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[sam] removing CMSIS 2.0 before introduction of 2.1
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Thibaut VIARD
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Here are the data structures with brief descriptions:<table>
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<tr><td class="indexkey"><a class="el" href="structarm__bilinear__interp__instance__f32.html">arm_bilinear_interp_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point bilinear interpolation function </td></tr>
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<tr><td class="indexkey"><a class="el" href="structarm__bilinear__interp__instance__q15.html">arm_bilinear_interp_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 bilinear interpolation function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__bilinear__interp__instance__q31.html">arm_bilinear_interp_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 bilinear interpolation function </td></tr>
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||||
<tr><td class="indexkey"><a class="el" href="structarm__bilinear__interp__instance__q7.html">arm_bilinear_interp_instance_q7</a></td><td class="indexvalue">Instance structure for the Q15 bilinear interpolation function </td></tr>
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<tr><td class="indexkey"><a class="el" href="structarm__biquad__cas__df1__32x64__ins__q31.html">arm_biquad_cas_df1_32x64_ins_q31</a></td><td class="indexvalue">Instance structure for the high precision Q31 Biquad cascade filter </td></tr>
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||||
<tr><td class="indexkey"><a class="el" href="structarm__biquad__cascade__df2_t__instance__f32.html">arm_biquad_cascade_df2T_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point transposed direct form II Biquad cascade filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__biquad__casd__df1__inst__f32.html">arm_biquad_casd_df1_inst_f32</a></td><td class="indexvalue">Instance structure for the floating-point Biquad cascade filter </td></tr>
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||||
<tr><td class="indexkey"><a class="el" href="structarm__biquad__casd__df1__inst__q15.html">arm_biquad_casd_df1_inst_q15</a></td><td class="indexvalue">Instance structure for the Q15 Biquad cascade filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__biquad__casd__df1__inst__q31.html">arm_biquad_casd_df1_inst_q31</a></td><td class="indexvalue">Instance structure for the Q31 Biquad cascade filter </td></tr>
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||||
<tr><td class="indexkey"><a class="el" href="structarm__cfft__radix4__instance__f32.html">arm_cfft_radix4_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point CFFT/CIFFT function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__cfft__radix4__instance__q15.html">arm_cfft_radix4_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 CFFT/CIFFT function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 CFFT/CIFFT function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__dct4__instance__f32.html">arm_dct4_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point DCT4/IDCT4 function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__dct4__instance__q15.html">arm_dct4_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 DCT4/IDCT4 function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__dct4__instance__q31.html">arm_dct4_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 DCT4/IDCT4 function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__decimate__instance__f32.html">arm_fir_decimate_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point FIR decimator </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__decimate__instance__q15.html">arm_fir_decimate_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 FIR decimator </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__decimate__instance__q31.html">arm_fir_decimate_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 FIR decimator </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__instance__f32.html">arm_fir_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__instance__q15.html">arm_fir_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__instance__q31.html">arm_fir_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__instance__q7.html">arm_fir_instance_q7</a></td><td class="indexvalue">Instance structure for the Q7 FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__interpolate__instance__f32.html">arm_fir_interpolate_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point FIR interpolator </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__interpolate__instance__q15.html">arm_fir_interpolate_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 FIR interpolator </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__interpolate__instance__q31.html">arm_fir_interpolate_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 FIR interpolator </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__lattice__instance__f32.html">arm_fir_lattice_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point FIR lattice filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__lattice__instance__q15.html">arm_fir_lattice_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 FIR lattice filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__lattice__instance__q31.html">arm_fir_lattice_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 FIR lattice filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__sparse__instance__f32.html">arm_fir_sparse_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point sparse FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__sparse__instance__q15.html">arm_fir_sparse_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 sparse FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__sparse__instance__q31.html">arm_fir_sparse_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 sparse FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__fir__sparse__instance__q7.html">arm_fir_sparse_instance_q7</a></td><td class="indexvalue">Instance structure for the Q7 sparse FIR filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__iir__lattice__instance__f32.html">arm_iir_lattice_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point IIR lattice filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__iir__lattice__instance__q15.html">arm_iir_lattice_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 IIR lattice filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__iir__lattice__instance__q31.html">arm_iir_lattice_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 IIR lattice filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__linear__interp__instance__f32.html">arm_linear_interp_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point Linear Interpolate function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__lms__instance__f32.html">arm_lms_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point LMS filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__lms__instance__q15.html">arm_lms_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 LMS filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__lms__instance__q31.html">arm_lms_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 LMS filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__lms__norm__instance__f32.html">arm_lms_norm_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point normalized LMS filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__lms__norm__instance__q15.html">arm_lms_norm_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 normalized LMS filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__lms__norm__instance__q31.html">arm_lms_norm_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 normalized LMS filter </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__matrix__instance__f32.html">arm_matrix_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point matrix structure </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__matrix__instance__q15.html">arm_matrix_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 matrix structure </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__matrix__instance__q31.html">arm_matrix_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 matrix structure </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__pid__instance__f32.html">arm_pid_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point PID Control </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__pid__instance__q15.html">arm_pid_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 PID Control </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__pid__instance__q31.html">arm_pid_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 PID Control </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__rfft__instance__f32.html">arm_rfft_instance_f32</a></td><td class="indexvalue">Instance structure for the floating-point RFFT/RIFFT function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__rfft__instance__q15.html">arm_rfft_instance_q15</a></td><td class="indexvalue">Instance structure for the Q15 RFFT/RIFFT function </td></tr>
|
||||
<tr><td class="indexkey"><a class="el" href="structarm__rfft__instance__q31.html">arm_rfft_instance_q31</a></td><td class="indexvalue">Instance structure for the Q31 RFFT/RIFFT function </td></tr>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_abs.html#ga421b6275f9d35f50286c0ff3beceff02">arm_abs_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<h1>arm_abs_f32.c</h1> </div>
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<div class="contents">
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||||
<a href="arm__abs__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_abs_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Vector absolute value. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* ---------------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031 <span class="preprocessor">#include <math.h></span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00063"></a><a class="code" href="group___basic_abs.html#ga421b6275f9d35f50286c0ff3beceff02">00063</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_abs.html#ga421b6275f9d35f50286c0ff3beceff02" title="Floating-point vector absolute value.">arm_abs_f32</a>(
|
||||
<a name="l00064"></a>00064 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc,
|
||||
<a name="l00065"></a>00065 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pDst,
|
||||
<a name="l00066"></a>00066 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00067"></a>00067 {
|
||||
<a name="l00068"></a>00068 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00069"></a>00069
|
||||
<a name="l00070"></a>00070 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00071"></a>00071 blkCnt = blockSize >> 2u;
|
||||
<a name="l00072"></a>00072
|
||||
<a name="l00073"></a>00073 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00074"></a>00074 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00075"></a>00075 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00076"></a>00076 {
|
||||
<a name="l00077"></a>00077 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00078"></a>00078 <span class="comment">/* Calculate absolute and then store the results in the destination buffer. */</span>
|
||||
<a name="l00079"></a>00079 *pDst++ = fabsf(*pSrc++);
|
||||
<a name="l00080"></a>00080 *pDst++ = fabsf(*pSrc++);
|
||||
<a name="l00081"></a>00081 *pDst++ = fabsf(*pSrc++);
|
||||
<a name="l00082"></a>00082 *pDst++ = fabsf(*pSrc++);
|
||||
<a name="l00083"></a>00083
|
||||
<a name="l00084"></a>00084 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00085"></a>00085 blkCnt--;
|
||||
<a name="l00086"></a>00086 }
|
||||
<a name="l00087"></a>00087
|
||||
<a name="l00088"></a>00088 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00089"></a>00089 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00090"></a>00090 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00091"></a>00091
|
||||
<a name="l00092"></a>00092 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00093"></a>00093 {
|
||||
<a name="l00094"></a>00094 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00095"></a>00095 <span class="comment">/* Calculate absolute and then store the results in the destination buffer. */</span>
|
||||
<a name="l00096"></a>00096 *pDst++ = fabsf(*pSrc++);
|
||||
<a name="l00097"></a>00097
|
||||
<a name="l00098"></a>00098 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00099"></a>00099 blkCnt--;
|
||||
<a name="l00100"></a>00100 }
|
||||
<a name="l00101"></a>00101 }
|
||||
<a name="l00102"></a>00102
|
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<h1>arm_abs_q15.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__abs__q15_8c_source.html">Go to the source code of this file.</a></p>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_abs.html#ga39f92964c9b649ba252e26ebe7b95594">arm_abs_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<h1>arm_abs_q15.c</h1> </div>
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<a href="arm__abs__q15_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_abs_q15.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q15 vector absolute value. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00054"></a><a class="code" href="group___basic_abs.html#ga39f92964c9b649ba252e26ebe7b95594">00054</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_abs.html#ga39f92964c9b649ba252e26ebe7b95594" title="Q15 vector absolute value.">arm_abs_q15</a>(
|
||||
<a name="l00055"></a>00055 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pSrc,
|
||||
<a name="l00056"></a>00056 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pDst,
|
||||
<a name="l00057"></a>00057 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00058"></a>00058 {
|
||||
<a name="l00059"></a>00059 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00060"></a>00060 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> in1; <span class="comment">/* Input value1 */</span>
|
||||
<a name="l00061"></a>00061 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> in2; <span class="comment">/* Input value2 */</span>
|
||||
<a name="l00062"></a>00062
|
||||
<a name="l00063"></a>00063
|
||||
<a name="l00064"></a>00064 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00065"></a>00065 blkCnt = blockSize >> 2u;
|
||||
<a name="l00066"></a>00066
|
||||
<a name="l00067"></a>00067 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00068"></a>00068 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00069"></a>00069 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00070"></a>00070 {
|
||||
<a name="l00071"></a>00071 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00072"></a>00072 <span class="comment">/* Read two inputs */</span>
|
||||
<a name="l00073"></a>00073 in1 = *pSrc++;
|
||||
<a name="l00074"></a>00074 in2 = *pSrc++;
|
||||
<a name="l00075"></a>00075 <span class="comment">/* Store the Absolute result in the destination buffer by packing the two values, in a single cycle */</span>
|
||||
<a name="l00076"></a>00076 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pDst)++ =
|
||||
<a name="l00077"></a>00077 __PKHBT(((in1 > 0) ? in1 : __SSAT(-in1, 16)),
|
||||
<a name="l00078"></a>00078 ((in2 > 0) ? in2 : __SSAT(-in2, 16)), 16);
|
||||
<a name="l00079"></a>00079
|
||||
<a name="l00080"></a>00080 in1 = *pSrc++;
|
||||
<a name="l00081"></a>00081 in2 = *pSrc++;
|
||||
<a name="l00082"></a>00082 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pDst)++ =
|
||||
<a name="l00083"></a>00083 __PKHBT(((in1 > 0) ? in1 : __SSAT(-in1, 16)),
|
||||
<a name="l00084"></a>00084 ((in2 > 0) ? in2 : __SSAT(-in2, 16)), 16);
|
||||
<a name="l00085"></a>00085
|
||||
<a name="l00086"></a>00086 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00087"></a>00087 blkCnt--;
|
||||
<a name="l00088"></a>00088 }
|
||||
<a name="l00089"></a>00089
|
||||
<a name="l00090"></a>00090 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00091"></a>00091 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00092"></a>00092 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00094"></a>00094 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00095"></a>00095 {
|
||||
<a name="l00096"></a>00096 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00097"></a>00097 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00098"></a>00098 in1 = *pSrc++;
|
||||
<a name="l00099"></a>00099
|
||||
<a name="l00100"></a>00100 <span class="comment">/* Calculate absolute value of input and then store the result in the destination buffer. */</span>
|
||||
<a name="l00101"></a>00101 *pDst++ = (in1 > 0) ? in1 : __SSAT(-in1, 16);
|
||||
<a name="l00102"></a>00102
|
||||
<a name="l00103"></a>00103 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00104"></a>00104 blkCnt--;
|
||||
<a name="l00105"></a>00105 }
|
||||
<a name="l00106"></a>00106 }
|
||||
<a name="l00107"></a>00107
|
||||
</pre></div></div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
|
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<p><a href="arm__abs__q31_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_abs.html#ga59eafcdcdb52da60d37f20aec6ff4577">arm_abs_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<h1>arm_abs_q31.c</h1> </div>
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<a href="arm__abs__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_abs_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q31 vector absolute value. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00055"></a><a class="code" href="group___basic_abs.html#ga59eafcdcdb52da60d37f20aec6ff4577">00055</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_abs.html#ga59eafcdcdb52da60d37f20aec6ff4577" title="Q31 vector absolute value.">arm_abs_q31</a>(
|
||||
<a name="l00056"></a>00056 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrc,
|
||||
<a name="l00057"></a>00057 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pDst,
|
||||
<a name="l00058"></a>00058 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00059"></a>00059 {
|
||||
<a name="l00060"></a>00060 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00061"></a>00061 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> in; <span class="comment">/* Input value */</span>
|
||||
<a name="l00062"></a>00062
|
||||
<a name="l00063"></a>00063 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00064"></a>00064 blkCnt = blockSize >> 2u;
|
||||
<a name="l00065"></a>00065
|
||||
<a name="l00066"></a>00066 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00067"></a>00067 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00068"></a>00068 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00069"></a>00069 {
|
||||
<a name="l00070"></a>00070 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00071"></a>00071 <span class="comment">/* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and then store the results in the destination buffer. */</span>
|
||||
<a name="l00072"></a>00072 in = *pSrc++;
|
||||
<a name="l00073"></a>00073 *pDst++ = (in > 0) ? in : ((in == 0x80000000) ? 0x7fffffff : -in);
|
||||
<a name="l00074"></a>00074 in = *pSrc++;
|
||||
<a name="l00075"></a>00075 *pDst++ = (in > 0) ? in : ((in == 0x80000000) ? 0x7fffffff : -in);
|
||||
<a name="l00076"></a>00076 in = *pSrc++;
|
||||
<a name="l00077"></a>00077 *pDst++ = (in > 0) ? in : ((in == 0x80000000) ? 0x7fffffff : -in);
|
||||
<a name="l00078"></a>00078 in = *pSrc++;
|
||||
<a name="l00079"></a>00079 *pDst++ = (in > 0) ? in : ((in == 0x80000000) ? 0x7fffffff : -in);
|
||||
<a name="l00080"></a>00080
|
||||
<a name="l00081"></a>00081 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00082"></a>00082 blkCnt--;
|
||||
<a name="l00083"></a>00083 }
|
||||
<a name="l00084"></a>00084
|
||||
<a name="l00085"></a>00085 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00086"></a>00086 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00087"></a>00087 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00088"></a>00088
|
||||
<a name="l00089"></a>00089 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00090"></a>00090 {
|
||||
<a name="l00091"></a>00091 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00092"></a>00092 <span class="comment">/* Calculate absolute value of the input (if -1 then saturated to 0x7fffffff) and then store the results in the destination buffer. */</span>
|
||||
<a name="l00093"></a>00093 in = *pSrc++;
|
||||
<a name="l00094"></a>00094 *pDst++ = (in > 0) ? in : ((in == 0x80000000) ? 0x7fffffff : -in);
|
||||
<a name="l00095"></a>00095
|
||||
<a name="l00096"></a>00096 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00097"></a>00097 blkCnt--;
|
||||
<a name="l00098"></a>00098 }
|
||||
<a name="l00099"></a>00099 }
|
||||
<a name="l00100"></a>00100
|
||||
</pre></div></div>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_abs.html#gadc30985e33fbf96802a5a7954dece3b1">arm_abs_q7</a> (<a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrc, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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|
||||
<div class="header">
|
||||
<div class="headertitle">
|
||||
<h1>arm_abs_q7.c</h1> </div>
|
||||
</div>
|
||||
<div class="contents">
|
||||
<a href="arm__abs__q7_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_abs_q7.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q7 vector absolute value. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00054"></a><a class="code" href="group___basic_abs.html#gadc30985e33fbf96802a5a7954dece3b1">00054</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_abs.html#gadc30985e33fbf96802a5a7954dece3b1" title="Q7 vector absolute value.">arm_abs_q7</a>(
|
||||
<a name="l00055"></a>00055 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pSrc,
|
||||
<a name="l00056"></a>00056 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pDst,
|
||||
<a name="l00057"></a>00057 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00058"></a>00058 {
|
||||
<a name="l00059"></a>00059 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00060"></a>00060 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> in1; <span class="comment">/* Input value1 */</span>
|
||||
<a name="l00061"></a>00061 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> in2; <span class="comment">/* Input value2 */</span>
|
||||
<a name="l00062"></a>00062 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> in3; <span class="comment">/* Input value3 */</span>
|
||||
<a name="l00063"></a>00063 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> in4; <span class="comment">/* Input value4 */</span>
|
||||
<a name="l00064"></a>00064
|
||||
<a name="l00065"></a>00065
|
||||
<a name="l00066"></a>00066 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00067"></a>00067 blkCnt = blockSize >> 2u;
|
||||
<a name="l00068"></a>00068
|
||||
<a name="l00069"></a>00069 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00070"></a>00070 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00071"></a>00071 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00072"></a>00072 {
|
||||
<a name="l00073"></a>00073 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00074"></a>00074 <span class="comment">/* Read 4 inputs */</span>
|
||||
<a name="l00075"></a>00075 in1 = *pSrc++;
|
||||
<a name="l00076"></a>00076 in2 = *pSrc++;
|
||||
<a name="l00077"></a>00077 in3 = *pSrc++;
|
||||
<a name="l00078"></a>00078 in4 = *pSrc++;
|
||||
<a name="l00079"></a>00079
|
||||
<a name="l00080"></a>00080 <span class="comment">/* Store the Absolute result in the destination buffer by packing the 4 values in single cycle */</span>
|
||||
<a name="l00081"></a>00081 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pDst)++ =
|
||||
<a name="l00082"></a>00082 <a class="code" href="arm__math_8h.html#a3ebff224ad44c217fde9f530342e2960" title="definition to pack four 8 bit values.">__PACKq7</a>(((in1 > 0) ? in1 : __SSAT(-in1, 8)),
|
||||
<a name="l00083"></a>00083 ((in2 > 0) ? in2 : __SSAT(-in2, 8)),
|
||||
<a name="l00084"></a>00084 ((in3 > 0) ? in3 : __SSAT(-in3, 8)),
|
||||
<a name="l00085"></a>00085 ((in4 > 0) ? in4 : __SSAT(-in4, 8)));
|
||||
<a name="l00086"></a>00086
|
||||
<a name="l00087"></a>00087 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00088"></a>00088 blkCnt--;
|
||||
<a name="l00089"></a>00089 }
|
||||
<a name="l00090"></a>00090
|
||||
<a name="l00091"></a>00091 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00092"></a>00092 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00093"></a>00093 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00094"></a>00094
|
||||
<a name="l00095"></a>00095 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00096"></a>00096 {
|
||||
<a name="l00097"></a>00097 <span class="comment">/* C = |A| */</span>
|
||||
<a name="l00098"></a>00098 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00099"></a>00099 in1 = *pSrc++;
|
||||
<a name="l00100"></a>00100
|
||||
<a name="l00101"></a>00101 <span class="comment">/* Store the Absolute result in the destination buffer */</span>
|
||||
<a name="l00102"></a>00102 *pDst++ = (in1 > 0) ? in1 : __SSAT(-in1, 8);
|
||||
<a name="l00103"></a>00103
|
||||
<a name="l00104"></a>00104 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00105"></a>00105 blkCnt--;
|
||||
<a name="l00106"></a>00106 }
|
||||
<a name="l00107"></a>00107 }
|
||||
<a name="l00108"></a>00108
|
||||
</pre></div></div>
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<h1>arm_add_f32.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__add__f32_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd">arm_add_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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|
||||
<h1>arm_add_f32.c</h1> </div>
|
||||
</div>
|
||||
<div class="contents">
|
||||
<a href="arm__add__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_add_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Floating-point vector addition. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* ---------------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00062"></a><a class="code" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd">00062</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd" title="Floating-point vector addition.">arm_add_f32</a>(
|
||||
<a name="l00063"></a>00063 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrcA,
|
||||
<a name="l00064"></a>00064 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrcB,
|
||||
<a name="l00065"></a>00065 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pDst,
|
||||
<a name="l00066"></a>00066 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00067"></a>00067 {
|
||||
<a name="l00068"></a>00068 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00069"></a>00069
|
||||
<a name="l00070"></a>00070 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00071"></a>00071 blkCnt = blockSize >> 2u;
|
||||
<a name="l00072"></a>00072
|
||||
<a name="l00073"></a>00073 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00074"></a>00074 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00075"></a>00075 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00076"></a>00076 {
|
||||
<a name="l00077"></a>00077 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00078"></a>00078 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00079"></a>00079 *pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
<a name="l00080"></a>00080 *pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
<a name="l00081"></a>00081 *pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
<a name="l00082"></a>00082 *pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
<a name="l00083"></a>00083
|
||||
<a name="l00084"></a>00084 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00085"></a>00085 blkCnt--;
|
||||
<a name="l00086"></a>00086 }
|
||||
<a name="l00087"></a>00087
|
||||
<a name="l00088"></a>00088 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00089"></a>00089 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00090"></a>00090 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00091"></a>00091
|
||||
<a name="l00092"></a>00092 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00093"></a>00093 {
|
||||
<a name="l00094"></a>00094 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00095"></a>00095 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00096"></a>00096 *pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
<a name="l00097"></a>00097
|
||||
<a name="l00098"></a>00098 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00099"></a>00099 blkCnt--;
|
||||
<a name="l00100"></a>00100 }
|
||||
<a name="l00101"></a>00101 }
|
||||
<a name="l00102"></a>00102
|
||||
</pre></div></div>
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<h1>arm_add_q15.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__add__q15_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_add.html#gabb51285a41f511670bbff62fc0e1bf62">arm_add_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<a href="arm__add__q15_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
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<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
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<a name="l00003"></a>00003 <span class="comment">* </span>
|
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<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
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<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
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<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
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<a name="l00008"></a>00008 <span class="comment">* Title: arm_add_q15.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q15 vector addition </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00055"></a><a class="code" href="group___basic_add.html#gabb51285a41f511670bbff62fc0e1bf62">00055</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_add.html#gabb51285a41f511670bbff62fc0e1bf62" title="Q15 vector addition.">arm_add_q15</a>(
|
||||
<a name="l00056"></a>00056 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pSrcA,
|
||||
<a name="l00057"></a>00057 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pSrcB,
|
||||
<a name="l00058"></a>00058 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pDst,
|
||||
<a name="l00059"></a>00059 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00060"></a>00060 {
|
||||
<a name="l00061"></a>00061 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00062"></a>00062
|
||||
<a name="l00063"></a>00063
|
||||
<a name="l00064"></a>00064 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00065"></a>00065 blkCnt = blockSize >> 2u;
|
||||
<a name="l00066"></a>00066
|
||||
<a name="l00067"></a>00067 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00068"></a>00068 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00069"></a>00069 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00070"></a>00070 {
|
||||
<a name="l00071"></a>00071 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00072"></a>00072 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00073"></a>00073 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pDst)++ = __QADD16(*<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pSrcA)++, *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pSrcB)++);
|
||||
<a name="l00074"></a>00074 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pDst)++ = __QADD16(*<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pSrcA)++, *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pSrcB)++);
|
||||
<a name="l00075"></a>00075
|
||||
<a name="l00076"></a>00076 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00077"></a>00077 blkCnt--;
|
||||
<a name="l00078"></a>00078 }
|
||||
<a name="l00079"></a>00079
|
||||
<a name="l00080"></a>00080 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00081"></a>00081 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00082"></a>00082 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00083"></a>00083
|
||||
<a name="l00084"></a>00084 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00085"></a>00085 {
|
||||
<a name="l00086"></a>00086 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00087"></a>00087 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00088"></a>00088 *pDst++ = (<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>) __QADD16(*pSrcA++, *pSrcB++);
|
||||
<a name="l00089"></a>00089
|
||||
<a name="l00090"></a>00090 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00091"></a>00091 blkCnt--;
|
||||
<a name="l00092"></a>00092 }
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00094"></a>00094 }
|
||||
<a name="l00095"></a>00095
|
||||
</pre></div></div>
|
||||
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<h1>arm_add_q31.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__add__q31_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_add.html#ga24d6c3f7f8b9fae4847c0c3f26a39a3b">arm_add_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<a href="arm__add__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_add_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q31 vector addition. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00056"></a><a class="code" href="group___basic_add.html#ga24d6c3f7f8b9fae4847c0c3f26a39a3b">00056</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_add.html#ga24d6c3f7f8b9fae4847c0c3f26a39a3b" title="Q31 vector addition.">arm_add_q31</a>(
|
||||
<a name="l00057"></a>00057 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrcA,
|
||||
<a name="l00058"></a>00058 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrcB,
|
||||
<a name="l00059"></a>00059 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pDst,
|
||||
<a name="l00060"></a>00060 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00061"></a>00061 {
|
||||
<a name="l00062"></a>00062 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00063"></a>00063
|
||||
<a name="l00064"></a>00064
|
||||
<a name="l00065"></a>00065 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00066"></a>00066 blkCnt = blockSize >> 2u;
|
||||
<a name="l00067"></a>00067
|
||||
<a name="l00068"></a>00068 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00069"></a>00069 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00070"></a>00070 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00071"></a>00071 {
|
||||
<a name="l00072"></a>00072 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00073"></a>00073 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00074"></a>00074 *pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
<a name="l00075"></a>00075 *pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
<a name="l00076"></a>00076 *pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
<a name="l00077"></a>00077 *pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
<a name="l00078"></a>00078
|
||||
<a name="l00079"></a>00079 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00080"></a>00080 blkCnt--;
|
||||
<a name="l00081"></a>00081 }
|
||||
<a name="l00082"></a>00082
|
||||
<a name="l00083"></a>00083 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00084"></a>00084 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00085"></a>00085 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00086"></a>00086
|
||||
<a name="l00087"></a>00087 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00088"></a>00088 {
|
||||
<a name="l00089"></a>00089 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00090"></a>00090 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00091"></a>00091 *pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
<a name="l00092"></a>00092
|
||||
<a name="l00093"></a>00093 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00094"></a>00094 blkCnt--;
|
||||
<a name="l00095"></a>00095 }
|
||||
<a name="l00096"></a>00096 }
|
||||
<a name="l00097"></a>00097
|
||||
</pre></div></div>
|
||||
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<h1>arm_add_q7.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__add__q7_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_add.html#gaed633f415a7840a66861debca2dfb96b">arm_add_q7</a> (<a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<a href="arm__add__q7_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_add_q7.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q7 vector addition. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00055"></a><a class="code" href="group___basic_add.html#gaed633f415a7840a66861debca2dfb96b">00055</a> <span class="keywordtype">void</span> <a class="code" href="group___basic_add.html#gaed633f415a7840a66861debca2dfb96b" title="Q7 vector addition.">arm_add_q7</a>(
|
||||
<a name="l00056"></a>00056 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pSrcA,
|
||||
<a name="l00057"></a>00057 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pSrcB,
|
||||
<a name="l00058"></a>00058 <a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a> * pDst,
|
||||
<a name="l00059"></a>00059 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00060"></a>00060 {
|
||||
<a name="l00061"></a>00061 uint32_t blkCnt; <span class="comment">/* loop counter */</span>
|
||||
<a name="l00062"></a>00062
|
||||
<a name="l00063"></a>00063
|
||||
<a name="l00064"></a>00064 <span class="comment">/*loop Unrolling */</span>
|
||||
<a name="l00065"></a>00065 blkCnt = blockSize >> 2u;
|
||||
<a name="l00066"></a>00066
|
||||
<a name="l00067"></a>00067 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00068"></a>00068 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00069"></a>00069 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00070"></a>00070 {
|
||||
<a name="l00071"></a>00071 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00072"></a>00072 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00073"></a>00073 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pDst)++ = __QADD8(*<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pSrcA)++, *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pSrcB)++);
|
||||
<a name="l00074"></a>00074
|
||||
<a name="l00075"></a>00075 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00076"></a>00076 blkCnt--;
|
||||
<a name="l00077"></a>00077 }
|
||||
<a name="l00078"></a>00078
|
||||
<a name="l00079"></a>00079 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00080"></a>00080 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00081"></a>00081 blkCnt = blockSize % 0x4u;
|
||||
<a name="l00082"></a>00082
|
||||
<a name="l00083"></a>00083 <span class="keywordflow">while</span>(blkCnt > 0u)
|
||||
<a name="l00084"></a>00084 {
|
||||
<a name="l00085"></a>00085 <span class="comment">/* C = A + B */</span>
|
||||
<a name="l00086"></a>00086 <span class="comment">/* Add and then store the results in the destination buffer. */</span>
|
||||
<a name="l00087"></a>00087 *pDst++ = (<a class="code" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263" title="8-bit fractional data type in 1.7 format.">q7_t</a>) __SSAT(*pSrcA++ + *pSrcB++, 8);
|
||||
<a name="l00088"></a>00088
|
||||
<a name="l00089"></a>00089 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00090"></a>00090 blkCnt--;
|
||||
<a name="l00091"></a>00091 }
|
||||
<a name="l00092"></a>00092
|
||||
<a name="l00093"></a>00093 }
|
||||
<a name="l00094"></a>00094
|
||||
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<h1>arm_biquad_cascade_df1_32x64_init_q31.c File Reference</h1> </div>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1__32x64.html#ga44900cecb8083afcaabf905ffcd656bb">arm_biquad_cas_df1_32x64_init_q31</a> (<a class="el" href="structarm__biquad__cas__df1__32x64__ins__q31.html">arm_biquad_cas_df1_32x64_ins_q31</a> *S, uint8_t numStages, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoeffs, <a class="el" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6">q63_t</a> *pState, uint8_t postShift)</td></tr>
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||||
<a href="arm__biquad__cascade__df1__32x64__init__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_32x64_init_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: High precision Q31 Biquad cascade filter initialization function. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00074"></a><a class="code" href="group___biquad_cascade_d_f1__32x64.html#ga44900cecb8083afcaabf905ffcd656bb">00074</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1__32x64.html#ga44900cecb8083afcaabf905ffcd656bb">arm_biquad_cas_df1_32x64_init_q31</a>(
|
||||
<a name="l00075"></a>00075 <a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html" title="Instance structure for the high precision Q31 Biquad cascade filter.">arm_biquad_cas_df1_32x64_ins_q31</a> * S,
|
||||
<a name="l00076"></a>00076 uint8_t numStages,
|
||||
<a name="l00077"></a>00077 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pCoeffs,
|
||||
<a name="l00078"></a>00078 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> * pState,
|
||||
<a name="l00079"></a>00079 uint8_t postShift)
|
||||
<a name="l00080"></a>00080 {
|
||||
<a name="l00081"></a>00081 <span class="comment">/* Assign filter stages */</span>
|
||||
<a name="l00082"></a>00082 S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#ad7cb9a9f5df8f4fcfc7a0b633672e574">numStages</a> = numStages;
|
||||
<a name="l00083"></a>00083
|
||||
<a name="l00084"></a>00084 <span class="comment">/* Assign postShift to be applied to the output */</span>
|
||||
<a name="l00085"></a>00085 S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#a8e9d58e8dba5aa3b2fc4f36d2ed07996">postShift</a> = postShift;
|
||||
<a name="l00086"></a>00086
|
||||
<a name="l00087"></a>00087 <span class="comment">/* Assign coefficient pointer */</span>
|
||||
<a name="l00088"></a>00088 S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#a490462d6ebe0fecfb6acbf51bed22ecf">pCoeffs</a> = pCoeffs;
|
||||
<a name="l00089"></a>00089
|
||||
<a name="l00090"></a>00090 <span class="comment">/* Clear state buffer and size is always 4 * numStages */</span>
|
||||
<a name="l00091"></a>00091 memset(pState, 0, (4u * (uint32_t) numStages) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>));
|
||||
<a name="l00092"></a>00092
|
||||
<a name="l00093"></a>00093 <span class="comment">/* Assign state pointer */</span>
|
||||
<a name="l00094"></a>00094 S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#a4c899cdfaf2bb955323e93637bd662e0">pState</a> = pState;
|
||||
<a name="l00095"></a>00095 }
|
||||
<a name="l00096"></a>00096
|
||||
</pre></div></div>
|
||||
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1__32x64.html#ga953a83e69685de6575cff37feb358a93">arm_biquad_cas_df1_32x64_q31</a> (const <a class="el" href="structarm__biquad__cas__df1__32x64__ins__q31.html">arm_biquad_cas_df1_32x64_ins_q31</a> *S, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<a href="arm__biquad__cascade__df1__32x64__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_32x64_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: High precision Q31 Biquad cascade filter processing function </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00029"></a>00029
|
||||
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00173"></a><a class="code" href="group___biquad_cascade_d_f1__32x64.html#ga953a83e69685de6575cff37feb358a93">00173</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1__32x64.html#ga953a83e69685de6575cff37feb358a93">arm_biquad_cas_df1_32x64_q31</a>(
|
||||
<a name="l00174"></a>00174 <span class="keyword">const</span> <a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html" title="Instance structure for the high precision Q31 Biquad cascade filter.">arm_biquad_cas_df1_32x64_ins_q31</a> * S,
|
||||
<a name="l00175"></a>00175 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrc,
|
||||
<a name="l00176"></a>00176 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pDst,
|
||||
<a name="l00177"></a>00177 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00178"></a>00178 {
|
||||
<a name="l00179"></a>00179 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pIn = pSrc; <span class="comment">/* input pointer initialization */</span>
|
||||
<a name="l00180"></a>00180 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pOut = pDst; <span class="comment">/* output pointer initialization */</span>
|
||||
<a name="l00181"></a>00181 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> *pState = S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#a4c899cdfaf2bb955323e93637bd662e0">pState</a>; <span class="comment">/* state pointer initialization */</span>
|
||||
<a name="l00182"></a>00182 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#a490462d6ebe0fecfb6acbf51bed22ecf">pCoeffs</a>; <span class="comment">/* coeff pointer initialization */</span>
|
||||
<a name="l00183"></a>00183 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> acc; <span class="comment">/* accumulator */</span>
|
||||
<a name="l00184"></a>00184 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> Xn1, Xn2, Yn1, Yn2; <span class="comment">/* Filter state variables */</span>
|
||||
<a name="l00185"></a>00185 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> b0, b1, b2, a1, a2; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00186"></a>00186 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> Xn; <span class="comment">/* temporary input */</span>
|
||||
<a name="l00187"></a>00187 int32_t shift = (int32_t) S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#a8e9d58e8dba5aa3b2fc4f36d2ed07996">postShift</a> + 1; <span class="comment">/* Shift to be applied to the output */</span>
|
||||
<a name="l00188"></a>00188 uint32_t sample, stage = S-><a class="code" href="structarm__biquad__cas__df1__32x64__ins__q31.html#ad7cb9a9f5df8f4fcfc7a0b633672e574">numStages</a>; <span class="comment">/* loop counters */</span>
|
||||
<a name="l00189"></a>00189
|
||||
<a name="l00190"></a>00190
|
||||
<a name="l00191"></a>00191 <span class="keywordflow">do</span>
|
||||
<a name="l00192"></a>00192 {
|
||||
<a name="l00193"></a>00193 <span class="comment">/* Reading the coefficients */</span>
|
||||
<a name="l00194"></a>00194 b0 = *pCoeffs++;
|
||||
<a name="l00195"></a>00195 b1 = *pCoeffs++;
|
||||
<a name="l00196"></a>00196 b2 = *pCoeffs++;
|
||||
<a name="l00197"></a>00197 a1 = *pCoeffs++;
|
||||
<a name="l00198"></a>00198 a2 = *pCoeffs++;
|
||||
<a name="l00199"></a>00199
|
||||
<a name="l00200"></a>00200 <span class="comment">/* Reading the state values */</span>
|
||||
<a name="l00201"></a>00201 Xn1 = pState[0];
|
||||
<a name="l00202"></a>00202 Xn2 = pState[1];
|
||||
<a name="l00203"></a>00203 Yn1 = pState[2];
|
||||
<a name="l00204"></a>00204 Yn2 = pState[3];
|
||||
<a name="l00205"></a>00205
|
||||
<a name="l00206"></a>00206 <span class="comment">/* Apply loop unrolling and compute 4 output values simultaneously. */</span>
|
||||
<a name="l00207"></a>00207 <span class="comment">/* The variable acc hold output value that is being computed and </span>
|
||||
<a name="l00208"></a>00208 <span class="comment"> * stored in the destination buffer </span>
|
||||
<a name="l00209"></a>00209 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00210"></a>00210 <span class="comment"> */</span>
|
||||
<a name="l00211"></a>00211
|
||||
<a name="l00212"></a>00212 sample = blockSize >> 2u;
|
||||
<a name="l00213"></a>00213
|
||||
<a name="l00214"></a>00214 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00215"></a>00215 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00216"></a>00216 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00217"></a>00217 {
|
||||
<a name="l00218"></a>00218 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00219"></a>00219 Xn = *pIn++;
|
||||
<a name="l00220"></a>00220
|
||||
<a name="l00221"></a>00221 <span class="comment">/* The value is shifted to the MSB to perform 32x64 multiplication */</span>
|
||||
<a name="l00222"></a>00222 Xn = Xn << 32;
|
||||
<a name="l00223"></a>00223
|
||||
<a name="l00224"></a>00224 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00225"></a>00225
|
||||
<a name="l00226"></a>00226 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00227"></a>00227 acc = <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn, b0);
|
||||
<a name="l00228"></a>00228 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00229"></a>00229 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn1, b1);
|
||||
<a name="l00230"></a>00230 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00231"></a>00231 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn2, b2);
|
||||
<a name="l00232"></a>00232 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00233"></a>00233 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn1, a1);
|
||||
<a name="l00234"></a>00234 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00235"></a>00235 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn2, a2);
|
||||
<a name="l00236"></a>00236
|
||||
<a name="l00237"></a>00237 <span class="comment">/* The result is converted to 1.63 , Yn2 variable is reused */</span>
|
||||
<a name="l00238"></a>00238 Yn2 = acc << shift;
|
||||
<a name="l00239"></a>00239
|
||||
<a name="l00240"></a>00240 <span class="comment">/* Store the output in the destination buffer in 1.31 format. */</span>
|
||||
<a name="l00241"></a>00241 *pOut++ = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> (32 - shift));
|
||||
<a name="l00242"></a>00242
|
||||
<a name="l00243"></a>00243 <span class="comment">/* Read the second input into Xn2, to reuse the value */</span>
|
||||
<a name="l00244"></a>00244 Xn2 = *pIn++;
|
||||
<a name="l00245"></a>00245
|
||||
<a name="l00246"></a>00246 <span class="comment">/* The value is shifted to the MSB to perform 32x64 multiplication */</span>
|
||||
<a name="l00247"></a>00247 Xn2 = Xn2 << 32;
|
||||
<a name="l00248"></a>00248
|
||||
<a name="l00249"></a>00249 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00250"></a>00250
|
||||
<a name="l00251"></a>00251 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00252"></a>00252 acc = <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn2, b0);
|
||||
<a name="l00253"></a>00253 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00254"></a>00254 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn, b1);
|
||||
<a name="l00255"></a>00255 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00256"></a>00256 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn1, b2);
|
||||
<a name="l00257"></a>00257 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00258"></a>00258 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn2, a1);
|
||||
<a name="l00259"></a>00259 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00260"></a>00260 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn1, a2);
|
||||
<a name="l00261"></a>00261
|
||||
<a name="l00262"></a>00262 <span class="comment">/* The result is converted to 1.63, Yn1 variable is reused */</span>
|
||||
<a name="l00263"></a>00263 Yn1 = acc << shift;
|
||||
<a name="l00264"></a>00264
|
||||
<a name="l00265"></a>00265 <span class="comment">/* The result is converted to 1.31 */</span>
|
||||
<a name="l00266"></a>00266 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00267"></a>00267 *pOut++ = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> (32 - shift));
|
||||
<a name="l00268"></a>00268
|
||||
<a name="l00269"></a>00269 <span class="comment">/* Read the third input into Xn1, to reuse the value */</span>
|
||||
<a name="l00270"></a>00270 Xn1 = *pIn++;
|
||||
<a name="l00271"></a>00271
|
||||
<a name="l00272"></a>00272 <span class="comment">/* The value is shifted to the MSB to perform 32x64 multiplication */</span>
|
||||
<a name="l00273"></a>00273 Xn1 = Xn1 << 32;
|
||||
<a name="l00274"></a>00274
|
||||
<a name="l00275"></a>00275 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00276"></a>00276 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00277"></a>00277 acc = <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn1, b0);
|
||||
<a name="l00278"></a>00278 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00279"></a>00279 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn2, b1);
|
||||
<a name="l00280"></a>00280 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00281"></a>00281 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn, b2);
|
||||
<a name="l00282"></a>00282 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00283"></a>00283 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn1, a1);
|
||||
<a name="l00284"></a>00284 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00285"></a>00285 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn2, a2);
|
||||
<a name="l00286"></a>00286
|
||||
<a name="l00287"></a>00287 <span class="comment">/* The result is converted to 1.63, Yn2 variable is reused */</span>
|
||||
<a name="l00288"></a>00288 Yn2 = acc << shift;
|
||||
<a name="l00289"></a>00289
|
||||
<a name="l00290"></a>00290 <span class="comment">/* Store the output in the destination buffer in 1.31 format. */</span>
|
||||
<a name="l00291"></a>00291 *pOut++ = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> (32 - shift));
|
||||
<a name="l00292"></a>00292
|
||||
<a name="l00293"></a>00293 <span class="comment">/* Read the fourth input into Xn, to reuse the value */</span>
|
||||
<a name="l00294"></a>00294 Xn = *pIn++;
|
||||
<a name="l00295"></a>00295
|
||||
<a name="l00296"></a>00296 <span class="comment">/* The value is shifted to the MSB to perform 32x64 multiplication */</span>
|
||||
<a name="l00297"></a>00297 Xn = Xn << 32;
|
||||
<a name="l00298"></a>00298
|
||||
<a name="l00299"></a>00299 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00300"></a>00300 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00301"></a>00301 acc = <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn, b0);
|
||||
<a name="l00302"></a>00302 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00303"></a>00303 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn1, b1);
|
||||
<a name="l00304"></a>00304 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00305"></a>00305 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn2, b2);
|
||||
<a name="l00306"></a>00306 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00307"></a>00307 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn2, a1);
|
||||
<a name="l00308"></a>00308 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00309"></a>00309 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn1, a2);
|
||||
<a name="l00310"></a>00310
|
||||
<a name="l00311"></a>00311 <span class="comment">/* The result is converted to 1.63, Yn1 variable is reused */</span>
|
||||
<a name="l00312"></a>00312 Yn1 = acc << shift;
|
||||
<a name="l00313"></a>00313
|
||||
<a name="l00314"></a>00314 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00315"></a>00315 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00316"></a>00316 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00317"></a>00317 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00318"></a>00318 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00319"></a>00319 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00320"></a>00320 Xn2 = Xn1;
|
||||
<a name="l00321"></a>00321 Xn1 = Xn;
|
||||
<a name="l00322"></a>00322
|
||||
<a name="l00323"></a>00323 <span class="comment">/* Store the output in the destination buffer in 1.31 format. */</span>
|
||||
<a name="l00324"></a>00324 *pOut++ = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> (32 - shift));
|
||||
<a name="l00325"></a>00325
|
||||
<a name="l00326"></a>00326 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00327"></a>00327 sample--;
|
||||
<a name="l00328"></a>00328 }
|
||||
<a name="l00329"></a>00329
|
||||
<a name="l00330"></a>00330 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00331"></a>00331 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00332"></a>00332 sample = (blockSize & 0x3u);
|
||||
<a name="l00333"></a>00333
|
||||
<a name="l00334"></a>00334 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00335"></a>00335 {
|
||||
<a name="l00336"></a>00336 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00337"></a>00337 Xn = *pIn++;
|
||||
<a name="l00338"></a>00338
|
||||
<a name="l00339"></a>00339 <span class="comment">/* The value is shifted to the MSB to perform 32x64 multiplication */</span>
|
||||
<a name="l00340"></a>00340 Xn = Xn << 32;
|
||||
<a name="l00341"></a>00341
|
||||
<a name="l00342"></a>00342 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00343"></a>00343 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00344"></a>00344 acc = <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn, b0);
|
||||
<a name="l00345"></a>00345 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00346"></a>00346 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn1, b1);
|
||||
<a name="l00347"></a>00347 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00348"></a>00348 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Xn2, b2);
|
||||
<a name="l00349"></a>00349 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00350"></a>00350 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn1, a1);
|
||||
<a name="l00351"></a>00351 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00352"></a>00352 acc += <a class="code" href="arm__math_8h.html#a642a29d71f7951a7f6c0b797c300b711" title="Multiplies 32 X 64 and returns 32 bit result in 2.30 format.">mult32x64</a>(Yn2, a2);
|
||||
<a name="l00353"></a>00353
|
||||
<a name="l00354"></a>00354 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00355"></a>00355 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00356"></a>00356 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00357"></a>00357 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00358"></a>00358 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00359"></a>00359 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00360"></a>00360 Xn2 = Xn1;
|
||||
<a name="l00361"></a>00361 Xn1 = Xn;
|
||||
<a name="l00362"></a>00362 Yn2 = Yn1;
|
||||
<a name="l00363"></a>00363 Yn1 = acc << shift;
|
||||
<a name="l00364"></a>00364
|
||||
<a name="l00365"></a>00365 <span class="comment">/* Store the output in the destination buffer in 1.31 format. */</span>
|
||||
<a name="l00366"></a>00366 *pOut++ = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> (32 - shift));
|
||||
<a name="l00367"></a>00367
|
||||
<a name="l00368"></a>00368 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00369"></a>00369 sample--;
|
||||
<a name="l00370"></a>00370 }
|
||||
<a name="l00371"></a>00371
|
||||
<a name="l00372"></a>00372 <span class="comment">/* The first stage output is given as input to the second stage. */</span>
|
||||
<a name="l00373"></a>00373 pIn = pDst;
|
||||
<a name="l00374"></a>00374
|
||||
<a name="l00375"></a>00375 <span class="comment">/* Reset to destination buffer working pointer */</span>
|
||||
<a name="l00376"></a>00376 pOut = pDst;
|
||||
<a name="l00377"></a>00377
|
||||
<a name="l00378"></a>00378 <span class="comment">/* Store the updated state variables back into the pState array */</span>
|
||||
<a name="l00379"></a>00379 *pState++ = Xn1;
|
||||
<a name="l00380"></a>00380 *pState++ = Xn2;
|
||||
<a name="l00381"></a>00381 *pState++ = Yn1;
|
||||
<a name="l00382"></a>00382 *pState++ = Yn2;
|
||||
<a name="l00383"></a>00383
|
||||
<a name="l00384"></a>00384 } <span class="keywordflow">while</span>(--stage);
|
||||
<a name="l00385"></a>00385 }
|
||||
<a name="l00386"></a>00386
|
||||
</pre></div></div>
|
||||
</div>
|
||||
<!--- window showing the filter options -->
|
||||
<div id="MSearchSelectWindow"
|
||||
onmouseover="return searchBox.OnSearchSelectShow()"
|
||||
onmouseout="return searchBox.OnSearchSelectHide()"
|
||||
onkeydown="return searchBox.OnSearchSelectKey(event)">
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#gaa0dbe330d763e3c1d8030b3ef12d5bdc">arm_biquad_cascade_df1_f32</a> (const <a class="el" href="structarm__biquad__casd__df1__inst__f32.html">arm_biquad_casd_df1_inst_f32</a> *S, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<a href="arm__biquad__cascade__df1__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Processing function for the </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* floating-point Biquad cascade DirectFormI(DF1) filter. </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* Initial version </span>
|
||||
<a name="l00032"></a>00032 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00033"></a>00033
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00167"></a><a class="code" href="group___biquad_cascade_d_f1.html#gaa0dbe330d763e3c1d8030b3ef12d5bdc">00167</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#gaa0dbe330d763e3c1d8030b3ef12d5bdc" title="Processing function for the floating-point Biquad cascade filter.">arm_biquad_cascade_df1_f32</a>(
|
||||
<a name="l00168"></a>00168 <span class="keyword">const</span> <a class="code" href="structarm__biquad__casd__df1__inst__f32.html" title="Instance structure for the floating-point Biquad cascade filter.">arm_biquad_casd_df1_inst_f32</a> * S,
|
||||
<a name="l00169"></a>00169 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc,
|
||||
<a name="l00170"></a>00170 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pDst,
|
||||
<a name="l00171"></a>00171 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00172"></a>00172 {
|
||||
<a name="l00173"></a>00173 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pIn = pSrc; <span class="comment">/* source pointer */</span>
|
||||
<a name="l00174"></a>00174 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pOut = pDst; <span class="comment">/* destination pointer */</span>
|
||||
<a name="l00175"></a>00175 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pState = S-><a class="code" href="structarm__biquad__casd__df1__inst__f32.html#a8c245d79e0d8cfabc82409d4b54fb682">pState</a>; <span class="comment">/* pState pointer */</span>
|
||||
<a name="l00176"></a>00176 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__casd__df1__inst__f32.html#af9df3820576fb921809d1462c9c6d16c">pCoeffs</a>; <span class="comment">/* coefficient pointer */</span>
|
||||
<a name="l00177"></a>00177 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> acc; <span class="comment">/* Simulates the accumulator */</span>
|
||||
<a name="l00178"></a>00178 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> b0, b1, b2, a1, a2; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00179"></a>00179 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> Xn1, Xn2, Yn1, Yn2; <span class="comment">/* Filter pState variables */</span>
|
||||
<a name="l00180"></a>00180 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> Xn; <span class="comment">/* temporary input */</span>
|
||||
<a name="l00181"></a>00181 uint32_t sample, stage = S-><a class="code" href="structarm__biquad__casd__df1__inst__f32.html#af69820c37a87252c46453e4cfe120585">numStages</a>; <span class="comment">/* loop counters */</span>
|
||||
<a name="l00182"></a>00182
|
||||
<a name="l00183"></a>00183
|
||||
<a name="l00184"></a>00184 <span class="keywordflow">do</span>
|
||||
<a name="l00185"></a>00185 {
|
||||
<a name="l00186"></a>00186 <span class="comment">/* Reading the coefficients */</span>
|
||||
<a name="l00187"></a>00187 b0 = *pCoeffs++;
|
||||
<a name="l00188"></a>00188 b1 = *pCoeffs++;
|
||||
<a name="l00189"></a>00189 b2 = *pCoeffs++;
|
||||
<a name="l00190"></a>00190 a1 = *pCoeffs++;
|
||||
<a name="l00191"></a>00191 a2 = *pCoeffs++;
|
||||
<a name="l00192"></a>00192
|
||||
<a name="l00193"></a>00193 <span class="comment">/* Reading the pState values */</span>
|
||||
<a name="l00194"></a>00194 Xn1 = pState[0];
|
||||
<a name="l00195"></a>00195 Xn2 = pState[1];
|
||||
<a name="l00196"></a>00196 Yn1 = pState[2];
|
||||
<a name="l00197"></a>00197 Yn2 = pState[3];
|
||||
<a name="l00198"></a>00198
|
||||
<a name="l00199"></a>00199 <span class="comment">/* Apply loop unrolling and compute 4 output values simultaneously. */</span>
|
||||
<a name="l00200"></a>00200 <span class="comment">/* The variable acc hold output values that are being computed: </span>
|
||||
<a name="l00201"></a>00201 <span class="comment"> * </span>
|
||||
<a name="l00202"></a>00202 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00203"></a>00203 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00204"></a>00204 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00205"></a>00205 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00206"></a>00206 <span class="comment"> */</span>
|
||||
<a name="l00207"></a>00207
|
||||
<a name="l00208"></a>00208 sample = blockSize >> 2u;
|
||||
<a name="l00209"></a>00209
|
||||
<a name="l00210"></a>00210 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00211"></a>00211 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00212"></a>00212 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00213"></a>00213 {
|
||||
<a name="l00214"></a>00214 <span class="comment">/* Read the first input */</span>
|
||||
<a name="l00215"></a>00215 Xn = *pIn++;
|
||||
<a name="l00216"></a>00216
|
||||
<a name="l00217"></a>00217 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00218"></a>00218 Yn2 = (b0 * Xn) + (b1 * Xn1) + (b2 * Xn2) + (a1 * Yn1) + (a2 * Yn2);
|
||||
<a name="l00219"></a>00219
|
||||
<a name="l00220"></a>00220 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00221"></a>00221 *pOut++ = Yn2;
|
||||
<a name="l00222"></a>00222
|
||||
<a name="l00223"></a>00223 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00224"></a>00224 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00225"></a>00225 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00226"></a>00226 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00227"></a>00227 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00228"></a>00228 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00229"></a>00229
|
||||
<a name="l00230"></a>00230 <span class="comment">/* Read the second input */</span>
|
||||
<a name="l00231"></a>00231 Xn2 = *pIn++;
|
||||
<a name="l00232"></a>00232
|
||||
<a name="l00233"></a>00233 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00234"></a>00234 Yn1 = (b0 * Xn2) + (b1 * Xn) + (b2 * Xn1) + (a1 * Yn2) + (a2 * Yn1);
|
||||
<a name="l00235"></a>00235
|
||||
<a name="l00236"></a>00236 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00237"></a>00237 *pOut++ = Yn1;
|
||||
<a name="l00238"></a>00238
|
||||
<a name="l00239"></a>00239 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00240"></a>00240 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00241"></a>00241 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00242"></a>00242 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00243"></a>00243 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00244"></a>00244 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00245"></a>00245
|
||||
<a name="l00246"></a>00246 <span class="comment">/* Read the third input */</span>
|
||||
<a name="l00247"></a>00247 Xn1 = *pIn++;
|
||||
<a name="l00248"></a>00248
|
||||
<a name="l00249"></a>00249 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00250"></a>00250 Yn2 = (b0 * Xn1) + (b1 * Xn2) + (b2 * Xn) + (a1 * Yn1) + (a2 * Yn2);
|
||||
<a name="l00251"></a>00251
|
||||
<a name="l00252"></a>00252 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00253"></a>00253 *pOut++ = Yn2;
|
||||
<a name="l00254"></a>00254
|
||||
<a name="l00255"></a>00255 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00256"></a>00256 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00257"></a>00257 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00258"></a>00258 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00259"></a>00259 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00260"></a>00260 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00261"></a>00261
|
||||
<a name="l00262"></a>00262 <span class="comment">/* Read the forth input */</span>
|
||||
<a name="l00263"></a>00263 Xn = *pIn++;
|
||||
<a name="l00264"></a>00264
|
||||
<a name="l00265"></a>00265 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00266"></a>00266 Yn1 = (b0 * Xn) + (b1 * Xn1) + (b2 * Xn2) + (a1 * Yn2) + (a2 * Yn1);
|
||||
<a name="l00267"></a>00267
|
||||
<a name="l00268"></a>00268 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00269"></a>00269 *pOut++ = Yn1;
|
||||
<a name="l00270"></a>00270
|
||||
<a name="l00271"></a>00271 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00272"></a>00272 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00273"></a>00273 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00274"></a>00274 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00275"></a>00275 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00276"></a>00276 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00277"></a>00277 Xn2 = Xn1;
|
||||
<a name="l00278"></a>00278 Xn1 = Xn;
|
||||
<a name="l00279"></a>00279
|
||||
<a name="l00280"></a>00280 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00281"></a>00281 sample--;
|
||||
<a name="l00282"></a>00282
|
||||
<a name="l00283"></a>00283 }
|
||||
<a name="l00284"></a>00284
|
||||
<a name="l00285"></a>00285 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00286"></a>00286 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00287"></a>00287 sample = blockSize & 0x3u;
|
||||
<a name="l00288"></a>00288
|
||||
<a name="l00289"></a>00289 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00290"></a>00290 {
|
||||
<a name="l00291"></a>00291 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00292"></a>00292 Xn = *pIn++;
|
||||
<a name="l00293"></a>00293
|
||||
<a name="l00294"></a>00294 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00295"></a>00295 acc = (b0 * Xn) + (b1 * Xn1) + (b2 * Xn2) + (a1 * Yn1) + (a2 * Yn2);
|
||||
<a name="l00296"></a>00296
|
||||
<a name="l00297"></a>00297 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00298"></a>00298 *pOut++ = acc;
|
||||
<a name="l00299"></a>00299
|
||||
<a name="l00300"></a>00300 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00301"></a>00301 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00302"></a>00302 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00303"></a>00303 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00304"></a>00304 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00305"></a>00305 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00306"></a>00306 Xn2 = Xn1;
|
||||
<a name="l00307"></a>00307 Xn1 = Xn;
|
||||
<a name="l00308"></a>00308 Yn2 = Yn1;
|
||||
<a name="l00309"></a>00309 Yn1 = acc;
|
||||
<a name="l00310"></a>00310
|
||||
<a name="l00311"></a>00311 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00312"></a>00312 sample--;
|
||||
<a name="l00313"></a>00313
|
||||
<a name="l00314"></a>00314 }
|
||||
<a name="l00315"></a>00315
|
||||
<a name="l00316"></a>00316 <span class="comment">/* Store the updated state variables back into the pState array */</span>
|
||||
<a name="l00317"></a>00317 *pState++ = Xn1;
|
||||
<a name="l00318"></a>00318 *pState++ = Xn2;
|
||||
<a name="l00319"></a>00319 *pState++ = Yn1;
|
||||
<a name="l00320"></a>00320 *pState++ = Yn2;
|
||||
<a name="l00321"></a>00321
|
||||
<a name="l00322"></a>00322 <span class="comment">/* The first stage goes from the input wire to the output wire. */</span>
|
||||
<a name="l00323"></a>00323 <span class="comment">/* Subsequent numStages occur in-place in the output wire */</span>
|
||||
<a name="l00324"></a>00324 pIn = pDst;
|
||||
<a name="l00325"></a>00325
|
||||
<a name="l00326"></a>00326 <span class="comment">/* Reset the output pointer */</span>
|
||||
<a name="l00327"></a>00327 pOut = pDst;
|
||||
<a name="l00328"></a>00328
|
||||
<a name="l00329"></a>00329 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00330"></a>00330 stage--;
|
||||
<a name="l00331"></a>00331
|
||||
<a name="l00332"></a>00332 } <span class="keywordflow">while</span>(stage > 0u);
|
||||
<a name="l00333"></a>00333
|
||||
<a name="l00334"></a>00334 }
|
||||
<a name="l00335"></a>00335
|
||||
<a name="l00336"></a>00336
|
||||
</pre></div></div>
|
||||
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<h1>arm_biquad_cascade_df1_fast_q15.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__biquad__cascade__df1__fast__q15_8c_source.html">Go to the source code of this file.</a></p>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#gaffb9792c0220882efd4c58f3c6a05fd7">arm_biquad_cascade_df1_fast_q15</a> (const <a class="el" href="structarm__biquad__casd__df1__inst__q15.html">arm_biquad_casd_df1_inst_q15</a> *S, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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|
||||
<h1>arm_biquad_cascade_df1_fast_q15.c</h1> </div>
|
||||
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|
||||
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|
||||
<a href="arm__biquad__cascade__df1__fast__q15_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_fast_q15.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Fast processing function for the </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* Q15 Biquad cascade filter. </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.9 2010/08/16 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* Initial version </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00034"></a>00034
|
||||
<a name="l00066"></a><a class="code" href="group___biquad_cascade_d_f1.html#gaffb9792c0220882efd4c58f3c6a05fd7">00066</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#gaffb9792c0220882efd4c58f3c6a05fd7" title="Fast but less precise processing function for the Q15 Biquad cascade filter.">arm_biquad_cascade_df1_fast_q15</a>(
|
||||
<a name="l00067"></a>00067 <span class="keyword">const</span> <a class="code" href="structarm__biquad__casd__df1__inst__q15.html" title="Instance structure for the Q15 Biquad cascade filter.">arm_biquad_casd_df1_inst_q15</a> * S,
|
||||
<a name="l00068"></a>00068 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pSrc,
|
||||
<a name="l00069"></a>00069 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pDst,
|
||||
<a name="l00070"></a>00070 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00071"></a>00071 {
|
||||
<a name="l00072"></a>00072 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pIn = pSrc; <span class="comment">/* Source pointer */</span>
|
||||
<a name="l00073"></a>00073 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pOut = pDst; <span class="comment">/* Destination pointer */</span>
|
||||
<a name="l00074"></a>00074 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> in; <span class="comment">/* Temporary variable to hold input value */</span>
|
||||
<a name="l00075"></a>00075 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> out; <span class="comment">/* Temporary variable to hold output value */</span>
|
||||
<a name="l00076"></a>00076 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> b0;
|
||||
<a name="l00077"></a>00077 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> b1, a1; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00078"></a>00078 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> state_in, state_out; <span class="comment">/* Filter state variables */</span>
|
||||
<a name="l00079"></a>00079 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> acc0; <span class="comment">/* Accumulator */</span>
|
||||
<a name="l00080"></a>00080 int32_t shift = (int32_t) (15 - S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#ada7e9d6269e6ed4eacf8f68729e9832d">postShift</a>); <span class="comment">/* Post shift */</span>
|
||||
<a name="l00081"></a>00081 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pState = S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#a5481104ef2f8f81360b80b47d69ae932">pState</a>; <span class="comment">/* State pointer */</span>
|
||||
<a name="l00082"></a>00082 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#a1edaacdebb5b09d7635bf20c779855fc">pCoeffs</a>; <span class="comment">/* Coefficient pointer */</span>
|
||||
<a name="l00083"></a>00083 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pState_q31; <span class="comment">/* 32-bit state pointer for SIMD implementation */</span>
|
||||
<a name="l00084"></a>00084 uint32_t sample, stage = S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#ad6d95e70abcf4ff1300181415ad92153">numStages</a>; <span class="comment">/* Stage loop counter */</span>
|
||||
<a name="l00085"></a>00085
|
||||
<a name="l00086"></a>00086
|
||||
<a name="l00087"></a>00087
|
||||
<a name="l00088"></a>00088 <span class="keywordflow">do</span>
|
||||
<a name="l00089"></a>00089 {
|
||||
<a name="l00090"></a>00090 <span class="comment">/* Initialize state pointer of type q31 */</span>
|
||||
<a name="l00091"></a>00091 pState_q31 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *) (pState);
|
||||
<a name="l00092"></a>00092
|
||||
<a name="l00093"></a>00093 <span class="comment">/* Read the b0 and 0 coefficients using SIMD */</span>
|
||||
<a name="l00094"></a>00094 b0 = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pCoeffs)++;
|
||||
<a name="l00095"></a>00095
|
||||
<a name="l00096"></a>00096 <span class="comment">/* Read the b1 and b2 coefficients using SIMD */</span>
|
||||
<a name="l00097"></a>00097 b1 = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pCoeffs)++;
|
||||
<a name="l00098"></a>00098
|
||||
<a name="l00099"></a>00099 <span class="comment">/* Read the a1 and a2 coefficients using SIMD */</span>
|
||||
<a name="l00100"></a>00100 a1 = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pCoeffs)++;
|
||||
<a name="l00101"></a>00101
|
||||
<a name="l00102"></a>00102 <span class="comment">/* Read the input state values from the state buffer: x[n-1], x[n-2] */</span>
|
||||
<a name="l00103"></a>00103 state_in = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (*pState_q31++);
|
||||
<a name="l00104"></a>00104
|
||||
<a name="l00105"></a>00105 <span class="comment">/* Read the output state values from the state buffer: y[n-1], y[n-2] */</span>
|
||||
<a name="l00106"></a>00106 state_out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (*pState_q31);
|
||||
<a name="l00107"></a>00107
|
||||
<a name="l00108"></a>00108 <span class="comment">/* Apply loop unrolling and compute 2 output values simultaneously. */</span>
|
||||
<a name="l00109"></a>00109 <span class="comment">/* The variables acc0 ... acc3 hold output values that are being computed: </span>
|
||||
<a name="l00110"></a>00110 <span class="comment"> * </span>
|
||||
<a name="l00111"></a>00111 <span class="comment"> * acc0 = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00112"></a>00112 <span class="comment"> * acc0 = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00113"></a>00113 <span class="comment"> */</span>
|
||||
<a name="l00114"></a>00114 sample = blockSize >> 1u;
|
||||
<a name="l00115"></a>00115
|
||||
<a name="l00116"></a>00116 <span class="comment">/* First part of the processing with loop unrolling. Compute 2 outputs at a time. </span>
|
||||
<a name="l00117"></a>00117 <span class="comment"> ** a second loop below computes the remaining 1 sample. */</span>
|
||||
<a name="l00118"></a>00118 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00119"></a>00119 {
|
||||
<a name="l00120"></a>00120
|
||||
<a name="l00121"></a>00121 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00122"></a>00122 in = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pIn)++;
|
||||
<a name="l00123"></a>00123
|
||||
<a name="l00124"></a>00124 <span class="comment">/* out = b0 * x[n] + 0 * 0 */</span>
|
||||
<a name="l00125"></a>00125 out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) b0 * ((<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>) in);
|
||||
<a name="l00126"></a>00126 <span class="comment">/* acc0 = b1 * x[n-1] + acc0 += b2 * x[n-2] + out */</span>
|
||||
<a name="l00127"></a>00127 acc0 = __SMLAD(b1, state_in, out);
|
||||
<a name="l00128"></a>00128 <span class="comment">/* acc0 += a1 * y[n-1] + acc0 += a2 * y[n-2] */</span>
|
||||
<a name="l00129"></a>00129 acc0 = __SMLAD(a1, state_out, acc0);
|
||||
<a name="l00130"></a>00130
|
||||
<a name="l00131"></a>00131 <span class="comment">/* The result is converted from 3.29 to 1.31 and then saturation is applied */</span>
|
||||
<a name="l00132"></a>00132 out = __SSAT((acc0 >> shift), 16);
|
||||
<a name="l00133"></a>00133
|
||||
<a name="l00134"></a>00134 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00135"></a>00135 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00136"></a>00136 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00137"></a>00137 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00138"></a>00138 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00139"></a>00139 <span class="comment">/* Yn1 = acc0 */</span>
|
||||
<a name="l00140"></a>00140 <span class="comment">/* x[n-N], x[n-N-1] are packed together to make state_in of type q31 */</span>
|
||||
<a name="l00141"></a>00141 <span class="comment">/* y[n-N], y[n-N-1] are packed together to make state_out of type q31 */</span>
|
||||
<a name="l00142"></a>00142 state_in = __PKHBT(in, state_in, 16);
|
||||
<a name="l00143"></a>00143 state_out = __PKHBT(out, state_out, 16);
|
||||
<a name="l00144"></a>00144
|
||||
<a name="l00145"></a>00145 <span class="comment">/* out = b0 * x[n] + 0 * 0 */</span>
|
||||
<a name="l00146"></a>00146 out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) b0 *((<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>)(in >> 16));
|
||||
<a name="l00147"></a>00147 <span class="comment">/* acc0 = b1 * x[n-1] + acc0 += b2 * x[n-2] + out */</span>
|
||||
<a name="l00148"></a>00148 acc0 = __SMLAD(b1, state_in, out);
|
||||
<a name="l00149"></a>00149 <span class="comment">/* acc0 += a1 * y[n-1] + acc0 += a2 * y[n-2] */</span>
|
||||
<a name="l00150"></a>00150 acc0 = __SMLAD(a1, state_out, acc0);
|
||||
<a name="l00151"></a>00151
|
||||
<a name="l00152"></a>00152 <span class="comment">/* The result is converted from 3.29 to 1.31 and then saturation is applied */</span>
|
||||
<a name="l00153"></a>00153 out = __SSAT((acc0 >> shift), 16);
|
||||
<a name="l00154"></a>00154
|
||||
<a name="l00155"></a>00155 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00156"></a>00156 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pOut)++ = __PKHBT(state_out, out, 16);
|
||||
<a name="l00157"></a>00157
|
||||
<a name="l00158"></a>00158 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00159"></a>00159 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00160"></a>00160 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00161"></a>00161 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00162"></a>00162 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00163"></a>00163 <span class="comment">/* Yn1 = acc0 */</span>
|
||||
<a name="l00164"></a>00164 <span class="comment">/* x[n-N], x[n-N-1] are packed together to make state_in of type q31 */</span>
|
||||
<a name="l00165"></a>00165 <span class="comment">/* y[n-N], y[n-N-1] are packed together to make state_out of type q31 */</span>
|
||||
<a name="l00166"></a>00166 state_in = __PKHBT(in >> 16, state_in, 16);
|
||||
<a name="l00167"></a>00167 state_out = __PKHBT(out, state_out, 16);
|
||||
<a name="l00168"></a>00168
|
||||
<a name="l00169"></a>00169 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00170"></a>00170 sample--;
|
||||
<a name="l00171"></a>00171
|
||||
<a name="l00172"></a>00172 }
|
||||
<a name="l00173"></a>00173
|
||||
<a name="l00174"></a>00174 <span class="comment">/* If the blockSize is not a multiple of 2, compute any remaining output samples here. </span>
|
||||
<a name="l00175"></a>00175 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00176"></a>00176
|
||||
<a name="l00177"></a>00177 <span class="keywordflow">if</span>((blockSize & 0x1u) != 0u)
|
||||
<a name="l00178"></a>00178 {
|
||||
<a name="l00179"></a>00179 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00180"></a>00180 in = *pIn++;
|
||||
<a name="l00181"></a>00181
|
||||
<a name="l00182"></a>00182 <span class="comment">/* out = b0 * x[n] + 0 * 0 */</span>
|
||||
<a name="l00183"></a>00183 out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) in *b0;
|
||||
<a name="l00184"></a>00184 <span class="comment">/* acc0 = b1 * x[n-1] + acc0 += b2 * x[n-2] + out */</span>
|
||||
<a name="l00185"></a>00185 acc0 = __SMLAD(b1, state_in, out);
|
||||
<a name="l00186"></a>00186 <span class="comment">/* acc0 += a1 * y[n-1] + acc0 += a2 * y[n-2] */</span>
|
||||
<a name="l00187"></a>00187 acc0 = __SMLAD(a1, state_out, acc0);
|
||||
<a name="l00188"></a>00188
|
||||
<a name="l00189"></a>00189 <span class="comment">/* The result is converted from 3.29 to 1.31 and then saturation is applied */</span>
|
||||
<a name="l00190"></a>00190 out = __SSAT((acc0 >> shift), 16);
|
||||
<a name="l00191"></a>00191
|
||||
<a name="l00192"></a>00192 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00193"></a>00193 *pOut++ = (<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>) out;
|
||||
<a name="l00194"></a>00194
|
||||
<a name="l00195"></a>00195 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00196"></a>00196 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00197"></a>00197 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00198"></a>00198 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00199"></a>00199 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00200"></a>00200 <span class="comment">/* Yn1 = acc0 */</span>
|
||||
<a name="l00201"></a>00201 <span class="comment">/* x[n-N], x[n-N-1] are packed together to make state_in of type q31 */</span>
|
||||
<a name="l00202"></a>00202 <span class="comment">/* y[n-N], y[n-N-1] are packed together to make state_out of type q31 */</span>
|
||||
<a name="l00203"></a>00203 state_in = __PKHBT(in, state_in, 16);
|
||||
<a name="l00204"></a>00204 state_out = __PKHBT(out, state_out, 16);
|
||||
<a name="l00205"></a>00205
|
||||
<a name="l00206"></a>00206 }
|
||||
<a name="l00207"></a>00207
|
||||
<a name="l00208"></a>00208 <span class="comment">/* The first stage goes from the input buffer to the output buffer. */</span>
|
||||
<a name="l00209"></a>00209 <span class="comment">/* Subsequent (numStages - 1) occur in-place in the output buffer */</span>
|
||||
<a name="l00210"></a>00210 pIn = pDst;
|
||||
<a name="l00211"></a>00211
|
||||
<a name="l00212"></a>00212 <span class="comment">/* Reset the output pointer */</span>
|
||||
<a name="l00213"></a>00213 pOut = pDst;
|
||||
<a name="l00214"></a>00214
|
||||
<a name="l00215"></a>00215 <span class="comment">/* Store the updated state variables back into the state array */</span>
|
||||
<a name="l00216"></a>00216 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pState)++ = __PKHBT(state_in, (state_in >> 16), 16);
|
||||
<a name="l00217"></a>00217 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pState)++ = __PKHBT(state_out, (state_out >> 16), 16);
|
||||
<a name="l00218"></a>00218
|
||||
<a name="l00219"></a>00219 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00220"></a>00220 stage--;
|
||||
<a name="l00221"></a>00221
|
||||
<a name="l00222"></a>00222 } <span class="keywordflow">while</span>(stage > 0u);
|
||||
<a name="l00223"></a>00223 }
|
||||
<a name="l00224"></a>00224
|
||||
<a name="l00225"></a>00225
|
||||
</pre></div></div>
|
||||
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<h1>arm_biquad_cascade_df1_fast_q31.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__biquad__cascade__df1__fast__q31_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#ga456390f5e448afad3a38bed7d6e380e3">arm_biquad_cascade_df1_fast_q31</a> (const <a class="el" href="structarm__biquad__casd__df1__inst__q31.html">arm_biquad_casd_df1_inst_q31</a> *S, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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||||
<a href="arm__biquad__cascade__df1__fast__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_fast_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Processing function for the </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* Q31 Fast Biquad cascade DirectFormI(DF1) filter. </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.9 2010/08/27 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* Initial version </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00031"></a>00031
|
||||
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00033"></a>00033
|
||||
<a name="l00067"></a><a class="code" href="group___biquad_cascade_d_f1.html#ga456390f5e448afad3a38bed7d6e380e3">00067</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#ga456390f5e448afad3a38bed7d6e380e3" title="Fast but less precise processing function for the Q31 Biquad cascade filter.">arm_biquad_cascade_df1_fast_q31</a>(
|
||||
<a name="l00068"></a>00068 <span class="keyword">const</span> <a class="code" href="structarm__biquad__casd__df1__inst__q31.html" title="Instance structure for the Q31 Biquad cascade filter.">arm_biquad_casd_df1_inst_q31</a> * S,
|
||||
<a name="l00069"></a>00069 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrc,
|
||||
<a name="l00070"></a>00070 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pDst,
|
||||
<a name="l00071"></a>00071 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00072"></a>00072 {
|
||||
<a name="l00073"></a>00073 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pIn = pSrc; <span class="comment">/* input pointer initialization */</span>
|
||||
<a name="l00074"></a>00074 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pOut = pDst; <span class="comment">/* output pointer initialization */</span>
|
||||
<a name="l00075"></a>00075 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pState = S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a5dcf4727f58eb4e8e8b392508d8657bb">pState</a>; <span class="comment">/* pState pointer initialization */</span>
|
||||
<a name="l00076"></a>00076 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#aa62366c632f3b5305086f841f079dbd2">pCoeffs</a>; <span class="comment">/* coeff pointer initialization */</span>
|
||||
<a name="l00077"></a>00077 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> acc; <span class="comment">/* accumulator */</span>
|
||||
<a name="l00078"></a>00078 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> Xn1, Xn2, Yn1, Yn2; <span class="comment">/* Filter state variables */</span>
|
||||
<a name="l00079"></a>00079 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> b0, b1, b2, a1, a2; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00080"></a>00080 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> Xn; <span class="comment">/* temporary input */</span>
|
||||
<a name="l00081"></a>00081 int32_t shift = (int32_t) S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a636c7fbe09ec4bef0bc0a4b4e2151cbe">postShift</a> + 1; <span class="comment">/* Shift to be applied to the output */</span>
|
||||
<a name="l00082"></a>00082 uint32_t sample, stage = S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a2c2b579f1df1d8273a5d9d945c27e1b2">numStages</a>; <span class="comment">/* loop counters */</span>
|
||||
<a name="l00083"></a>00083
|
||||
<a name="l00084"></a>00084
|
||||
<a name="l00085"></a>00085 <span class="keywordflow">do</span>
|
||||
<a name="l00086"></a>00086 {
|
||||
<a name="l00087"></a>00087 <span class="comment">/* Reading the coefficients */</span>
|
||||
<a name="l00088"></a>00088 b0 = *pCoeffs++;
|
||||
<a name="l00089"></a>00089 b1 = *pCoeffs++;
|
||||
<a name="l00090"></a>00090 b2 = *pCoeffs++;
|
||||
<a name="l00091"></a>00091 a1 = *pCoeffs++;
|
||||
<a name="l00092"></a>00092 a2 = *pCoeffs++;
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00094"></a>00094 <span class="comment">/* Reading the state values */</span>
|
||||
<a name="l00095"></a>00095 Xn1 = pState[0];
|
||||
<a name="l00096"></a>00096 Xn2 = pState[1];
|
||||
<a name="l00097"></a>00097 Yn1 = pState[2];
|
||||
<a name="l00098"></a>00098 Yn2 = pState[3];
|
||||
<a name="l00099"></a>00099
|
||||
<a name="l00100"></a>00100 <span class="comment">/* Apply loop unrolling and compute 4 output values simultaneously. */</span>
|
||||
<a name="l00101"></a>00101 <span class="comment">/* The variables acc ... acc3 hold output values that are being computed: </span>
|
||||
<a name="l00102"></a>00102 <span class="comment"> * </span>
|
||||
<a name="l00103"></a>00103 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00104"></a>00104 <span class="comment"> */</span>
|
||||
<a name="l00105"></a>00105
|
||||
<a name="l00106"></a>00106 sample = blockSize >> 2u;
|
||||
<a name="l00107"></a>00107
|
||||
<a name="l00108"></a>00108 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00109"></a>00109 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00110"></a>00110 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00111"></a>00111 {
|
||||
<a name="l00112"></a>00112 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00113"></a>00113 Xn = *pIn++;
|
||||
<a name="l00114"></a>00114
|
||||
<a name="l00115"></a>00115 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00116"></a>00116 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00117"></a>00117 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 * Xn) >> 32);
|
||||
<a name="l00118"></a>00118 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00119"></a>00119 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b1 * (Xn1))) >> 32);
|
||||
<a name="l00120"></a>00120 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00121"></a>00121 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b2 * (Xn2))) >> 32);
|
||||
<a name="l00122"></a>00122 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00123"></a>00123 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a1 * (Yn1))) >> 32);
|
||||
<a name="l00124"></a>00124 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00125"></a>00125 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a2 * (Yn2))) >> 32);
|
||||
<a name="l00126"></a>00126
|
||||
<a name="l00127"></a>00127 <span class="comment">/* The result is converted to 1.31 , Yn2 variable is reused */</span>
|
||||
<a name="l00128"></a>00128 Yn2 = acc << shift;
|
||||
<a name="l00129"></a>00129
|
||||
<a name="l00130"></a>00130 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00131"></a>00131 *pOut++ = Yn2;
|
||||
<a name="l00132"></a>00132
|
||||
<a name="l00133"></a>00133 <span class="comment">/* Read the second input */</span>
|
||||
<a name="l00134"></a>00134 Xn2 = *pIn++;
|
||||
<a name="l00135"></a>00135
|
||||
<a name="l00136"></a>00136 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00137"></a>00137 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00138"></a>00138 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 * (Xn2)) >> 32);
|
||||
<a name="l00139"></a>00139 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00140"></a>00140 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b1 * (Xn))) >> 32);
|
||||
<a name="l00141"></a>00141 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00142"></a>00142 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b2 * (Xn1))) >> 32);
|
||||
<a name="l00143"></a>00143 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00144"></a>00144 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a1 * (Yn2))) >> 32);
|
||||
<a name="l00145"></a>00145 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00146"></a>00146 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 * (Yn1))) >> 32);
|
||||
<a name="l00147"></a>00147
|
||||
<a name="l00148"></a>00148 <span class="comment">/* The result is converted to 1.31, Yn1 variable is reused */</span>
|
||||
<a name="l00149"></a>00149 Yn1 = acc << shift;
|
||||
<a name="l00150"></a>00150
|
||||
<a name="l00151"></a>00151 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00152"></a>00152 *pOut++ = Yn1;
|
||||
<a name="l00153"></a>00153
|
||||
<a name="l00154"></a>00154 <span class="comment">/* Read the third input */</span>
|
||||
<a name="l00155"></a>00155 Xn1 = *pIn++;
|
||||
<a name="l00156"></a>00156
|
||||
<a name="l00157"></a>00157 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00158"></a>00158 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00159"></a>00159 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 * (Xn1)) >> 32);
|
||||
<a name="l00160"></a>00160 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00161"></a>00161 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b1 * (Xn2))) >> 32);
|
||||
<a name="l00162"></a>00162 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00163"></a>00163 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b2 * (Xn))) >> 32);
|
||||
<a name="l00164"></a>00164 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00165"></a>00165 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a1 * (Yn1))) >> 32);
|
||||
<a name="l00166"></a>00166 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00167"></a>00167 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a2 * (Yn2))) >> 32);
|
||||
<a name="l00168"></a>00168
|
||||
<a name="l00169"></a>00169 <span class="comment">/* The result is converted to 1.31, Yn2 variable is reused */</span>
|
||||
<a name="l00170"></a>00170 Yn2 = acc << shift;
|
||||
<a name="l00171"></a>00171
|
||||
<a name="l00172"></a>00172 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00173"></a>00173 *pOut++ = Yn2;
|
||||
<a name="l00174"></a>00174
|
||||
<a name="l00175"></a>00175 <span class="comment">/* Read the forth input */</span>
|
||||
<a name="l00176"></a>00176 Xn = *pIn++;
|
||||
<a name="l00177"></a>00177
|
||||
<a name="l00178"></a>00178 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00179"></a>00179 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00180"></a>00180 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 * (Xn)) >> 32);
|
||||
<a name="l00181"></a>00181 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00182"></a>00182 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b1 * (Xn1))) >> 32);
|
||||
<a name="l00183"></a>00183 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00184"></a>00184 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b2 * (Xn2))) >> 32);
|
||||
<a name="l00185"></a>00185 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00186"></a>00186 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a1 * (Yn2))) >> 32);
|
||||
<a name="l00187"></a>00187 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00188"></a>00188 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 * (Yn1))) >> 32);
|
||||
<a name="l00189"></a>00189
|
||||
<a name="l00190"></a>00190 <span class="comment">/* The result is converted to 1.31, Yn1 variable is reused */</span>
|
||||
<a name="l00191"></a>00191 Yn1 = acc << shift;
|
||||
<a name="l00192"></a>00192
|
||||
<a name="l00193"></a>00193 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00194"></a>00194 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00195"></a>00195 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00196"></a>00196 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00197"></a>00197 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00198"></a>00198 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00199"></a>00199 Xn2 = Xn1;
|
||||
<a name="l00200"></a>00200 Xn1 = Xn;
|
||||
<a name="l00201"></a>00201
|
||||
<a name="l00202"></a>00202 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00203"></a>00203 *pOut++ = Yn1;
|
||||
<a name="l00204"></a>00204
|
||||
<a name="l00205"></a>00205 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00206"></a>00206 sample--;
|
||||
<a name="l00207"></a>00207 }
|
||||
<a name="l00208"></a>00208
|
||||
<a name="l00209"></a>00209 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00210"></a>00210 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00211"></a>00211 sample = (blockSize & 0x3u);
|
||||
<a name="l00212"></a>00212
|
||||
<a name="l00213"></a>00213 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00214"></a>00214 {
|
||||
<a name="l00215"></a>00215 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00216"></a>00216 Xn = *pIn++;
|
||||
<a name="l00217"></a>00217
|
||||
<a name="l00218"></a>00218 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00219"></a>00219 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00220"></a>00220 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 * (Xn)) >> 32);
|
||||
<a name="l00221"></a>00221 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00222"></a>00222 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b1 * (Xn1))) >> 32);
|
||||
<a name="l00223"></a>00223 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00224"></a>00224 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) b2 * (Xn2))) >> 32);
|
||||
<a name="l00225"></a>00225 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00226"></a>00226 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a1 * (Yn1))) >> 32);
|
||||
<a name="l00227"></a>00227 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00228"></a>00228 acc = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) ((((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) acc << 32) + ((q63_t) a2 * (Yn2))) >> 32);
|
||||
<a name="l00229"></a>00229 <span class="comment">/* The result is converted to 1.31 */</span>
|
||||
<a name="l00230"></a>00230 acc = acc << shift;
|
||||
<a name="l00231"></a>00231
|
||||
<a name="l00232"></a>00232 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00233"></a>00233 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00234"></a>00234 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00235"></a>00235 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00236"></a>00236 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00237"></a>00237 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00238"></a>00238 Xn2 = Xn1;
|
||||
<a name="l00239"></a>00239 Xn1 = Xn;
|
||||
<a name="l00240"></a>00240 Yn2 = Yn1;
|
||||
<a name="l00241"></a>00241 Yn1 = acc;
|
||||
<a name="l00242"></a>00242
|
||||
<a name="l00243"></a>00243 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00244"></a>00244 *pOut++ = acc;
|
||||
<a name="l00245"></a>00245
|
||||
<a name="l00246"></a>00246 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00247"></a>00247 sample--;
|
||||
<a name="l00248"></a>00248 }
|
||||
<a name="l00249"></a>00249
|
||||
<a name="l00250"></a>00250 <span class="comment">/* The first stage goes from the input buffer to the output buffer. */</span>
|
||||
<a name="l00251"></a>00251 <span class="comment">/* Subsequent stages occur in-place in the output buffer */</span>
|
||||
<a name="l00252"></a>00252 pIn = pDst;
|
||||
<a name="l00253"></a>00253
|
||||
<a name="l00254"></a>00254 <span class="comment">/* Reset to destination pointer */</span>
|
||||
<a name="l00255"></a>00255 pOut = pDst;
|
||||
<a name="l00256"></a>00256
|
||||
<a name="l00257"></a>00257 <span class="comment">/* Store the updated state variables back into the pState array */</span>
|
||||
<a name="l00258"></a>00258 *pState++ = Xn1;
|
||||
<a name="l00259"></a>00259 *pState++ = Xn2;
|
||||
<a name="l00260"></a>00260 *pState++ = Yn1;
|
||||
<a name="l00261"></a>00261 *pState++ = Yn2;
|
||||
<a name="l00262"></a>00262
|
||||
<a name="l00263"></a>00263 } <span class="keywordflow">while</span>(--stage);
|
||||
<a name="l00264"></a>00264 }
|
||||
<a name="l00265"></a>00265
|
||||
</pre></div></div>
|
||||
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<h1>arm_biquad_cascade_df1_init_f32.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__biquad__cascade__df1__init__f32_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#ga8e73b69a788e681a61bccc8959d823c5">arm_biquad_cascade_df1_init_f32</a> (<a class="el" href="structarm__biquad__casd__df1__inst__f32.html">arm_biquad_casd_df1_inst_f32</a> *S, uint8_t numStages, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoeffs, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pState)</td></tr>
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<a href="arm__biquad__cascade__df1__init__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*----------------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_init_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: floating-point Biquad cascade DirectFormI(DF1) filter initialization function. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Initial version </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* ---------------------------------------------------------------------------*/</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00034"></a>00034
|
||||
<a name="l00080"></a><a class="code" href="group___biquad_cascade_d_f1.html#ga8e73b69a788e681a61bccc8959d823c5">00080</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#ga8e73b69a788e681a61bccc8959d823c5" title="Initialization function for the floating-point Biquad cascade filter.">arm_biquad_cascade_df1_init_f32</a>(
|
||||
<a name="l00081"></a>00081 <a class="code" href="structarm__biquad__casd__df1__inst__f32.html" title="Instance structure for the floating-point Biquad cascade filter.">arm_biquad_casd_df1_inst_f32</a> * S,
|
||||
<a name="l00082"></a>00082 uint8_t numStages,
|
||||
<a name="l00083"></a>00083 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pCoeffs,
|
||||
<a name="l00084"></a>00084 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pState)
|
||||
<a name="l00085"></a>00085 {
|
||||
<a name="l00086"></a>00086 <span class="comment">/* Assign filter stages */</span>
|
||||
<a name="l00087"></a>00087 S-><a class="code" href="structarm__biquad__casd__df1__inst__f32.html#af69820c37a87252c46453e4cfe120585">numStages</a> = numStages;
|
||||
<a name="l00088"></a>00088
|
||||
<a name="l00089"></a>00089 <span class="comment">/* Assign coefficient pointer */</span>
|
||||
<a name="l00090"></a>00090 S-><a class="code" href="structarm__biquad__casd__df1__inst__f32.html#af9df3820576fb921809d1462c9c6d16c">pCoeffs</a> = pCoeffs;
|
||||
<a name="l00091"></a>00091
|
||||
<a name="l00092"></a>00092 <span class="comment">/* Clear state buffer and size is always 4 * numStages */</span>
|
||||
<a name="l00093"></a>00093 memset(pState, 0, (4u * (uint32_t) numStages) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>));
|
||||
<a name="l00094"></a>00094
|
||||
<a name="l00095"></a>00095 <span class="comment">/* Assign state pointer */</span>
|
||||
<a name="l00096"></a>00096 S-><a class="code" href="structarm__biquad__casd__df1__inst__f32.html#a8c245d79e0d8cfabc82409d4b54fb682">pState</a> = pState;
|
||||
<a name="l00097"></a>00097 }
|
||||
<a name="l00098"></a>00098
|
||||
</pre></div></div>
|
||||
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<h1>arm_biquad_cascade_df1_init_q15.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
|
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<p><a href="arm__biquad__cascade__df1__init__q15_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#gad54c724132f6d742a444eb6df0e9c731">arm_biquad_cascade_df1_init_q15</a> (<a class="el" href="structarm__biquad__casd__df1__inst__q15.html">arm_biquad_casd_df1_inst_q15</a> *S, uint8_t numStages, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCoeffs, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pState, int8_t postShift)</td></tr>
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<h1>arm_biquad_cascade_df1_init_q15.c</h1> </div>
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||||
<a href="arm__biquad__cascade__df1__init__q15_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*----------------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_init_q15.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q15 Biquad cascade DirectFormI(DF1) filter initialization function. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Initial version </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* ---------------------------------------------------------------------------*/</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00034"></a>00034
|
||||
<a name="l00078"></a><a class="code" href="group___biquad_cascade_d_f1.html#gad54c724132f6d742a444eb6df0e9c731">00078</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#gad54c724132f6d742a444eb6df0e9c731" title="Initialization function for the Q15 Biquad cascade filter.">arm_biquad_cascade_df1_init_q15</a>(
|
||||
<a name="l00079"></a>00079 <a class="code" href="structarm__biquad__casd__df1__inst__q15.html" title="Instance structure for the Q15 Biquad cascade filter.">arm_biquad_casd_df1_inst_q15</a> * S,
|
||||
<a name="l00080"></a>00080 uint8_t numStages,
|
||||
<a name="l00081"></a>00081 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pCoeffs,
|
||||
<a name="l00082"></a>00082 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pState,
|
||||
<a name="l00083"></a>00083 int8_t postShift)
|
||||
<a name="l00084"></a>00084 {
|
||||
<a name="l00085"></a>00085 <span class="comment">/* Assign filter stages */</span>
|
||||
<a name="l00086"></a>00086 S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#ad6d95e70abcf4ff1300181415ad92153">numStages</a> = numStages;
|
||||
<a name="l00087"></a>00087
|
||||
<a name="l00088"></a>00088 <span class="comment">/* Assign postShift to be applied to the output */</span>
|
||||
<a name="l00089"></a>00089 S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#ada7e9d6269e6ed4eacf8f68729e9832d">postShift</a> = postShift;
|
||||
<a name="l00090"></a>00090
|
||||
<a name="l00091"></a>00091 <span class="comment">/* Assign coefficient pointer */</span>
|
||||
<a name="l00092"></a>00092 S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#a1edaacdebb5b09d7635bf20c779855fc">pCoeffs</a> = pCoeffs;
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00094"></a>00094 <span class="comment">/* Clear state buffer and size is always 4 * numStages */</span>
|
||||
<a name="l00095"></a>00095 memset(pState, 0, (4u * (uint32_t) numStages) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>));
|
||||
<a name="l00096"></a>00096
|
||||
<a name="l00097"></a>00097 <span class="comment">/* Assign state pointer */</span>
|
||||
<a name="l00098"></a>00098 S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#a5481104ef2f8f81360b80b47d69ae932">pState</a> = pState;
|
||||
<a name="l00099"></a>00099 }
|
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<a name="l00100"></a>00100
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#gaf42a44f9b16d61e636418c83eefe577b">arm_biquad_cascade_df1_init_q31</a> (<a class="el" href="structarm__biquad__casd__df1__inst__q31.html">arm_biquad_casd_df1_inst_q31</a> *S, uint8_t numStages, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoeffs, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pState, int8_t postShift)</td></tr>
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||||
<a href="arm__biquad__cascade__df1__init__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_init_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Q31 Biquad cascade DirectFormI(DF1) filter initialization function. </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* Initial version </span>
|
||||
<a name="l00032"></a>00032 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00033"></a>00033
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00078"></a><a class="code" href="group___biquad_cascade_d_f1.html#gaf42a44f9b16d61e636418c83eefe577b">00078</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#gaf42a44f9b16d61e636418c83eefe577b" title="Initialization function for the Q31 Biquad cascade filter.">arm_biquad_cascade_df1_init_q31</a>(
|
||||
<a name="l00079"></a>00079 <a class="code" href="structarm__biquad__casd__df1__inst__q31.html" title="Instance structure for the Q31 Biquad cascade filter.">arm_biquad_casd_df1_inst_q31</a> * S,
|
||||
<a name="l00080"></a>00080 uint8_t numStages,
|
||||
<a name="l00081"></a>00081 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pCoeffs,
|
||||
<a name="l00082"></a>00082 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pState,
|
||||
<a name="l00083"></a>00083 int8_t postShift)
|
||||
<a name="l00084"></a>00084 {
|
||||
<a name="l00085"></a>00085 <span class="comment">/* Assign filter stages */</span>
|
||||
<a name="l00086"></a>00086 S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a2c2b579f1df1d8273a5d9d945c27e1b2">numStages</a> = numStages;
|
||||
<a name="l00087"></a>00087
|
||||
<a name="l00088"></a>00088 <span class="comment">/* Assign postShift to be applied to the output */</span>
|
||||
<a name="l00089"></a>00089 S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a636c7fbe09ec4bef0bc0a4b4e2151cbe">postShift</a> = postShift;
|
||||
<a name="l00090"></a>00090
|
||||
<a name="l00091"></a>00091 <span class="comment">/* Assign coefficient pointer */</span>
|
||||
<a name="l00092"></a>00092 S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#aa62366c632f3b5305086f841f079dbd2">pCoeffs</a> = pCoeffs;
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00094"></a>00094 <span class="comment">/* Clear state buffer and size is always 4 * numStages */</span>
|
||||
<a name="l00095"></a>00095 memset(pState, 0, (4u * (uint32_t) numStages) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>));
|
||||
<a name="l00096"></a>00096
|
||||
<a name="l00097"></a>00097 <span class="comment">/* Assign state pointer */</span>
|
||||
<a name="l00098"></a>00098 S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a5dcf4727f58eb4e8e8b392508d8657bb">pState</a> = pState;
|
||||
<a name="l00099"></a>00099 }
|
||||
<a name="l00100"></a>00100
|
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#gadd66a0aefdc645031d607b0a5b37a942">arm_biquad_cascade_df1_q15</a> (const <a class="el" href="structarm__biquad__casd__df1__inst__q15.html">arm_biquad_casd_df1_inst_q15</a> *S, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<h1>arm_biquad_cascade_df1_q15.c</h1> </div>
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||||
<a href="arm__biquad__cascade__df1__q15_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_q15.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Processing function for the </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* Q15 Biquad cascade DirectFormI(DF1) filter. </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* Initial version </span>
|
||||
<a name="l00032"></a>00032 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00033"></a>00033
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00067"></a><a class="code" href="group___biquad_cascade_d_f1.html#gadd66a0aefdc645031d607b0a5b37a942">00067</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#gadd66a0aefdc645031d607b0a5b37a942" title="Processing function for the Q15 Biquad cascade filter.">arm_biquad_cascade_df1_q15</a>(
|
||||
<a name="l00068"></a>00068 <span class="keyword">const</span> <a class="code" href="structarm__biquad__casd__df1__inst__q15.html" title="Instance structure for the Q15 Biquad cascade filter.">arm_biquad_casd_df1_inst_q15</a> * S,
|
||||
<a name="l00069"></a>00069 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pSrc,
|
||||
<a name="l00070"></a>00070 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> * pDst,
|
||||
<a name="l00071"></a>00071 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00072"></a>00072 {
|
||||
<a name="l00073"></a>00073 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pIn = pSrc; <span class="comment">/* Source pointer */</span>
|
||||
<a name="l00074"></a>00074 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pOut = pDst; <span class="comment">/* Destination pointer */</span>
|
||||
<a name="l00075"></a>00075 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> in; <span class="comment">/* Temporary variable to hold input value */</span>
|
||||
<a name="l00076"></a>00076 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> out; <span class="comment">/* Temporary variable to hold output value */</span>
|
||||
<a name="l00077"></a>00077 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> b0; <span class="comment">/* Temporary variable to hold bo value */</span>
|
||||
<a name="l00078"></a>00078 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> b1, a1; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00079"></a>00079 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> state_in, state_out; <span class="comment">/* Filter state variables */</span>
|
||||
<a name="l00080"></a>00080 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> acc; <span class="comment">/* Accumulator */</span>
|
||||
<a name="l00081"></a>00081 int32_t shift = (15 - (int32_t) S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#ada7e9d6269e6ed4eacf8f68729e9832d">postShift</a>); <span class="comment">/* Post shift */</span>
|
||||
<a name="l00082"></a>00082 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pState = S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#a5481104ef2f8f81360b80b47d69ae932">pState</a>; <span class="comment">/* State pointer */</span>
|
||||
<a name="l00083"></a>00083 <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#a1edaacdebb5b09d7635bf20c779855fc">pCoeffs</a>; <span class="comment">/* Coefficient pointer */</span>
|
||||
<a name="l00084"></a>00084 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pState_q31; <span class="comment">/* 32-bit state pointer for SIMD implementation */</span>
|
||||
<a name="l00085"></a>00085 uint32_t sample, stage = (uint32_t) S-><a class="code" href="structarm__biquad__casd__df1__inst__q15.html#ad6d95e70abcf4ff1300181415ad92153">numStages</a>; <span class="comment">/* Stage loop counter */</span>
|
||||
<a name="l00086"></a>00086
|
||||
<a name="l00087"></a>00087
|
||||
<a name="l00088"></a>00088
|
||||
<a name="l00089"></a>00089 <span class="keywordflow">do</span>
|
||||
<a name="l00090"></a>00090 {
|
||||
<a name="l00091"></a>00091 <span class="comment">/* Initialize state pointer of type q31 */</span>
|
||||
<a name="l00092"></a>00092 pState_q31 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *) (pState);
|
||||
<a name="l00093"></a>00093
|
||||
<a name="l00094"></a>00094 <span class="comment">/* Read the b0 and 0 coefficients using SIMD */</span>
|
||||
<a name="l00095"></a>00095 b0 = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pCoeffs)++;
|
||||
<a name="l00096"></a>00096
|
||||
<a name="l00097"></a>00097 <span class="comment">/* Read the b1 and b2 coefficients using SIMD */</span>
|
||||
<a name="l00098"></a>00098 b1 = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pCoeffs)++;
|
||||
<a name="l00099"></a>00099
|
||||
<a name="l00100"></a>00100 <span class="comment">/* Read the a1 and a2 coefficients using SIMD */</span>
|
||||
<a name="l00101"></a>00101 a1 = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pCoeffs)++;
|
||||
<a name="l00102"></a>00102
|
||||
<a name="l00103"></a>00103 <span class="comment">/* Read the input state values from the state buffer: x[n-1], x[n-2] */</span>
|
||||
<a name="l00104"></a>00104 state_in = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (*pState_q31++);
|
||||
<a name="l00105"></a>00105
|
||||
<a name="l00106"></a>00106 <span class="comment">/* Read the output state values from the state buffer: y[n-1], y[n-2] */</span>
|
||||
<a name="l00107"></a>00107 state_out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (*pState_q31);
|
||||
<a name="l00108"></a>00108
|
||||
<a name="l00109"></a>00109 <span class="comment">/* Apply loop unrolling and compute 2 output values simultaneously. */</span>
|
||||
<a name="l00110"></a>00110 <span class="comment">/* The variable acc hold output values that are being computed: </span>
|
||||
<a name="l00111"></a>00111 <span class="comment"> * </span>
|
||||
<a name="l00112"></a>00112 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00113"></a>00113 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00114"></a>00114 <span class="comment"> */</span>
|
||||
<a name="l00115"></a>00115 sample = blockSize >> 1u;
|
||||
<a name="l00116"></a>00116
|
||||
<a name="l00117"></a>00117 <span class="comment">/* First part of the processing with loop unrolling. Compute 2 outputs at a time. </span>
|
||||
<a name="l00118"></a>00118 <span class="comment"> ** a second loop below computes the remaining 1 sample. */</span>
|
||||
<a name="l00119"></a>00119 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00120"></a>00120 {
|
||||
<a name="l00121"></a>00121
|
||||
<a name="l00122"></a>00122 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00123"></a>00123 in = *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pIn)++;
|
||||
<a name="l00124"></a>00124
|
||||
<a name="l00125"></a>00125 <span class="comment">/* out = b0 * x[n] + 0 * 0 */</span>
|
||||
<a name="l00126"></a>00126 out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) b0 * ((<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>) in);
|
||||
<a name="l00127"></a>00127 <span class="comment">/* acc += b1 * x[n-1] + b2 * x[n-2] + out */</span>
|
||||
<a name="l00128"></a>00128 acc = __SMLALD(b1, state_in, out);
|
||||
<a name="l00129"></a>00129 <span class="comment">/* acc += a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00130"></a>00130 acc = __SMLALD(a1, state_out, acc);
|
||||
<a name="l00131"></a>00131
|
||||
<a name="l00132"></a>00132 <span class="comment">/* The result is converted from 3.29 to 1.31 if postShift = 1, and then saturation is applied */</span>
|
||||
<a name="l00133"></a>00133 out = __SSAT((acc >> shift), 16);
|
||||
<a name="l00134"></a>00134
|
||||
<a name="l00135"></a>00135 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00136"></a>00136 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00137"></a>00137 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00138"></a>00138 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00139"></a>00139 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00140"></a>00140 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00141"></a>00141 <span class="comment">/* x[n-N], x[n-N-1] are packed together to make state_in of type q31 */</span>
|
||||
<a name="l00142"></a>00142 <span class="comment">/* y[n-N], y[n-N-1] are packed together to make state_out of type q31 */</span>
|
||||
<a name="l00143"></a>00143 state_in = __PKHBT(in, state_in, 16);
|
||||
<a name="l00144"></a>00144 state_out = __PKHBT(out, state_out, 16);
|
||||
<a name="l00145"></a>00145
|
||||
<a name="l00146"></a>00146 <span class="comment">/* out = b0 * x[n] + 0 * 0 */</span>
|
||||
<a name="l00147"></a>00147 out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) b0 * ((<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>) (in >> 16));
|
||||
<a name="l00148"></a>00148 <span class="comment">/* acc += b1 * x[n-1] + b2 * x[n-2] + out */</span>
|
||||
<a name="l00149"></a>00149 acc = __SMLALD(b1, state_in, out);
|
||||
<a name="l00150"></a>00150 <span class="comment">/* acc += a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00151"></a>00151 acc = __SMLALD(a1, state_out, acc);
|
||||
<a name="l00152"></a>00152
|
||||
<a name="l00153"></a>00153 <span class="comment">/* The result is converted from 3.29 to 1.31 if postShift = 1, and then saturation is applied */</span>
|
||||
<a name="l00154"></a>00154 out = __SSAT((acc >> shift), 16);
|
||||
<a name="l00155"></a>00155
|
||||
<a name="l00156"></a>00156 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00157"></a>00157 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pOut)++ = __PKHBT(state_out, out, 16);
|
||||
<a name="l00158"></a>00158
|
||||
<a name="l00159"></a>00159 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00160"></a>00160 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00161"></a>00161 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00162"></a>00162 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00163"></a>00163 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00164"></a>00164 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00165"></a>00165 <span class="comment">/* x[n-N], x[n-N-1] are packed together to make state_in of type q31 */</span>
|
||||
<a name="l00166"></a>00166 <span class="comment">/* y[n-N], y[n-N-1] are packed together to make state_out of type q31 */</span>
|
||||
<a name="l00167"></a>00167 state_in = __PKHBT(in >> 16, state_in, 16);
|
||||
<a name="l00168"></a>00168 state_out = __PKHBT(out, state_out, 16);
|
||||
<a name="l00169"></a>00169
|
||||
<a name="l00170"></a>00170 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00171"></a>00171 sample--;
|
||||
<a name="l00172"></a>00172
|
||||
<a name="l00173"></a>00173 }
|
||||
<a name="l00174"></a>00174
|
||||
<a name="l00175"></a>00175 <span class="comment">/* If the blockSize is not a multiple of 2, compute any remaining output samples here. </span>
|
||||
<a name="l00176"></a>00176 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00177"></a>00177
|
||||
<a name="l00178"></a>00178 <span class="keywordflow">if</span>((blockSize & 0x1u) != 0u)
|
||||
<a name="l00179"></a>00179 {
|
||||
<a name="l00180"></a>00180 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00181"></a>00181 in = *pIn++;
|
||||
<a name="l00182"></a>00182
|
||||
<a name="l00183"></a>00183 <span class="comment">/* out = b0 * x[n] + 0 * 0 */</span>
|
||||
<a name="l00184"></a>00184 out = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) in *b0;
|
||||
<a name="l00185"></a>00185 <span class="comment">/* acc = b1 * x[n-1] + b2 * x[n-2] + out */</span>
|
||||
<a name="l00186"></a>00186 acc = __SMLALD(b1, state_in, out);
|
||||
<a name="l00187"></a>00187 <span class="comment">/* acc += a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00188"></a>00188 acc = __SMLALD(a1, state_out, acc);
|
||||
<a name="l00189"></a>00189
|
||||
<a name="l00190"></a>00190 <span class="comment">/* The result is converted from 3.29 to 1.31 if postShift = 1, and then saturation is applied */</span>
|
||||
<a name="l00191"></a>00191 out = __SSAT((acc >> shift), 16);
|
||||
<a name="l00192"></a>00192
|
||||
<a name="l00193"></a>00193 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00194"></a>00194 *pOut++ = (<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a>) out;
|
||||
<a name="l00195"></a>00195
|
||||
<a name="l00196"></a>00196 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00197"></a>00197 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00198"></a>00198 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00199"></a>00199 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00200"></a>00200 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00201"></a>00201 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00202"></a>00202 <span class="comment">/* x[n-N], x[n-N-1] are packed together to make state_in of type q31 */</span>
|
||||
<a name="l00203"></a>00203 <span class="comment">/* y[n-N], y[n-N-1] are packed together to make state_out of type q31 */</span>
|
||||
<a name="l00204"></a>00204 state_in = __PKHBT(in, state_in, 16);
|
||||
<a name="l00205"></a>00205 state_out = __PKHBT(out, state_out, 16);
|
||||
<a name="l00206"></a>00206
|
||||
<a name="l00207"></a>00207 }
|
||||
<a name="l00208"></a>00208
|
||||
<a name="l00209"></a>00209 <span class="comment">/* The first stage goes from the input wire to the output wire. */</span>
|
||||
<a name="l00210"></a>00210 <span class="comment">/* Subsequent numStages occur in-place in the output wire */</span>
|
||||
<a name="l00211"></a>00211 pIn = pDst;
|
||||
<a name="l00212"></a>00212
|
||||
<a name="l00213"></a>00213 <span class="comment">/* Reset the output pointer */</span>
|
||||
<a name="l00214"></a>00214 pOut = pDst;
|
||||
<a name="l00215"></a>00215
|
||||
<a name="l00216"></a>00216 <span class="comment">/* Store the updated state variables back into the state array */</span>
|
||||
<a name="l00217"></a>00217 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pState)++ = __PKHBT(state_in, (state_in >> 16), 16);
|
||||
<a name="l00218"></a>00218 *<a class="code" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248" title="definition to read/write two 16 bit values.">__SIMD32</a>(pState)++ = __PKHBT(state_out, (state_out >> 16), 16);
|
||||
<a name="l00219"></a>00219
|
||||
<a name="l00220"></a>00220 <span class="comment">/* Decrement the loop counter */</span>
|
||||
<a name="l00221"></a>00221 stage--;
|
||||
<a name="l00222"></a>00222
|
||||
<a name="l00223"></a>00223 } <span class="keywordflow">while</span>(stage > 0u);
|
||||
<a name="l00224"></a>00224 }
|
||||
<a name="l00225"></a>00225
|
||||
<a name="l00226"></a>00226
|
||||
</pre></div></div>
|
||||
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<h1>arm_biquad_cascade_df1_q31.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__biquad__cascade__df1__q31_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f1.html#ga27b0c54da702713976e5202d20b4473f">arm_biquad_cascade_df1_q31</a> (const <a class="el" href="structarm__biquad__casd__df1__inst__q31.html">arm_biquad_casd_df1_inst_q31</a> *S, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<h1>arm_biquad_cascade_df1_q31.c</h1> </div>
|
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<div class="contents">
|
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<a href="arm__biquad__cascade__df1__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df1_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Processing function for the </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* Q31 Biquad cascade filter </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* Initial version </span>
|
||||
<a name="l00032"></a>00032 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00033"></a>00033
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00066"></a><a class="code" href="group___biquad_cascade_d_f1.html#ga27b0c54da702713976e5202d20b4473f">00066</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f1.html#ga27b0c54da702713976e5202d20b4473f" title="Processing function for the Q31 Biquad cascade filter.">arm_biquad_cascade_df1_q31</a>(
|
||||
<a name="l00067"></a>00067 <span class="keyword">const</span> <a class="code" href="structarm__biquad__casd__df1__inst__q31.html" title="Instance structure for the Q31 Biquad cascade filter.">arm_biquad_casd_df1_inst_q31</a> * S,
|
||||
<a name="l00068"></a>00068 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrc,
|
||||
<a name="l00069"></a>00069 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pDst,
|
||||
<a name="l00070"></a>00070 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00071"></a>00071 {
|
||||
<a name="l00072"></a>00072 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pIn = pSrc; <span class="comment">/* input pointer initialization */</span>
|
||||
<a name="l00073"></a>00073 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pOut = pDst; <span class="comment">/* output pointer initialization */</span>
|
||||
<a name="l00074"></a>00074 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pState = S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a5dcf4727f58eb4e8e8b392508d8657bb">pState</a>; <span class="comment">/* pState pointer initialization */</span>
|
||||
<a name="l00075"></a>00075 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#aa62366c632f3b5305086f841f079dbd2">pCoeffs</a>; <span class="comment">/* coeff pointer initialization */</span>
|
||||
<a name="l00076"></a>00076 <a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a> acc; <span class="comment">/* accumulator */</span>
|
||||
<a name="l00077"></a>00077 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> Xn1, Xn2, Yn1, Yn2; <span class="comment">/* Filter state variables */</span>
|
||||
<a name="l00078"></a>00078 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> b0, b1, b2, a1, a2; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00079"></a>00079 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> Xn; <span class="comment">/* temporary input */</span>
|
||||
<a name="l00080"></a>00080 uint32_t shift = 32u - ((uint32_t) S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a636c7fbe09ec4bef0bc0a4b4e2151cbe">postShift</a> + 1u); <span class="comment">/* Shift to be applied to the output */</span>
|
||||
<a name="l00081"></a>00081 uint32_t sample, stage = S-><a class="code" href="structarm__biquad__casd__df1__inst__q31.html#a2c2b579f1df1d8273a5d9d945c27e1b2">numStages</a>; <span class="comment">/* loop counters */</span>
|
||||
<a name="l00082"></a>00082
|
||||
<a name="l00083"></a>00083
|
||||
<a name="l00084"></a>00084 <span class="keywordflow">do</span>
|
||||
<a name="l00085"></a>00085 {
|
||||
<a name="l00086"></a>00086 <span class="comment">/* Reading the coefficients */</span>
|
||||
<a name="l00087"></a>00087 b0 = *pCoeffs++;
|
||||
<a name="l00088"></a>00088 b1 = *pCoeffs++;
|
||||
<a name="l00089"></a>00089 b2 = *pCoeffs++;
|
||||
<a name="l00090"></a>00090 a1 = *pCoeffs++;
|
||||
<a name="l00091"></a>00091 a2 = *pCoeffs++;
|
||||
<a name="l00092"></a>00092
|
||||
<a name="l00093"></a>00093 <span class="comment">/* Reading the state values */</span>
|
||||
<a name="l00094"></a>00094 Xn1 = pState[0];
|
||||
<a name="l00095"></a>00095 Xn2 = pState[1];
|
||||
<a name="l00096"></a>00096 Yn1 = pState[2];
|
||||
<a name="l00097"></a>00097 Yn2 = pState[3];
|
||||
<a name="l00098"></a>00098
|
||||
<a name="l00099"></a>00099 <span class="comment">/* Apply loop unrolling and compute 4 output values simultaneously. */</span>
|
||||
<a name="l00100"></a>00100 <span class="comment">/* The variable acc hold output values that are being computed: </span>
|
||||
<a name="l00101"></a>00101 <span class="comment"> * </span>
|
||||
<a name="l00102"></a>00102 <span class="comment"> * acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] </span>
|
||||
<a name="l00103"></a>00103 <span class="comment"> */</span>
|
||||
<a name="l00104"></a>00104
|
||||
<a name="l00105"></a>00105 sample = blockSize >> 2u;
|
||||
<a name="l00106"></a>00106
|
||||
<a name="l00107"></a>00107 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00108"></a>00108 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00109"></a>00109 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00110"></a>00110 {
|
||||
<a name="l00111"></a>00111 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00112"></a>00112 Xn = *pIn++;
|
||||
<a name="l00113"></a>00113
|
||||
<a name="l00114"></a>00114 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00115"></a>00115
|
||||
<a name="l00116"></a>00116 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00117"></a>00117 acc = (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 *Xn;
|
||||
<a name="l00118"></a>00118 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00119"></a>00119 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b1 *Xn1;
|
||||
<a name="l00120"></a>00120 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00121"></a>00121 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b2 *Xn2;
|
||||
<a name="l00122"></a>00122 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00123"></a>00123 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a1 *Yn1;
|
||||
<a name="l00124"></a>00124 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00125"></a>00125 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 *Yn2;
|
||||
<a name="l00126"></a>00126
|
||||
<a name="l00127"></a>00127 <span class="comment">/* The result is converted to 1.31 , Yn2 variable is reused */</span>
|
||||
<a name="l00128"></a>00128 Yn2 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> shift);
|
||||
<a name="l00129"></a>00129
|
||||
<a name="l00130"></a>00130 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00131"></a>00131 *pOut++ = Yn2;
|
||||
<a name="l00132"></a>00132
|
||||
<a name="l00133"></a>00133 <span class="comment">/* Read the second input */</span>
|
||||
<a name="l00134"></a>00134 Xn2 = *pIn++;
|
||||
<a name="l00135"></a>00135
|
||||
<a name="l00136"></a>00136 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00137"></a>00137
|
||||
<a name="l00138"></a>00138 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00139"></a>00139 acc = (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 *Xn2;
|
||||
<a name="l00140"></a>00140 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00141"></a>00141 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b1 *Xn;
|
||||
<a name="l00142"></a>00142 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00143"></a>00143 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b2 *Xn1;
|
||||
<a name="l00144"></a>00144 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00145"></a>00145 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a1 *Yn2;
|
||||
<a name="l00146"></a>00146 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00147"></a>00147 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 *Yn1;
|
||||
<a name="l00148"></a>00148
|
||||
<a name="l00149"></a>00149
|
||||
<a name="l00150"></a>00150 <span class="comment">/* The result is converted to 1.31, Yn1 variable is reused */</span>
|
||||
<a name="l00151"></a>00151 Yn1 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> shift);
|
||||
<a name="l00152"></a>00152
|
||||
<a name="l00153"></a>00153 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00154"></a>00154 *pOut++ = Yn1;
|
||||
<a name="l00155"></a>00155
|
||||
<a name="l00156"></a>00156 <span class="comment">/* Read the third input */</span>
|
||||
<a name="l00157"></a>00157 Xn1 = *pIn++;
|
||||
<a name="l00158"></a>00158
|
||||
<a name="l00159"></a>00159 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00160"></a>00160
|
||||
<a name="l00161"></a>00161 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00162"></a>00162 acc = (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 *Xn1;
|
||||
<a name="l00163"></a>00163 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00164"></a>00164 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b1 *Xn2;
|
||||
<a name="l00165"></a>00165 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00166"></a>00166 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b2 *Xn;
|
||||
<a name="l00167"></a>00167 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00168"></a>00168 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a1 *Yn1;
|
||||
<a name="l00169"></a>00169 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00170"></a>00170 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 *Yn2;
|
||||
<a name="l00171"></a>00171
|
||||
<a name="l00172"></a>00172 <span class="comment">/* The result is converted to 1.31, Yn2 variable is reused */</span>
|
||||
<a name="l00173"></a>00173 Yn2 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> shift);
|
||||
<a name="l00174"></a>00174
|
||||
<a name="l00175"></a>00175 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00176"></a>00176 *pOut++ = Yn2;
|
||||
<a name="l00177"></a>00177
|
||||
<a name="l00178"></a>00178 <span class="comment">/* Read the forth input */</span>
|
||||
<a name="l00179"></a>00179 Xn = *pIn++;
|
||||
<a name="l00180"></a>00180
|
||||
<a name="l00181"></a>00181 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00182"></a>00182
|
||||
<a name="l00183"></a>00183 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00184"></a>00184 acc = (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 *Xn;
|
||||
<a name="l00185"></a>00185 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00186"></a>00186 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b1 *Xn1;
|
||||
<a name="l00187"></a>00187 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00188"></a>00188 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b2 *Xn2;
|
||||
<a name="l00189"></a>00189 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00190"></a>00190 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a1 *Yn2;
|
||||
<a name="l00191"></a>00191 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00192"></a>00192 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 *Yn1;
|
||||
<a name="l00193"></a>00193
|
||||
<a name="l00194"></a>00194 <span class="comment">/* The result is converted to 1.31, Yn1 variable is reused */</span>
|
||||
<a name="l00195"></a>00195 Yn1 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) (acc >> shift);
|
||||
<a name="l00196"></a>00196
|
||||
<a name="l00197"></a>00197 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00198"></a>00198 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00199"></a>00199 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00200"></a>00200 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00201"></a>00201 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00202"></a>00202 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00203"></a>00203 Xn2 = Xn1;
|
||||
<a name="l00204"></a>00204 Xn1 = Xn;
|
||||
<a name="l00205"></a>00205
|
||||
<a name="l00206"></a>00206 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00207"></a>00207 *pOut++ = Yn1;
|
||||
<a name="l00208"></a>00208
|
||||
<a name="l00209"></a>00209 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00210"></a>00210 sample--;
|
||||
<a name="l00211"></a>00211 }
|
||||
<a name="l00212"></a>00212
|
||||
<a name="l00213"></a>00213 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00214"></a>00214 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00215"></a>00215 sample = (blockSize & 0x3u);
|
||||
<a name="l00216"></a>00216
|
||||
<a name="l00217"></a>00217 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00218"></a>00218 {
|
||||
<a name="l00219"></a>00219 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00220"></a>00220 Xn = *pIn++;
|
||||
<a name="l00221"></a>00221
|
||||
<a name="l00222"></a>00222 <span class="comment">/* acc = b0 * x[n] + b1 * x[n-1] + b2 * x[n-2] + a1 * y[n-1] + a2 * y[n-2] */</span>
|
||||
<a name="l00223"></a>00223
|
||||
<a name="l00224"></a>00224 <span class="comment">/* acc = b0 * x[n] */</span>
|
||||
<a name="l00225"></a>00225 acc = (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b0 *Xn;
|
||||
<a name="l00226"></a>00226 <span class="comment">/* acc += b1 * x[n-1] */</span>
|
||||
<a name="l00227"></a>00227 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b1 *Xn1;
|
||||
<a name="l00228"></a>00228 <span class="comment">/* acc += b[2] * x[n-2] */</span>
|
||||
<a name="l00229"></a>00229 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) b2 *Xn2;
|
||||
<a name="l00230"></a>00230 <span class="comment">/* acc += a1 * y[n-1] */</span>
|
||||
<a name="l00231"></a>00231 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a1 *Yn1;
|
||||
<a name="l00232"></a>00232 <span class="comment">/* acc += a2 * y[n-2] */</span>
|
||||
<a name="l00233"></a>00233 acc += (<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) a2 *Yn2;
|
||||
<a name="l00234"></a>00234
|
||||
<a name="l00235"></a>00235 <span class="comment">/* The result is converted to 1.31 */</span>
|
||||
<a name="l00236"></a>00236 acc = acc >> shift;
|
||||
<a name="l00237"></a>00237
|
||||
<a name="l00238"></a>00238 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00239"></a>00239 <span class="comment">/* The states should be updated as: */</span>
|
||||
<a name="l00240"></a>00240 <span class="comment">/* Xn2 = Xn1 */</span>
|
||||
<a name="l00241"></a>00241 <span class="comment">/* Xn1 = Xn */</span>
|
||||
<a name="l00242"></a>00242 <span class="comment">/* Yn2 = Yn1 */</span>
|
||||
<a name="l00243"></a>00243 <span class="comment">/* Yn1 = acc */</span>
|
||||
<a name="l00244"></a>00244 Xn2 = Xn1;
|
||||
<a name="l00245"></a>00245 Xn1 = Xn;
|
||||
<a name="l00246"></a>00246 Yn2 = Yn1;
|
||||
<a name="l00247"></a>00247 Yn1 = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) acc;
|
||||
<a name="l00248"></a>00248
|
||||
<a name="l00249"></a>00249 <span class="comment">/* Store the output in the destination buffer. */</span>
|
||||
<a name="l00250"></a>00250 *pOut++ = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) acc;
|
||||
<a name="l00251"></a>00251
|
||||
<a name="l00252"></a>00252 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00253"></a>00253 sample--;
|
||||
<a name="l00254"></a>00254 }
|
||||
<a name="l00255"></a>00255
|
||||
<a name="l00256"></a>00256 <span class="comment">/* The first stage goes from the input buffer to the output buffer. */</span>
|
||||
<a name="l00257"></a>00257 <span class="comment">/* Subsequent stages occur in-place in the output buffer */</span>
|
||||
<a name="l00258"></a>00258 pIn = pDst;
|
||||
<a name="l00259"></a>00259
|
||||
<a name="l00260"></a>00260 <span class="comment">/* Reset to destination pointer */</span>
|
||||
<a name="l00261"></a>00261 pOut = pDst;
|
||||
<a name="l00262"></a>00262
|
||||
<a name="l00263"></a>00263 <span class="comment">/* Store the updated state variables back into the pState array */</span>
|
||||
<a name="l00264"></a>00264 *pState++ = Xn1;
|
||||
<a name="l00265"></a>00265 *pState++ = Xn2;
|
||||
<a name="l00266"></a>00266 *pState++ = Yn1;
|
||||
<a name="l00267"></a>00267 *pState++ = Yn2;
|
||||
<a name="l00268"></a>00268
|
||||
<a name="l00269"></a>00269 } <span class="keywordflow">while</span>(--stage);
|
||||
<a name="l00270"></a>00270 }
|
||||
<a name="l00271"></a>00271
|
||||
</pre></div></div>
|
||||
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<h1>arm_biquad_cascade_df2T_f32.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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<p><a href="arm__biquad__cascade__df2_t__f32_8c_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f2_t.html#ga646c25998bf35991c60299b1431460f7">arm_biquad_cascade_df2T_f32</a> (const <a class="el" href="structarm__biquad__cascade__df2_t__instance__f32.html">arm_biquad_cascade_df2T_instance_f32</a> *S, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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|
||||
<ul class="tablist">
|
||||
<li><a href="files.html"><span>File List</span></a></li>
|
||||
<li><a href="globals.html"><span>Globals</span></a></li>
|
||||
</ul>
|
||||
</div>
|
||||
<div class="header">
|
||||
<div class="headertitle">
|
||||
<h1>arm_biquad_cascade_df2T_f32.c</h1> </div>
|
||||
</div>
|
||||
<div class="contents">
|
||||
<a href="arm__biquad__cascade__df2_t__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df2T_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Processing function for the floating-point transposed </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* direct form II Biquad cascade filter. </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00030"></a>00030
|
||||
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00140"></a><a class="code" href="group___biquad_cascade_d_f2_t.html#ga646c25998bf35991c60299b1431460f7">00140</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f2_t.html#ga646c25998bf35991c60299b1431460f7" title="Processing function for the floating-point transposed direct form II Biquad cascade filter...">arm_biquad_cascade_df2T_f32</a>(
|
||||
<a name="l00141"></a>00141 <span class="keyword">const</span> <a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html" title="Instance structure for the floating-point transposed direct form II Biquad cascade filter...">arm_biquad_cascade_df2T_instance_f32</a> * S,
|
||||
<a name="l00142"></a>00142 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc,
|
||||
<a name="l00143"></a>00143 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pDst,
|
||||
<a name="l00144"></a>00144 uint32_t <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)
|
||||
<a name="l00145"></a>00145 {
|
||||
<a name="l00146"></a>00146
|
||||
<a name="l00147"></a>00147 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pIn = pSrc; <span class="comment">/* source pointer */</span>
|
||||
<a name="l00148"></a>00148 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pOut = pDst; <span class="comment">/* destination pointer */</span>
|
||||
<a name="l00149"></a>00149 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pState = S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a24d223addfd926a7177088cf2efe76b1">pState</a>; <span class="comment">/* State pointer */</span>
|
||||
<a name="l00150"></a>00150 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *pCoeffs = S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a49a24fe1b6ad3b0b26779c32d8d80b2e">pCoeffs</a>; <span class="comment">/* coefficient pointer */</span>
|
||||
<a name="l00151"></a>00151 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> acc0; <span class="comment">/* Simulates the accumulator */</span>
|
||||
<a name="l00152"></a>00152 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> b0, b1, b2, a1, a2; <span class="comment">/* Filter coefficients */</span>
|
||||
<a name="l00153"></a>00153 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> Xn; <span class="comment">/* temporary input */</span>
|
||||
<a name="l00154"></a>00154 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> d1, d2; <span class="comment">/* state variables */</span>
|
||||
<a name="l00155"></a>00155 uint32_t sample, stage = S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a4d17958c33c3d0a905f974bac50f033f">numStages</a>; <span class="comment">/* loop counters */</span>
|
||||
<a name="l00156"></a>00156
|
||||
<a name="l00157"></a>00157
|
||||
<a name="l00158"></a>00158 <span class="keywordflow">do</span>
|
||||
<a name="l00159"></a>00159 {
|
||||
<a name="l00160"></a>00160 <span class="comment">/* Reading the coefficients */</span>
|
||||
<a name="l00161"></a>00161 b0 = *pCoeffs++;
|
||||
<a name="l00162"></a>00162 b1 = *pCoeffs++;
|
||||
<a name="l00163"></a>00163 b2 = *pCoeffs++;
|
||||
<a name="l00164"></a>00164 a1 = *pCoeffs++;
|
||||
<a name="l00165"></a>00165 a2 = *pCoeffs++;
|
||||
<a name="l00166"></a>00166
|
||||
<a name="l00167"></a>00167 <span class="comment">/*Reading the state values */</span>
|
||||
<a name="l00168"></a>00168 d1 = pState[0];
|
||||
<a name="l00169"></a>00169 d2 = pState[1];
|
||||
<a name="l00170"></a>00170
|
||||
<a name="l00171"></a>00171 <span class="comment">/* Apply loop unrolling and compute 4 output values simultaneously. */</span>
|
||||
<a name="l00172"></a>00172 sample = blockSize >> 2u;
|
||||
<a name="l00173"></a>00173
|
||||
<a name="l00174"></a>00174 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span>
|
||||
<a name="l00175"></a>00175 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span>
|
||||
<a name="l00176"></a>00176 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00177"></a>00177 {
|
||||
<a name="l00178"></a>00178 <span class="comment">/* Read the first input */</span>
|
||||
<a name="l00179"></a>00179 Xn = *pIn++;
|
||||
<a name="l00180"></a>00180
|
||||
<a name="l00181"></a>00181 <span class="comment">/* y[n] = b0 * x[n] + d1 */</span>
|
||||
<a name="l00182"></a>00182 acc0 = (b0 * Xn) + d1;
|
||||
<a name="l00183"></a>00183
|
||||
<a name="l00184"></a>00184 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00185"></a>00185 *pOut++ = acc0;
|
||||
<a name="l00186"></a>00186
|
||||
<a name="l00187"></a>00187 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00188"></a>00188 <span class="comment">/* d1 = b1 * x[n] + a1 * y[n] + d2 */</span>
|
||||
<a name="l00189"></a>00189 d1 = ((b1 * Xn) + (a1 * acc0)) + d2;
|
||||
<a name="l00190"></a>00190
|
||||
<a name="l00191"></a>00191 <span class="comment">/* d2 = b2 * x[n] + a2 * y[n] */</span>
|
||||
<a name="l00192"></a>00192 d2 = (b2 * Xn) + (a2 * acc0);
|
||||
<a name="l00193"></a>00193
|
||||
<a name="l00194"></a>00194 <span class="comment">/* Read the second input */</span>
|
||||
<a name="l00195"></a>00195 Xn = *pIn++;
|
||||
<a name="l00196"></a>00196
|
||||
<a name="l00197"></a>00197 <span class="comment">/* y[n] = b0 * x[n] + d1 */</span>
|
||||
<a name="l00198"></a>00198 acc0 = (b0 * Xn) + d1;
|
||||
<a name="l00199"></a>00199
|
||||
<a name="l00200"></a>00200 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00201"></a>00201 *pOut++ = acc0;
|
||||
<a name="l00202"></a>00202
|
||||
<a name="l00203"></a>00203 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00204"></a>00204 <span class="comment">/* d1 = b1 * x[n] + a1 * y[n] + d2 */</span>
|
||||
<a name="l00205"></a>00205 d1 = ((b1 * Xn) + (a1 * acc0)) + d2;
|
||||
<a name="l00206"></a>00206
|
||||
<a name="l00207"></a>00207 <span class="comment">/* d2 = b2 * x[n] + a2 * y[n] */</span>
|
||||
<a name="l00208"></a>00208 d2 = (b2 * Xn) + (a2 * acc0);
|
||||
<a name="l00209"></a>00209
|
||||
<a name="l00210"></a>00210 <span class="comment">/* Read the third input */</span>
|
||||
<a name="l00211"></a>00211 Xn = *pIn++;
|
||||
<a name="l00212"></a>00212
|
||||
<a name="l00213"></a>00213 <span class="comment">/* y[n] = b0 * x[n] + d1 */</span>
|
||||
<a name="l00214"></a>00214 acc0 = (b0 * Xn) + d1;
|
||||
<a name="l00215"></a>00215
|
||||
<a name="l00216"></a>00216 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00217"></a>00217 *pOut++ = acc0;
|
||||
<a name="l00218"></a>00218
|
||||
<a name="l00219"></a>00219 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00220"></a>00220 <span class="comment">/* d1 = b1 * x[n] + a1 * y[n] + d2 */</span>
|
||||
<a name="l00221"></a>00221 d1 = ((b1 * Xn) + (a1 * acc0)) + d2;
|
||||
<a name="l00222"></a>00222
|
||||
<a name="l00223"></a>00223 <span class="comment">/* d2 = b2 * x[n] + a2 * y[n] */</span>
|
||||
<a name="l00224"></a>00224 d2 = (b2 * Xn) + (a2 * acc0);
|
||||
<a name="l00225"></a>00225
|
||||
<a name="l00226"></a>00226 <span class="comment">/* Read the fourth input */</span>
|
||||
<a name="l00227"></a>00227 Xn = *pIn++;
|
||||
<a name="l00228"></a>00228
|
||||
<a name="l00229"></a>00229 <span class="comment">/* y[n] = b0 * x[n] + d1 */</span>
|
||||
<a name="l00230"></a>00230 acc0 = (b0 * Xn) + d1;
|
||||
<a name="l00231"></a>00231
|
||||
<a name="l00232"></a>00232 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00233"></a>00233 *pOut++ = acc0;
|
||||
<a name="l00234"></a>00234
|
||||
<a name="l00235"></a>00235 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00236"></a>00236 <span class="comment">/* d1 = b1 * x[n] + a1 * y[n] + d2 */</span>
|
||||
<a name="l00237"></a>00237 d1 = (b1 * Xn) + (a1 * acc0) + d2;
|
||||
<a name="l00238"></a>00238
|
||||
<a name="l00239"></a>00239 <span class="comment">/* d2 = b2 * x[n] + a2 * y[n] */</span>
|
||||
<a name="l00240"></a>00240 d2 = (b2 * Xn) + (a2 * acc0);
|
||||
<a name="l00241"></a>00241
|
||||
<a name="l00242"></a>00242 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00243"></a>00243 sample--;
|
||||
<a name="l00244"></a>00244
|
||||
<a name="l00245"></a>00245 }
|
||||
<a name="l00246"></a>00246
|
||||
<a name="l00247"></a>00247 <span class="comment">/* If the blockSize is not a multiple of 4, compute any remaining output samples here. </span>
|
||||
<a name="l00248"></a>00248 <span class="comment"> ** No loop unrolling is used. */</span>
|
||||
<a name="l00249"></a>00249 sample = blockSize & 0x3u;
|
||||
<a name="l00250"></a>00250
|
||||
<a name="l00251"></a>00251 <span class="keywordflow">while</span>(sample > 0u)
|
||||
<a name="l00252"></a>00252 {
|
||||
<a name="l00253"></a>00253 <span class="comment">/* Read the input */</span>
|
||||
<a name="l00254"></a>00254 Xn = *pIn++;
|
||||
<a name="l00255"></a>00255
|
||||
<a name="l00256"></a>00256 <span class="comment">/* y[n] = b0 * x[n] + d1 */</span>
|
||||
<a name="l00257"></a>00257 acc0 = (b0 * Xn) + d1;
|
||||
<a name="l00258"></a>00258
|
||||
<a name="l00259"></a>00259 <span class="comment">/* Store the result in the accumulator in the destination buffer. */</span>
|
||||
<a name="l00260"></a>00260 *pOut++ = acc0;
|
||||
<a name="l00261"></a>00261
|
||||
<a name="l00262"></a>00262 <span class="comment">/* Every time after the output is computed state should be updated. */</span>
|
||||
<a name="l00263"></a>00263 <span class="comment">/* d1 = b1 * x[n] + a1 * y[n] + d2 */</span>
|
||||
<a name="l00264"></a>00264 d1 = ((b1 * Xn) + (a1 * acc0)) + d2;
|
||||
<a name="l00265"></a>00265
|
||||
<a name="l00266"></a>00266 <span class="comment">/* d2 = b2 * x[n] + a2 * y[n] */</span>
|
||||
<a name="l00267"></a>00267 d2 = (b2 * Xn) + (a2 * acc0);
|
||||
<a name="l00268"></a>00268
|
||||
<a name="l00269"></a>00269 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00270"></a>00270 sample--;
|
||||
<a name="l00271"></a>00271 }
|
||||
<a name="l00272"></a>00272
|
||||
<a name="l00273"></a>00273 <span class="comment">/* Store the updated state variables back into the state array */</span>
|
||||
<a name="l00274"></a>00274 *pState++ = d1;
|
||||
<a name="l00275"></a>00275 *pState++ = d2;
|
||||
<a name="l00276"></a>00276
|
||||
<a name="l00277"></a>00277 <span class="comment">/* The current stage input is given as the output to the next stage */</span>
|
||||
<a name="l00278"></a>00278 pIn = pDst;
|
||||
<a name="l00279"></a>00279
|
||||
<a name="l00280"></a>00280 <span class="comment">/*Reset the output working pointer */</span>
|
||||
<a name="l00281"></a>00281 pOut = pDst;
|
||||
<a name="l00282"></a>00282
|
||||
<a name="l00283"></a>00283 <span class="comment">/* decrement the loop counter */</span>
|
||||
<a name="l00284"></a>00284 stage--;
|
||||
<a name="l00285"></a>00285
|
||||
<a name="l00286"></a>00286 } <span class="keywordflow">while</span>(stage > 0u);
|
||||
<a name="l00287"></a>00287
|
||||
<a name="l00288"></a>00288
|
||||
<a name="l00289"></a>00289 }
|
||||
<a name="l00290"></a>00290
|
||||
<a name="l00291"></a>00291
|
||||
</pre></div></div>
|
||||
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___biquad_cascade_d_f2_t.html#ga70eaddf317a4a8bde6bd6a97df67fedd">arm_biquad_cascade_df2T_init_f32</a> (<a class="el" href="structarm__biquad__cascade__df2_t__instance__f32.html">arm_biquad_cascade_df2T_instance_f32</a> *S, uint8_t numStages, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoeffs, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pState)</td></tr>
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<a href="arm__biquad__cascade__df2_t__init__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*----------------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df2T_init_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Initialization function for the floating-point transposed </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* direct form II Biquad cascade filter. </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.7 2010/06/10 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* Misra-C changes done </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* ---------------------------------------------------------------------------*/</span>
|
||||
<a name="l00030"></a>00030
|
||||
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00070"></a><a class="code" href="group___biquad_cascade_d_f2_t.html#ga70eaddf317a4a8bde6bd6a97df67fedd">00070</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f2_t.html#ga70eaddf317a4a8bde6bd6a97df67fedd" title="Initialization function for the floating-point transposed direct form II Biquad cascade filter...">arm_biquad_cascade_df2T_init_f32</a>(
|
||||
<a name="l00071"></a>00071 <a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html" title="Instance structure for the floating-point transposed direct form II Biquad cascade filter...">arm_biquad_cascade_df2T_instance_f32</a> * S,
|
||||
<a name="l00072"></a>00072 uint8_t numStages,
|
||||
<a name="l00073"></a>00073 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pCoeffs,
|
||||
<a name="l00074"></a>00074 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pState)
|
||||
<a name="l00075"></a>00075 {
|
||||
<a name="l00076"></a>00076 <span class="comment">/* Assign filter stages */</span>
|
||||
<a name="l00077"></a>00077 S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a4d17958c33c3d0a905f974bac50f033f">numStages</a> = numStages;
|
||||
<a name="l00078"></a>00078
|
||||
<a name="l00079"></a>00079 <span class="comment">/* Assign coefficient pointer */</span>
|
||||
<a name="l00080"></a>00080 S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a49a24fe1b6ad3b0b26779c32d8d80b2e">pCoeffs</a> = pCoeffs;
|
||||
<a name="l00081"></a>00081
|
||||
<a name="l00082"></a>00082 <span class="comment">/* Clear state buffer and size is always 2 * numStages */</span>
|
||||
<a name="l00083"></a>00083 memset(pState, 0, (2u * (uint32_t) numStages) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>));
|
||||
<a name="l00084"></a>00084
|
||||
<a name="l00085"></a>00085 <span class="comment">/* Assign state pointer */</span>
|
||||
<a name="l00086"></a>00086 S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a24d223addfd926a7177088cf2efe76b1">pState</a> = pState;
|
||||
<a name="l00087"></a>00087 }
|
||||
<a name="l00088"></a>00088
|
||||
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<h1>arm_cfft_radix4_f32.c File Reference</h1> </div>
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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|
||||
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32</a> (const <a class="el" href="structarm__cfft__radix4__instance__f32.html">arm_cfft_radix4_instance_f32</a> *S, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc)</td></tr>
|
||||
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__f32_8c.html#ae239ddf995d1607115f9e84d5c069b9c">arm_radix4_butterfly_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t fftLen, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoef, uint16_t twidCoefModifier)</td></tr>
|
||||
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__f32_8c.html#a2a78df6e4bbf080624f2b6349224ec93">arm_radix4_butterfly_inverse_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t fftLen, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoef, uint16_t twidCoefModifier, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> onebyfftLen)</td></tr>
|
||||
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__f32_8c.html#a3d4062fdfa6aaa3f51f41cab868e508b">arm_bitreversal_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t <a class="el" href="arm__fft__bin__example__f32_8c.html#a9b500899c581f6df3ffc0a9f3a9ef6aa">fftSize</a>, uint16_t bitRevFactor, uint16_t *pBitRevTab)</td></tr>
|
||||
</table>
|
||||
<hr/><h2>Function Documentation</h2>
|
||||
<a class="anchor" id="ae239ddf995d1607115f9e84d5c069b9c"></a><!-- doxytag: member="arm_cfft_radix4_f32.c::arm_radix4_butterfly_f32" ref="ae239ddf995d1607115f9e84d5c069b9c" args="(float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier)" -->
|
||||
<div class="memitem">
|
||||
<div class="memproto">
|
||||
<table class="memname">
|
||||
<tr>
|
||||
<td class="memname">void arm_radix4_butterfly_f32 </td>
|
||||
<td>(</td>
|
||||
<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
|
||||
<td class="paramname"> <em>pSrc</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t </td>
|
||||
<td class="paramname"> <em>fftLen</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
|
||||
<td class="paramname"> <em>pCoef</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t </td>
|
||||
<td class="paramname"> <em>twidCoefModifier</em> </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td></td>
|
||||
<td>)</td>
|
||||
<td></td><td></td>
|
||||
</tr>
|
||||
</table>
|
||||
</div>
|
||||
<div class="memdoc">
|
||||
|
||||
<p>Core function for the floating-point CFFT butterfly process. </p>
|
||||
<p>end of CFFT_CIFFT group </p>
|
||||
|
||||
<p>Definition at line <a class="el" href="arm__cfft__radix4__f32_8c_source.html#l00220">220</a> of file <a class="el" href="arm__cfft__radix4__f32_8c_source.html">arm_cfft_radix4_f32.c</a>.</p>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
<a class="anchor" id="a2a78df6e4bbf080624f2b6349224ec93"></a><!-- doxytag: member="arm_cfft_radix4_f32.c::arm_radix4_butterfly_inverse_f32" ref="a2a78df6e4bbf080624f2b6349224ec93" args="(float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier, float32_t onebyfftLen)" -->
|
||||
<div class="memitem">
|
||||
<div class="memproto">
|
||||
<table class="memname">
|
||||
<tr>
|
||||
<td class="memname">void arm_radix4_butterfly_inverse_f32 </td>
|
||||
<td>(</td>
|
||||
<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
|
||||
<td class="paramname"> <em>pSrc</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t </td>
|
||||
<td class="paramname"> <em>fftLen</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
|
||||
<td class="paramname"> <em>pCoef</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t </td>
|
||||
<td class="paramname"> <em>twidCoefModifier</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td>
|
||||
<td class="paramname"> <em>onebyfftLen</em> </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td></td>
|
||||
<td>)</td>
|
||||
<td></td><td></td>
|
||||
</tr>
|
||||
</table>
|
||||
</div>
|
||||
<div class="memdoc">
|
||||
|
||||
<p>Core function for the floating-point CIFFT butterfly process. </p>
|
||||
<dl><dt><b>Parameters:</b></dt><dd>
|
||||
<table class="params">
|
||||
<tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of floating-point data type. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">onebyfftLen</td><td>value of 1/fftLen. </td></tr>
|
||||
</table>
|
||||
</dd>
|
||||
</dl>
|
||||
<dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
|
||||
|
||||
<p>Definition at line <a class="el" href="arm__cfft__radix4__f32_8c_source.html#l00541">541</a> of file <a class="el" href="arm__cfft__radix4__f32_8c_source.html">arm_cfft_radix4_f32.c</a>.</p>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
<a class="anchor" id="a3d4062fdfa6aaa3f51f41cab868e508b"></a><!-- doxytag: member="arm_cfft_radix4_f32.c::arm_bitreversal_f32" ref="a3d4062fdfa6aaa3f51f41cab868e508b" args="(float32_t *pSrc, uint16_t fftSize, uint16_t bitRevFactor, uint16_t *pBitRevTab)" -->
|
||||
<div class="memitem">
|
||||
<div class="memproto">
|
||||
<table class="memname">
|
||||
<tr>
|
||||
<td class="memname">void arm_bitreversal_f32 </td>
|
||||
<td>(</td>
|
||||
<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
|
||||
<td class="paramname"> <em>pSrc</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t </td>
|
||||
<td class="paramname"> <em>fftSize</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t </td>
|
||||
<td class="paramname"> <em>bitRevFactor</em>, </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="paramkey"></td>
|
||||
<td></td>
|
||||
<td class="paramtype">uint16_t * </td>
|
||||
<td class="paramname"> <em>pBitRevTab</em> </td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td></td>
|
||||
<td>)</td>
|
||||
<td></td><td></td>
|
||||
</tr>
|
||||
</table>
|
||||
</div>
|
||||
<div class="memdoc">
|
||||
|
||||
<p>In-place bit reversal function. </p>
|
||||
<dl><dt><b>Parameters:</b></dt><dd>
|
||||
<table class="params">
|
||||
<tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of floating-point data type. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">fftSize</td><td>length of the FFT. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">bitRevFactor</td><td>bit reversal modifier that supports different size FFTs with the same bit reversal table. </td></tr>
|
||||
<tr><td class="paramdir">[in]</td><td class="paramname">*pBitRevTab</td><td>points to the bit reversal table. </td></tr>
|
||||
</table>
|
||||
</dd>
|
||||
</dl>
|
||||
<dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
|
||||
|
||||
<p>Definition at line <a class="el" href="arm__cfft__radix4__f32_8c_source.html#l00859">859</a> of file <a class="el" href="arm__cfft__radix4__f32_8c_source.html">arm_cfft_radix4_f32.c</a>.</p>
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<h1>arm_cfft_radix4_f32.c</h1> </div>
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<div class="contents">
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||||
<a href="arm__cfft__radix4__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_cfft_radix4_f32.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Radix-4 Decimation in Frequency CFFT & CIFFT Floating point processing function </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* </span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
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||||
<a name="l00017"></a>00017 <span class="comment">* </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* Initial version </span>
|
||||
<a name="l00032"></a>00032 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00033"></a>00033
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00174"></a><a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">00174</a> <span class="keywordtype">void</span> <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26" title="Processing function for the floating-point CFFT/CIFFT.">arm_cfft_radix4_f32</a>(
|
||||
<a name="l00175"></a>00175 <span class="keyword">const</span> <a class="code" href="structarm__cfft__radix4__instance__f32.html" title="Instance structure for the floating-point CFFT/CIFFT function.">arm_cfft_radix4_instance_f32</a> * S,
|
||||
<a name="l00176"></a>00176 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc)
|
||||
<a name="l00177"></a>00177 {
|
||||
<a name="l00178"></a>00178
|
||||
<a name="l00179"></a>00179 <span class="keywordflow">if</span>(S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a25d1da64dd6487c291f04d226f9acc66">ifftFlag</a> == 1u)
|
||||
<a name="l00180"></a>00180 {
|
||||
<a name="l00181"></a>00181 <span class="comment">/* Complex IFFT radix-4 */</span>
|
||||
<a name="l00182"></a>00182 <a class="code" href="arm__cfft__radix4__f32_8c.html#a2a78df6e4bbf080624f2b6349224ec93" title="Core function for the floating-point CIFFT butterfly process.">arm_radix4_butterfly_inverse_f32</a>(pSrc, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a7e6a6d290ce158ce9a15a45e364b021a">fftLen</a>, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a14860c7544911702ca1fa0bf78204ef3">pTwiddle</a>,
|
||||
<a name="l00183"></a>00183 S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#abe31ea2157dfa233e389cdfd3b9993ee">twidCoefModifier</a>, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#ab9eed39e40b8d7c16381fbccf84467cd">onebyfftLen</a>);
|
||||
<a name="l00184"></a>00184 }
|
||||
<a name="l00185"></a>00185 <span class="keywordflow">else</span>
|
||||
<a name="l00186"></a>00186 {
|
||||
<a name="l00187"></a>00187 <span class="comment">/* Complex FFT radix-4 */</span>
|
||||
<a name="l00188"></a>00188 <a class="code" href="arm__cfft__radix4__f32_8c.html#ae239ddf995d1607115f9e84d5c069b9c" title="Core function for the floating-point CFFT butterfly process.">arm_radix4_butterfly_f32</a>(pSrc, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a7e6a6d290ce158ce9a15a45e364b021a">fftLen</a>, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a14860c7544911702ca1fa0bf78204ef3">pTwiddle</a>,
|
||||
<a name="l00189"></a>00189 S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#abe31ea2157dfa233e389cdfd3b9993ee">twidCoefModifier</a>);
|
||||
<a name="l00190"></a>00190 }
|
||||
<a name="l00191"></a>00191
|
||||
<a name="l00192"></a>00192 <span class="keywordflow">if</span>(S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#ac10927a1620195a88649ce63dab66120">bitReverseFlag</a> == 1u)
|
||||
<a name="l00193"></a>00193 {
|
||||
<a name="l00194"></a>00194 <span class="comment">/* Bit Reversal */</span>
|
||||
<a name="l00195"></a>00195 <a class="code" href="arm__cfft__radix4__f32_8c.html#a3d4062fdfa6aaa3f51f41cab868e508b" title="In-place bit reversal function.">arm_bitreversal_f32</a>(pSrc, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a7e6a6d290ce158ce9a15a45e364b021a">fftLen</a>, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#acc8cb18a8b901b8321ab9d86491e41a3">bitRevFactor</a>, S-><a class="code" href="structarm__cfft__radix4__instance__f32.html#a8da0d2ca69749fde8cbb95caeac6fe6a">pBitRevTable</a>);
|
||||
<a name="l00196"></a>00196 }
|
||||
<a name="l00197"></a>00197
|
||||
<a name="l00198"></a>00198 }
|
||||
<a name="l00199"></a>00199
|
||||
<a name="l00200"></a>00200
|
||||
<a name="l00207"></a>00207 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00208"></a>00208 <span class="comment">** Internal helper function used by the FFTs </span>
|
||||
<a name="l00209"></a>00209 <span class="comment">** ------------------------------------------------------------------- */</span>
|
||||
<a name="l00210"></a>00210
|
||||
<a name="l00211"></a>00211 <span class="comment">/* </span>
|
||||
<a name="l00212"></a>00212 <span class="comment"> * @brief Core function for the floating-point CFFT butterfly process. </span>
|
||||
<a name="l00213"></a>00213 <span class="comment"> * @param[in, out] *pSrc points to the in-place buffer of floating-point data type. </span>
|
||||
<a name="l00214"></a>00214 <span class="comment"> * @param[in] fftLen length of the FFT. </span>
|
||||
<a name="l00215"></a>00215 <span class="comment"> * @param[in] *pCoef points to the twiddle coefficient buffer. </span>
|
||||
<a name="l00216"></a>00216 <span class="comment"> * @param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </span>
|
||||
<a name="l00217"></a>00217 <span class="comment"> * @return none. </span>
|
||||
<a name="l00218"></a>00218 <span class="comment"> */</span>
|
||||
<a name="l00219"></a>00219
|
||||
<a name="l00220"></a><a class="code" href="arm__math_8h.html#ae239ddf995d1607115f9e84d5c069b9c">00220</a> <span class="keywordtype">void</span> <a class="code" href="arm__cfft__radix4__f32_8c.html#ae239ddf995d1607115f9e84d5c069b9c" title="Core function for the floating-point CFFT butterfly process.">arm_radix4_butterfly_f32</a>(
|
||||
<a name="l00221"></a>00221 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc,
|
||||
<a name="l00222"></a>00222 uint16_t fftLen,
|
||||
<a name="l00223"></a>00223 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pCoef,
|
||||
<a name="l00224"></a>00224 uint16_t twidCoefModifier)
|
||||
<a name="l00225"></a>00225 {
|
||||
<a name="l00226"></a>00226
|
||||
<a name="l00227"></a>00227 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> co1, co2, co3, si1, si2, si3;
|
||||
<a name="l00228"></a>00228 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> t1, t2, r1, r2, s1, s2;
|
||||
<a name="l00229"></a>00229 uint32_t ia1, ia2, ia3;
|
||||
<a name="l00230"></a>00230 uint32_t i0, i1, i2, i3;
|
||||
<a name="l00231"></a>00231 uint32_t n1, n2, j, k;
|
||||
<a name="l00232"></a>00232
|
||||
<a name="l00233"></a>00233 <span class="comment">/* Initializations for the first stage */</span>
|
||||
<a name="l00234"></a>00234 n2 = fftLen;
|
||||
<a name="l00235"></a>00235 n1 = n2;
|
||||
<a name="l00236"></a>00236
|
||||
<a name="l00237"></a>00237 <span class="comment">/* n2 = fftLen/4 */</span>
|
||||
<a name="l00238"></a>00238 n2 >>= 2u;
|
||||
<a name="l00239"></a>00239 i0 = 0u;
|
||||
<a name="l00240"></a>00240 ia1 = 0u;
|
||||
<a name="l00241"></a>00241
|
||||
<a name="l00242"></a>00242 j = n2;
|
||||
<a name="l00243"></a>00243
|
||||
<a name="l00244"></a>00244 <span class="comment">/* Calculation of first stage */</span>
|
||||
<a name="l00245"></a>00245 <span class="keywordflow">do</span>
|
||||
<a name="l00246"></a>00246 {
|
||||
<a name="l00247"></a>00247 <span class="comment">/* index calculation for the input as, */</span>
|
||||
<a name="l00248"></a>00248 <span class="comment">/* pSrc[i0 + 0], pSrc[i0 + fftLen/4], pSrc[i0 + fftLen/2], pSrc[i0 + 3fftLen/4] */</span>
|
||||
<a name="l00249"></a>00249 i1 = i0 + n2;
|
||||
<a name="l00250"></a>00250 i2 = i1 + n2;
|
||||
<a name="l00251"></a>00251 i3 = i2 + n2;
|
||||
<a name="l00252"></a>00252
|
||||
<a name="l00253"></a>00253 <span class="comment">/* Butterfly implementation */</span>
|
||||
<a name="l00254"></a>00254
|
||||
<a name="l00255"></a>00255 <span class="comment">/* xa + xc */</span>
|
||||
<a name="l00256"></a>00256 r1 = pSrc[(2u * i0)] + pSrc[(2u * i2)];
|
||||
<a name="l00257"></a>00257
|
||||
<a name="l00258"></a>00258 <span class="comment">/* xa - xc */</span>
|
||||
<a name="l00259"></a>00259 r2 = pSrc[2u * i0] - pSrc[2u * i2];
|
||||
<a name="l00260"></a>00260
|
||||
<a name="l00261"></a>00261 <span class="comment">/* ya + yc */</span>
|
||||
<a name="l00262"></a>00262 s1 = pSrc[(2u * i0) + 1u] + pSrc[(2u * i2) + 1u];
|
||||
<a name="l00263"></a>00263
|
||||
<a name="l00264"></a>00264 <span class="comment">/* ya - yc */</span>
|
||||
<a name="l00265"></a>00265 s2 = pSrc[(2u * i0) + 1u] - pSrc[(2u * i2) + 1u];
|
||||
<a name="l00266"></a>00266
|
||||
<a name="l00267"></a>00267 <span class="comment">/* xb + xd */</span>
|
||||
<a name="l00268"></a>00268 t1 = pSrc[2u * i1] + pSrc[2u * i3];
|
||||
<a name="l00269"></a>00269
|
||||
<a name="l00270"></a>00270 <span class="comment">/* xa' = xa + xb + xc + xd */</span>
|
||||
<a name="l00271"></a>00271 pSrc[2u * i0] = r1 + t1;
|
||||
<a name="l00272"></a>00272
|
||||
<a name="l00273"></a>00273 <span class="comment">/* (xa + xc) - (xb + xd) */</span>
|
||||
<a name="l00274"></a>00274 r1 = r1 - t1;
|
||||
<a name="l00275"></a>00275
|
||||
<a name="l00276"></a>00276 <span class="comment">/* yb + yd */</span>
|
||||
<a name="l00277"></a>00277 t2 = pSrc[(2u * i1) + 1u] + pSrc[(2u * i3) + 1u];
|
||||
<a name="l00278"></a>00278
|
||||
<a name="l00279"></a>00279 <span class="comment">/* ya' = ya + yb + yc + yd */</span>
|
||||
<a name="l00280"></a>00280 pSrc[(2u * i0) + 1u] = s1 + t2;
|
||||
<a name="l00281"></a>00281
|
||||
<a name="l00282"></a>00282 <span class="comment">/* (ya + yc) - (yb + yd) */</span>
|
||||
<a name="l00283"></a>00283 s1 = s1 - t2;
|
||||
<a name="l00284"></a>00284
|
||||
<a name="l00285"></a>00285 <span class="comment">/* yb - yd */</span>
|
||||
<a name="l00286"></a>00286 t1 = pSrc[(2u * i1) + 1u] - pSrc[(2u * i3) + 1u];
|
||||
<a name="l00287"></a>00287
|
||||
<a name="l00288"></a>00288 <span class="comment">/* xb - xd */</span>
|
||||
<a name="l00289"></a>00289 t2 = pSrc[2u * i1] - pSrc[2u * i3];
|
||||
<a name="l00290"></a>00290
|
||||
<a name="l00291"></a>00291 <span class="comment">/* index calculation for the coefficients */</span>
|
||||
<a name="l00292"></a>00292 ia2 = ia1 + ia1;
|
||||
<a name="l00293"></a>00293 co2 = pCoef[ia2 * 2u];
|
||||
<a name="l00294"></a>00294 si2 = pCoef[(ia2 * 2u) + 1u];
|
||||
<a name="l00295"></a>00295
|
||||
<a name="l00296"></a>00296 <span class="comment">/* xc' = (xa-xb+xc-xd)co2 + (ya-yb+yc-yd)(si2) */</span>
|
||||
<a name="l00297"></a>00297 pSrc[2u * i1] = (r1 * co2) + (s1 * si2);
|
||||
<a name="l00298"></a>00298
|
||||
<a name="l00299"></a>00299 <span class="comment">/* yc' = (ya-yb+yc-yd)co2 - (xa-xb+xc-xd)(si2) */</span>
|
||||
<a name="l00300"></a>00300 pSrc[(2u * i1) + 1u] = (s1 * co2) - (r1 * si2);
|
||||
<a name="l00301"></a>00301
|
||||
<a name="l00302"></a>00302 <span class="comment">/* (xa - xc) + (yb - yd) */</span>
|
||||
<a name="l00303"></a>00303 r1 = r2 + t1;
|
||||
<a name="l00304"></a>00304
|
||||
<a name="l00305"></a>00305 <span class="comment">/* (xa - xc) - (yb - yd) */</span>
|
||||
<a name="l00306"></a>00306 r2 = r2 - t1;
|
||||
<a name="l00307"></a>00307
|
||||
<a name="l00308"></a>00308 <span class="comment">/* (ya - yc) - (xb - xd) */</span>
|
||||
<a name="l00309"></a>00309 s1 = s2 - t2;
|
||||
<a name="l00310"></a>00310
|
||||
<a name="l00311"></a>00311 <span class="comment">/* (ya - yc) + (xb - xd) */</span>
|
||||
<a name="l00312"></a>00312 s2 = s2 + t2;
|
||||
<a name="l00313"></a>00313
|
||||
<a name="l00314"></a>00314 co1 = pCoef[ia1 * 2u];
|
||||
<a name="l00315"></a>00315 si1 = pCoef[(ia1 * 2u) + 1u];
|
||||
<a name="l00316"></a>00316
|
||||
<a name="l00317"></a>00317 <span class="comment">/* xb' = (xa+yb-xc-yd)co1 + (ya-xb-yc+xd)(si1) */</span>
|
||||
<a name="l00318"></a>00318 pSrc[2u * i2] = (r1 * co1) + (s1 * si1);
|
||||
<a name="l00319"></a>00319
|
||||
<a name="l00320"></a>00320 <span class="comment">/* yb' = (ya-xb-yc+xd)co1 - (xa+yb-xc-yd)(si1) */</span>
|
||||
<a name="l00321"></a>00321 pSrc[(2u * i2) + 1u] = (s1 * co1) - (r1 * si1);
|
||||
<a name="l00322"></a>00322
|
||||
<a name="l00323"></a>00323 <span class="comment">/* index calculation for the coefficients */</span>
|
||||
<a name="l00324"></a>00324 ia3 = ia2 + ia1;
|
||||
<a name="l00325"></a>00325 co3 = pCoef[ia3 * 2u];
|
||||
<a name="l00326"></a>00326 si3 = pCoef[(ia3 * 2u) + 1u];
|
||||
<a name="l00327"></a>00327
|
||||
<a name="l00328"></a>00328
|
||||
<a name="l00329"></a>00329 <span class="comment">/* xd' = (xa-yb-xc+yd)co3 + (ya+xb-yc-xd)(si3) */</span>
|
||||
<a name="l00330"></a>00330 pSrc[2u * i3] = (r2 * co3) + (s2 * si3);
|
||||
<a name="l00331"></a>00331
|
||||
<a name="l00332"></a>00332 <span class="comment">/* yd' = (ya+xb-yc-xd)co3 - (xa-yb-xc+yd)(si3) */</span>
|
||||
<a name="l00333"></a>00333 pSrc[(2u * i3) + 1u] = (s2 * co3) - (r2 * si3);
|
||||
<a name="l00334"></a>00334
|
||||
<a name="l00335"></a>00335 <span class="comment">/* Twiddle coefficients index modifier */</span>
|
||||
<a name="l00336"></a>00336 ia1 = ia1 + twidCoefModifier;
|
||||
<a name="l00337"></a>00337
|
||||
<a name="l00338"></a>00338 <span class="comment">/* Updating input index */</span>
|
||||
<a name="l00339"></a>00339 i0 = i0 + 1u;
|
||||
<a name="l00340"></a>00340
|
||||
<a name="l00341"></a>00341 }
|
||||
<a name="l00342"></a>00342 <span class="keywordflow">while</span>(--j);
|
||||
<a name="l00343"></a>00343
|
||||
<a name="l00344"></a>00344 twidCoefModifier <<= 2u;
|
||||
<a name="l00345"></a>00345
|
||||
<a name="l00346"></a>00346 <span class="comment">/* Calculation of second stage to excluding last stage */</span>
|
||||
<a name="l00347"></a>00347 <span class="keywordflow">for</span> (k = fftLen / 4; k > 4u; k >>= 2u)
|
||||
<a name="l00348"></a>00348 {
|
||||
<a name="l00349"></a>00349 <span class="comment">/* Initializations for the first stage */</span>
|
||||
<a name="l00350"></a>00350 n1 = n2;
|
||||
<a name="l00351"></a>00351 n2 >>= 2u;
|
||||
<a name="l00352"></a>00352 ia1 = 0u;
|
||||
<a name="l00353"></a>00353
|
||||
<a name="l00354"></a>00354 <span class="comment">/* Calculation of first stage */</span>
|
||||
<a name="l00355"></a>00355 <span class="keywordflow">for</span> (j = 0u; j <= (n2 - 1u); j++)
|
||||
<a name="l00356"></a>00356 {
|
||||
<a name="l00357"></a>00357 <span class="comment">/* index calculation for the coefficients */</span>
|
||||
<a name="l00358"></a>00358 ia2 = ia1 + ia1;
|
||||
<a name="l00359"></a>00359 ia3 = ia2 + ia1;
|
||||
<a name="l00360"></a>00360 co1 = pCoef[ia1 * 2u];
|
||||
<a name="l00361"></a>00361 si1 = pCoef[(ia1 * 2u) + 1u];
|
||||
<a name="l00362"></a>00362 co2 = pCoef[ia2 * 2u];
|
||||
<a name="l00363"></a>00363 si2 = pCoef[(ia2 * 2u) + 1u];
|
||||
<a name="l00364"></a>00364 co3 = pCoef[ia3 * 2u];
|
||||
<a name="l00365"></a>00365 si3 = pCoef[(ia3 * 2u) + 1u];
|
||||
<a name="l00366"></a>00366
|
||||
<a name="l00367"></a>00367 <span class="comment">/* Twiddle coefficients index modifier */</span>
|
||||
<a name="l00368"></a>00368 ia1 = ia1 + twidCoefModifier;
|
||||
<a name="l00369"></a>00369
|
||||
<a name="l00370"></a>00370 <span class="keywordflow">for</span> (i0 = j; i0 < fftLen; i0 += n1)
|
||||
<a name="l00371"></a>00371 {
|
||||
<a name="l00372"></a>00372 <span class="comment">/* index calculation for the input as, */</span>
|
||||
<a name="l00373"></a>00373 <span class="comment">/* pSrc[i0 + 0], pSrc[i0 + fftLen/4], pSrc[i0 + fftLen/2], pSrc[i0 + 3fftLen/4] */</span>
|
||||
<a name="l00374"></a>00374 i1 = i0 + n2;
|
||||
<a name="l00375"></a>00375 i2 = i1 + n2;
|
||||
<a name="l00376"></a>00376 i3 = i2 + n2;
|
||||
<a name="l00377"></a>00377
|
||||
<a name="l00378"></a>00378 <span class="comment">/* xa + xc */</span>
|
||||
<a name="l00379"></a>00379 r1 = pSrc[(2u * i0)] + pSrc[(2u * i2)];
|
||||
<a name="l00380"></a>00380
|
||||
<a name="l00381"></a>00381 <span class="comment">/* xa - xc */</span>
|
||||
<a name="l00382"></a>00382 r2 = pSrc[(2u * i0)] - pSrc[(2u * i2)];
|
||||
<a name="l00383"></a>00383
|
||||
<a name="l00384"></a>00384 <span class="comment">/* ya + yc */</span>
|
||||
<a name="l00385"></a>00385 s1 = pSrc[(2u * i0) + 1u] + pSrc[(2u * i2) + 1u];
|
||||
<a name="l00386"></a>00386
|
||||
<a name="l00387"></a>00387 <span class="comment">/* ya - yc */</span>
|
||||
<a name="l00388"></a>00388 s2 = pSrc[(2u * i0) + 1u] - pSrc[(2u * i2) + 1u];
|
||||
<a name="l00389"></a>00389
|
||||
<a name="l00390"></a>00390 <span class="comment">/* xb + xd */</span>
|
||||
<a name="l00391"></a>00391 t1 = pSrc[2u * i1] + pSrc[2u * i3];
|
||||
<a name="l00392"></a>00392
|
||||
<a name="l00393"></a>00393 <span class="comment">/* xa' = xa + xb + xc + xd */</span>
|
||||
<a name="l00394"></a>00394 pSrc[2u * i0] = r1 + t1;
|
||||
<a name="l00395"></a>00395
|
||||
<a name="l00396"></a>00396 <span class="comment">/* xa + xc -(xb + xd) */</span>
|
||||
<a name="l00397"></a>00397 r1 = r1 - t1;
|
||||
<a name="l00398"></a>00398
|
||||
<a name="l00399"></a>00399 <span class="comment">/* yb + yd */</span>
|
||||
<a name="l00400"></a>00400 t2 = pSrc[(2u * i1) + 1u] + pSrc[(2u * i3) + 1u];
|
||||
<a name="l00401"></a>00401
|
||||
<a name="l00402"></a>00402 <span class="comment">/* ya' = ya + yb + yc + yd */</span>
|
||||
<a name="l00403"></a>00403 pSrc[(2u * i0) + 1u] = s1 + t2;
|
||||
<a name="l00404"></a>00404
|
||||
<a name="l00405"></a>00405 <span class="comment">/* (ya + yc) - (yb + yd) */</span>
|
||||
<a name="l00406"></a>00406 s1 = s1 - t2;
|
||||
<a name="l00407"></a>00407
|
||||
<a name="l00408"></a>00408 <span class="comment">/* (yb - yd) */</span>
|
||||
<a name="l00409"></a>00409 t1 = pSrc[(2u * i1) + 1u] - pSrc[(2u * i3) + 1u];
|
||||
<a name="l00410"></a>00410
|
||||
<a name="l00411"></a>00411 <span class="comment">/* (xb - xd) */</span>
|
||||
<a name="l00412"></a>00412 t2 = pSrc[2u * i1] - pSrc[2u * i3];
|
||||
<a name="l00413"></a>00413
|
||||
<a name="l00414"></a>00414 <span class="comment">/* xc' = (xa-xb+xc-xd)co2 + (ya-yb+yc-yd)(si2) */</span>
|
||||
<a name="l00415"></a>00415 pSrc[2u * i1] = (r1 * co2) + (s1 * si2);
|
||||
<a name="l00416"></a>00416
|
||||
<a name="l00417"></a>00417 <span class="comment">/* yc' = (ya-yb+yc-yd)co2 - (xa-xb+xc-xd)(si2) */</span>
|
||||
<a name="l00418"></a>00418 pSrc[(2u * i1) + 1u] = (s1 * co2) - (r1 * si2);
|
||||
<a name="l00419"></a>00419
|
||||
<a name="l00420"></a>00420 <span class="comment">/* (xa - xc) + (yb - yd) */</span>
|
||||
<a name="l00421"></a>00421 r1 = r2 + t1;
|
||||
<a name="l00422"></a>00422
|
||||
<a name="l00423"></a>00423 <span class="comment">/* (xa - xc) - (yb - yd) */</span>
|
||||
<a name="l00424"></a>00424 r2 = r2 - t1;
|
||||
<a name="l00425"></a>00425
|
||||
<a name="l00426"></a>00426 <span class="comment">/* (ya - yc) - (xb - xd) */</span>
|
||||
<a name="l00427"></a>00427 s1 = s2 - t2;
|
||||
<a name="l00428"></a>00428
|
||||
<a name="l00429"></a>00429 <span class="comment">/* (ya - yc) + (xb - xd) */</span>
|
||||
<a name="l00430"></a>00430 s2 = s2 + t2;
|
||||
<a name="l00431"></a>00431
|
||||
<a name="l00432"></a>00432 <span class="comment">/* xb' = (xa+yb-xc-yd)co1 + (ya-xb-yc+xd)(si1) */</span>
|
||||
<a name="l00433"></a>00433 pSrc[2u * i2] = (r1 * co1) + (s1 * si1);
|
||||
<a name="l00434"></a>00434
|
||||
<a name="l00435"></a>00435 <span class="comment">/* yb' = (ya-xb-yc+xd)co1 - (xa+yb-xc-yd)(si1) */</span>
|
||||
<a name="l00436"></a>00436 pSrc[(2u * i2) + 1u] = (s1 * co1) - (r1 * si1);
|
||||
<a name="l00437"></a>00437
|
||||
<a name="l00438"></a>00438 <span class="comment">/* xd' = (xa-yb-xc+yd)co3 + (ya+xb-yc-xd)(si3) */</span>
|
||||
<a name="l00439"></a>00439 pSrc[2u * i3] = (r2 * co3) + (s2 * si3);
|
||||
<a name="l00440"></a>00440
|
||||
<a name="l00441"></a>00441 <span class="comment">/* yd' = (ya+xb-yc-xd)co3 - (xa-yb-xc+yd)(si3) */</span>
|
||||
<a name="l00442"></a>00442 pSrc[(2u * i3) + 1u] = (s2 * co3) - (r2 * si3);
|
||||
<a name="l00443"></a>00443 }
|
||||
<a name="l00444"></a>00444 }
|
||||
<a name="l00445"></a>00445 twidCoefModifier <<= 2u;
|
||||
<a name="l00446"></a>00446 }
|
||||
<a name="l00447"></a>00447
|
||||
<a name="l00448"></a>00448 <span class="comment">/* Initializations of last stage */</span>
|
||||
<a name="l00449"></a>00449 n1 = n2;
|
||||
<a name="l00450"></a>00450 n2 >>= 2u;
|
||||
<a name="l00451"></a>00451
|
||||
<a name="l00452"></a>00452 <span class="comment">/* Calculations of last stage */</span>
|
||||
<a name="l00453"></a>00453 <span class="keywordflow">for</span> (i0 = 0u; i0 <= (fftLen - n1); i0 += n1)
|
||||
<a name="l00454"></a>00454 {
|
||||
<a name="l00455"></a>00455 <span class="comment">/* index calculation for the input as, */</span>
|
||||
<a name="l00456"></a>00456 <span class="comment">/* pSrc[i0 + 0], pSrc[i0 + fftLen/4], pSrc[i0 + fftLen/2], pSrc[i0 + 3fftLen/4] */</span>
|
||||
<a name="l00457"></a>00457 i1 = i0 + n2;
|
||||
<a name="l00458"></a>00458 i2 = i1 + n2;
|
||||
<a name="l00459"></a>00459 i3 = i2 + n2;
|
||||
<a name="l00460"></a>00460
|
||||
<a name="l00461"></a>00461 <span class="comment">/* Butterfly implementation */</span>
|
||||
<a name="l00462"></a>00462
|
||||
<a name="l00463"></a>00463 <span class="comment">/* xa + xb */</span>
|
||||
<a name="l00464"></a>00464 r1 = pSrc[2u * i0] + pSrc[2u * i2];
|
||||
<a name="l00465"></a>00465
|
||||
<a name="l00466"></a>00466 <span class="comment">/* xa - xb */</span>
|
||||
<a name="l00467"></a>00467 r2 = pSrc[2u * i0] - pSrc[2u * i2];
|
||||
<a name="l00468"></a>00468
|
||||
<a name="l00469"></a>00469 <span class="comment">/* ya + yc */</span>
|
||||
<a name="l00470"></a>00470 s1 = pSrc[(2u * i0) + 1u] + pSrc[(2u * i2) + 1u];
|
||||
<a name="l00471"></a>00471
|
||||
<a name="l00472"></a>00472 <span class="comment">/* ya - yc */</span>
|
||||
<a name="l00473"></a>00473 s2 = pSrc[(2u * i0) + 1u] - pSrc[(2u * i2) + 1u];
|
||||
<a name="l00474"></a>00474
|
||||
<a name="l00475"></a>00475 <span class="comment">/* xc + xd */</span>
|
||||
<a name="l00476"></a>00476 t1 = pSrc[2u * i1] + pSrc[2u * i3];
|
||||
<a name="l00477"></a>00477
|
||||
<a name="l00478"></a>00478 <span class="comment">/* xa' = xa + xb + xc + xd */</span>
|
||||
<a name="l00479"></a>00479 pSrc[2u * i0] = r1 + t1;
|
||||
<a name="l00480"></a>00480
|
||||
<a name="l00481"></a>00481 <span class="comment">/* (xa + xb) - (xc + xd) */</span>
|
||||
<a name="l00482"></a>00482 r1 = r1 - t1;
|
||||
<a name="l00483"></a>00483
|
||||
<a name="l00484"></a>00484 <span class="comment">/* yb + yd */</span>
|
||||
<a name="l00485"></a>00485 t2 = pSrc[(2u * i1) + 1u] + pSrc[(2u * i3) + 1u];
|
||||
<a name="l00486"></a>00486
|
||||
<a name="l00487"></a>00487 <span class="comment">/* ya' = ya + yb + yc + yd */</span>
|
||||
<a name="l00488"></a>00488 pSrc[(2u * i0) + 1u] = s1 + t2;
|
||||
<a name="l00489"></a>00489
|
||||
<a name="l00490"></a>00490 <span class="comment">/* (ya + yc) - (yb + yd) */</span>
|
||||
<a name="l00491"></a>00491 s1 = s1 - t2;
|
||||
<a name="l00492"></a>00492
|
||||
<a name="l00493"></a>00493 <span class="comment">/* (yb-yd) */</span>
|
||||
<a name="l00494"></a>00494 t1 = pSrc[(2u * i1) + 1u] - pSrc[(2u * i3) + 1u];
|
||||
<a name="l00495"></a>00495
|
||||
<a name="l00496"></a>00496 <span class="comment">/* (xb-xd) */</span>
|
||||
<a name="l00497"></a>00497 t2 = pSrc[2u * i1] - pSrc[2u * i3];
|
||||
<a name="l00498"></a>00498
|
||||
<a name="l00499"></a>00499 <span class="comment">/* xc' = (xa-xb+xc-xd)co2 + (ya-yb+yc-yd)(si2) */</span>
|
||||
<a name="l00500"></a>00500 pSrc[2u * i1] = r1;
|
||||
<a name="l00501"></a>00501
|
||||
<a name="l00502"></a>00502 <span class="comment">/* yc' = (ya-yb+yc-yd)co2 - (xa-xb+xc-xd)(si2) */</span>
|
||||
<a name="l00503"></a>00503 pSrc[(2u * i1) + 1u] = s1;
|
||||
<a name="l00504"></a>00504
|
||||
<a name="l00505"></a>00505 <span class="comment">/* (xa+yb-xc-yd) */</span>
|
||||
<a name="l00506"></a>00506 r1 = r2 + t1;
|
||||
<a name="l00507"></a>00507
|
||||
<a name="l00508"></a>00508 <span class="comment">/* (xa-yb-xc+yd) */</span>
|
||||
<a name="l00509"></a>00509 r2 = r2 - t1;
|
||||
<a name="l00510"></a>00510
|
||||
<a name="l00511"></a>00511 <span class="comment">/* (ya-xb-yc+xd) */</span>
|
||||
<a name="l00512"></a>00512 s1 = s2 - t2;
|
||||
<a name="l00513"></a>00513
|
||||
<a name="l00514"></a>00514 <span class="comment">/* (ya+xb-yc-xd) */</span>
|
||||
<a name="l00515"></a>00515 s2 = s2 + t2;
|
||||
<a name="l00516"></a>00516
|
||||
<a name="l00517"></a>00517 <span class="comment">/* xb' = (xa+yb-xc-yd)co1 + (ya-xb-yc+xd)(si1) */</span>
|
||||
<a name="l00518"></a>00518 pSrc[2u * i2] = r1;
|
||||
<a name="l00519"></a>00519
|
||||
<a name="l00520"></a>00520 <span class="comment">/* yb' = (ya-xb-yc+xd)co1 - (xa+yb-xc-yd)(si1) */</span>
|
||||
<a name="l00521"></a>00521 pSrc[(2u * i2) + 1u] = s1;
|
||||
<a name="l00522"></a>00522
|
||||
<a name="l00523"></a>00523 <span class="comment">/* xd' = (xa-yb-xc+yd)co3 + (ya+xb-yc-xd)(si3) */</span>
|
||||
<a name="l00524"></a>00524 pSrc[2u * i3] = r2;
|
||||
<a name="l00525"></a>00525
|
||||
<a name="l00526"></a>00526 <span class="comment">/* yd' = (ya+xb-yc-xd)co3 - (xa-yb-xc+yd)(si3) */</span>
|
||||
<a name="l00527"></a>00527 pSrc[(2u * i3) + 1u] = s2;
|
||||
<a name="l00528"></a>00528 }
|
||||
<a name="l00529"></a>00529 }
|
||||
<a name="l00530"></a>00530
|
||||
<a name="l00531"></a>00531 <span class="comment">/* </span>
|
||||
<a name="l00532"></a>00532 <span class="comment"> * @brief Core function for the floating-point CIFFT butterfly process. </span>
|
||||
<a name="l00533"></a>00533 <span class="comment"> * @param[in, out] *pSrc points to the in-place buffer of floating-point data type. </span>
|
||||
<a name="l00534"></a>00534 <span class="comment"> * @param[in] fftLen length of the FFT. </span>
|
||||
<a name="l00535"></a>00535 <span class="comment"> * @param[in] *pCoef points to twiddle coefficient buffer. </span>
|
||||
<a name="l00536"></a>00536 <span class="comment"> * @param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </span>
|
||||
<a name="l00537"></a>00537 <span class="comment"> * @param[in] onebyfftLen value of 1/fftLen. </span>
|
||||
<a name="l00538"></a>00538 <span class="comment"> * @return none. </span>
|
||||
<a name="l00539"></a>00539 <span class="comment"> */</span>
|
||||
<a name="l00540"></a>00540
|
||||
<a name="l00541"></a><a class="code" href="arm__math_8h.html#a2a78df6e4bbf080624f2b6349224ec93">00541</a> <span class="keywordtype">void</span> <a class="code" href="arm__cfft__radix4__f32_8c.html#a2a78df6e4bbf080624f2b6349224ec93" title="Core function for the floating-point CIFFT butterfly process.">arm_radix4_butterfly_inverse_f32</a>(
|
||||
<a name="l00542"></a>00542 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc,
|
||||
<a name="l00543"></a>00543 uint16_t fftLen,
|
||||
<a name="l00544"></a>00544 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pCoef,
|
||||
<a name="l00545"></a>00545 uint16_t twidCoefModifier,
|
||||
<a name="l00546"></a>00546 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> onebyfftLen)
|
||||
<a name="l00547"></a>00547 {
|
||||
<a name="l00548"></a>00548 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> co1, co2, co3, si1, si2, si3;
|
||||
<a name="l00549"></a>00549 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> t1, t2, r1, r2, s1, s2;
|
||||
<a name="l00550"></a>00550 uint32_t ia1, ia2, ia3;
|
||||
<a name="l00551"></a>00551 uint32_t i0, i1, i2, i3;
|
||||
<a name="l00552"></a>00552 uint32_t n1, n2, j, k;
|
||||
<a name="l00553"></a>00553
|
||||
<a name="l00554"></a>00554 <span class="comment">/* Initializations for the first stage */</span>
|
||||
<a name="l00555"></a>00555 n2 = fftLen;
|
||||
<a name="l00556"></a>00556 n1 = n2;
|
||||
<a name="l00557"></a>00557
|
||||
<a name="l00558"></a>00558 <span class="comment">/* n2 = fftLen/4 */</span>
|
||||
<a name="l00559"></a>00559 n2 >>= 2u;
|
||||
<a name="l00560"></a>00560 i0 = 0u;
|
||||
<a name="l00561"></a>00561 ia1 = 0u;
|
||||
<a name="l00562"></a>00562
|
||||
<a name="l00563"></a>00563 j = n2;
|
||||
<a name="l00564"></a>00564
|
||||
<a name="l00565"></a>00565 <span class="comment">/* Calculation of first stage */</span>
|
||||
<a name="l00566"></a>00566 <span class="keywordflow">do</span>
|
||||
<a name="l00567"></a>00567 {
|
||||
<a name="l00568"></a>00568 <span class="comment">/* index calculation for the input as, */</span>
|
||||
<a name="l00569"></a>00569 <span class="comment">/* pSrc[i0 + 0], pSrc[i0 + fftLen/4], pSrc[i0 + fftLen/2], pSrc[i0 + 3fftLen/4] */</span>
|
||||
<a name="l00570"></a>00570 i1 = i0 + n2;
|
||||
<a name="l00571"></a>00571 i2 = i1 + n2;
|
||||
<a name="l00572"></a>00572 i3 = i2 + n2;
|
||||
<a name="l00573"></a>00573
|
||||
<a name="l00574"></a>00574 <span class="comment">/* Butterfly implementation */</span>
|
||||
<a name="l00575"></a>00575 <span class="comment">/* xa + xc */</span>
|
||||
<a name="l00576"></a>00576 r1 = pSrc[(2u * i0)] + pSrc[(2u * i2)];
|
||||
<a name="l00577"></a>00577
|
||||
<a name="l00578"></a>00578 <span class="comment">/* xa - xc */</span>
|
||||
<a name="l00579"></a>00579 r2 = pSrc[2u * i0] - pSrc[2u * i2];
|
||||
<a name="l00580"></a>00580
|
||||
<a name="l00581"></a>00581 <span class="comment">/* ya + yc */</span>
|
||||
<a name="l00582"></a>00582 s1 = pSrc[(2u * i0) + 1u] + pSrc[(2u * i2) + 1u];
|
||||
<a name="l00583"></a>00583
|
||||
<a name="l00584"></a>00584 <span class="comment">/* ya - yc */</span>
|
||||
<a name="l00585"></a>00585 s2 = pSrc[(2u * i0) + 1u] - pSrc[(2u * i2) + 1u];
|
||||
<a name="l00586"></a>00586
|
||||
<a name="l00587"></a>00587 <span class="comment">/* xb + xd */</span>
|
||||
<a name="l00588"></a>00588 t1 = pSrc[2u * i1] + pSrc[2u * i3];
|
||||
<a name="l00589"></a>00589
|
||||
<a name="l00590"></a>00590 <span class="comment">/* xa' = xa + xb + xc + xd */</span>
|
||||
<a name="l00591"></a>00591 pSrc[2u * i0] = r1 + t1;
|
||||
<a name="l00592"></a>00592
|
||||
<a name="l00593"></a>00593 <span class="comment">/* (xa + xc) - (xb + xd) */</span>
|
||||
<a name="l00594"></a>00594 r1 = r1 - t1;
|
||||
<a name="l00595"></a>00595
|
||||
<a name="l00596"></a>00596 <span class="comment">/* yb + yd */</span>
|
||||
<a name="l00597"></a>00597 t2 = pSrc[(2u * i1) + 1u] + pSrc[(2u * i3) + 1u];
|
||||
<a name="l00598"></a>00598
|
||||
<a name="l00599"></a>00599 <span class="comment">/* ya' = ya + yb + yc + yd */</span>
|
||||
<a name="l00600"></a>00600 pSrc[(2u * i0) + 1u] = s1 + t2;
|
||||
<a name="l00601"></a>00601
|
||||
<a name="l00602"></a>00602 <span class="comment">/* (ya + yc) - (yb + yd) */</span>
|
||||
<a name="l00603"></a>00603 s1 = s1 - t2;
|
||||
<a name="l00604"></a>00604
|
||||
<a name="l00605"></a>00605 <span class="comment">/* yb - yd */</span>
|
||||
<a name="l00606"></a>00606 t1 = pSrc[(2u * i1) + 1u] - pSrc[(2u * i3) + 1u];
|
||||
<a name="l00607"></a>00607
|
||||
<a name="l00608"></a>00608 <span class="comment">/* xb - xd */</span>
|
||||
<a name="l00609"></a>00609 t2 = pSrc[2u * i1] - pSrc[2u * i3];
|
||||
<a name="l00610"></a>00610
|
||||
<a name="l00611"></a>00611 <span class="comment">/* index calculation for the coefficients */</span>
|
||||
<a name="l00612"></a>00612 ia2 = ia1 + ia1;
|
||||
<a name="l00613"></a>00613 co2 = pCoef[ia2 * 2u];
|
||||
<a name="l00614"></a>00614 si2 = pCoef[(ia2 * 2u) + 1u];
|
||||
<a name="l00615"></a>00615
|
||||
<a name="l00616"></a>00616 <span class="comment">/* xc' = (xa-xb+xc-xd)co2 - (ya-yb+yc-yd)(si2) */</span>
|
||||
<a name="l00617"></a>00617 pSrc[2u * i1] = (r1 * co2) - (s1 * si2);
|
||||
<a name="l00618"></a>00618
|
||||
<a name="l00619"></a>00619 <span class="comment">/* yc' = (ya-yb+yc-yd)co2 + (xa-xb+xc-xd)(si2) */</span>
|
||||
<a name="l00620"></a>00620 pSrc[(2u * i1) + 1u] = (s1 * co2) + (r1 * si2);
|
||||
<a name="l00621"></a>00621
|
||||
<a name="l00622"></a>00622 <span class="comment">/* (xa - xc) - (yb - yd) */</span>
|
||||
<a name="l00623"></a>00623 r1 = r2 - t1;
|
||||
<a name="l00624"></a>00624
|
||||
<a name="l00625"></a>00625 <span class="comment">/* (xa - xc) + (yb - yd) */</span>
|
||||
<a name="l00626"></a>00626 r2 = r2 + t1;
|
||||
<a name="l00627"></a>00627
|
||||
<a name="l00628"></a>00628 <span class="comment">/* (ya - yc) + (xb - xd) */</span>
|
||||
<a name="l00629"></a>00629 s1 = s2 + t2;
|
||||
<a name="l00630"></a>00630
|
||||
<a name="l00631"></a>00631 <span class="comment">/* (ya - yc) - (xb - xd) */</span>
|
||||
<a name="l00632"></a>00632 s2 = s2 - t2;
|
||||
<a name="l00633"></a>00633
|
||||
<a name="l00634"></a>00634 co1 = pCoef[ia1 * 2u];
|
||||
<a name="l00635"></a>00635 si1 = pCoef[(ia1 * 2u) + 1u];
|
||||
<a name="l00636"></a>00636
|
||||
<a name="l00637"></a>00637 <span class="comment">/* xb' = (xa+yb-xc-yd)co1 - (ya-xb-yc+xd)(si1) */</span>
|
||||
<a name="l00638"></a>00638 pSrc[2u * i2] = (r1 * co1) - (s1 * si1);
|
||||
<a name="l00639"></a>00639
|
||||
<a name="l00640"></a>00640 <span class="comment">/* yb' = (ya-xb-yc+xd)co1 + (xa+yb-xc-yd)(si1) */</span>
|
||||
<a name="l00641"></a>00641 pSrc[(2u * i2) + 1u] = (s1 * co1) + (r1 * si1);
|
||||
<a name="l00642"></a>00642
|
||||
<a name="l00643"></a>00643 <span class="comment">/* index calculation for the coefficients */</span>
|
||||
<a name="l00644"></a>00644 ia3 = ia2 + ia1;
|
||||
<a name="l00645"></a>00645 co3 = pCoef[ia3 * 2u];
|
||||
<a name="l00646"></a>00646 si3 = pCoef[(ia3 * 2u) + 1u];
|
||||
<a name="l00647"></a>00647
|
||||
<a name="l00648"></a>00648 <span class="comment">/* xd' = (xa-yb-xc+yd)co3 - (ya+xb-yc-xd)(si3) */</span>
|
||||
<a name="l00649"></a>00649 pSrc[2u * i3] = (r2 * co3) - (s2 * si3);
|
||||
<a name="l00650"></a>00650
|
||||
<a name="l00651"></a>00651 <span class="comment">/* yd' = (ya+xb-yc-xd)co3 + (xa-yb-xc+yd)(si3) */</span>
|
||||
<a name="l00652"></a>00652 pSrc[(2u * i3) + 1u] = (s2 * co3) + (r2 * si3);
|
||||
<a name="l00653"></a>00653
|
||||
<a name="l00654"></a>00654 <span class="comment">/* Twiddle coefficients index modifier */</span>
|
||||
<a name="l00655"></a>00655 ia1 = ia1 + twidCoefModifier;
|
||||
<a name="l00656"></a>00656
|
||||
<a name="l00657"></a>00657 <span class="comment">/* Updating input index */</span>
|
||||
<a name="l00658"></a>00658 i0 = i0 + 1u;
|
||||
<a name="l00659"></a>00659
|
||||
<a name="l00660"></a>00660 }
|
||||
<a name="l00661"></a>00661 <span class="keywordflow">while</span>(--j);
|
||||
<a name="l00662"></a>00662
|
||||
<a name="l00663"></a>00663 twidCoefModifier <<= 2u;
|
||||
<a name="l00664"></a>00664
|
||||
<a name="l00665"></a>00665 <span class="comment">/* Calculation of second stage to excluding last stage */</span>
|
||||
<a name="l00666"></a>00666 <span class="keywordflow">for</span> (k = fftLen / 4; k > 4u; k >>= 2u)
|
||||
<a name="l00667"></a>00667 {
|
||||
<a name="l00668"></a>00668 <span class="comment">/* Initializations for the first stage */</span>
|
||||
<a name="l00669"></a>00669 n1 = n2;
|
||||
<a name="l00670"></a>00670 n2 >>= 2u;
|
||||
<a name="l00671"></a>00671 ia1 = 0u;
|
||||
<a name="l00672"></a>00672
|
||||
<a name="l00673"></a>00673 <span class="comment">/* Calculation of first stage */</span>
|
||||
<a name="l00674"></a>00674 <span class="keywordflow">for</span> (j = 0u; j <= (n2 - 1u); j++)
|
||||
<a name="l00675"></a>00675 {
|
||||
<a name="l00676"></a>00676 <span class="comment">/* index calculation for the coefficients */</span>
|
||||
<a name="l00677"></a>00677 ia2 = ia1 + ia1;
|
||||
<a name="l00678"></a>00678 ia3 = ia2 + ia1;
|
||||
<a name="l00679"></a>00679 co1 = pCoef[ia1 * 2u];
|
||||
<a name="l00680"></a>00680 si1 = pCoef[(ia1 * 2u) + 1u];
|
||||
<a name="l00681"></a>00681 co2 = pCoef[ia2 * 2u];
|
||||
<a name="l00682"></a>00682 si2 = pCoef[(ia2 * 2u) + 1u];
|
||||
<a name="l00683"></a>00683 co3 = pCoef[ia3 * 2u];
|
||||
<a name="l00684"></a>00684 si3 = pCoef[(ia3 * 2u) + 1u];
|
||||
<a name="l00685"></a>00685
|
||||
<a name="l00686"></a>00686 <span class="comment">/* Twiddle coefficients index modifier */</span>
|
||||
<a name="l00687"></a>00687 ia1 = ia1 + twidCoefModifier;
|
||||
<a name="l00688"></a>00688
|
||||
<a name="l00689"></a>00689 <span class="keywordflow">for</span> (i0 = j; i0 < fftLen; i0 += n1)
|
||||
<a name="l00690"></a>00690 {
|
||||
<a name="l00691"></a>00691 <span class="comment">/* index calculation for the input as, */</span>
|
||||
<a name="l00692"></a>00692 <span class="comment">/* pSrc[i0 + 0], pSrc[i0 + fftLen/4], pSrc[i0 + fftLen/2], pSrc[i0 + 3fftLen/4] */</span>
|
||||
<a name="l00693"></a>00693 i1 = i0 + n2;
|
||||
<a name="l00694"></a>00694 i2 = i1 + n2;
|
||||
<a name="l00695"></a>00695 i3 = i2 + n2;
|
||||
<a name="l00696"></a>00696
|
||||
<a name="l00697"></a>00697 <span class="comment">/* xa + xc */</span>
|
||||
<a name="l00698"></a>00698 r1 = pSrc[(2u * i0)] + pSrc[(2u * i2)];
|
||||
<a name="l00699"></a>00699
|
||||
<a name="l00700"></a>00700 <span class="comment">/* xa - xc */</span>
|
||||
<a name="l00701"></a>00701 r2 = pSrc[(2u * i0)] - pSrc[(2u * i2)];
|
||||
<a name="l00702"></a>00702
|
||||
<a name="l00703"></a>00703 <span class="comment">/* ya + yc */</span>
|
||||
<a name="l00704"></a>00704 s1 = pSrc[(2u * i0) + 1u] + pSrc[(2u * i2) + 1u];
|
||||
<a name="l00705"></a>00705
|
||||
<a name="l00706"></a>00706 <span class="comment">/* ya - yc */</span>
|
||||
<a name="l00707"></a>00707 s2 = pSrc[(2u * i0) + 1u] - pSrc[(2u * i2) + 1u];
|
||||
<a name="l00708"></a>00708
|
||||
<a name="l00709"></a>00709 <span class="comment">/* xb + xd */</span>
|
||||
<a name="l00710"></a>00710 t1 = pSrc[2u * i1] + pSrc[2u * i3];
|
||||
<a name="l00711"></a>00711
|
||||
<a name="l00712"></a>00712 <span class="comment">/* xa' = xa + xb + xc + xd */</span>
|
||||
<a name="l00713"></a>00713 pSrc[2u * i0] = r1 + t1;
|
||||
<a name="l00714"></a>00714
|
||||
<a name="l00715"></a>00715 <span class="comment">/* xa + xc -(xb + xd) */</span>
|
||||
<a name="l00716"></a>00716 r1 = r1 - t1;
|
||||
<a name="l00717"></a>00717
|
||||
<a name="l00718"></a>00718 <span class="comment">/* yb + yd */</span>
|
||||
<a name="l00719"></a>00719 t2 = pSrc[(2u * i1) + 1u] + pSrc[(2u * i3) + 1u];
|
||||
<a name="l00720"></a>00720
|
||||
<a name="l00721"></a>00721 <span class="comment">/* ya' = ya + yb + yc + yd */</span>
|
||||
<a name="l00722"></a>00722 pSrc[(2u * i0) + 1u] = s1 + t2;
|
||||
<a name="l00723"></a>00723
|
||||
<a name="l00724"></a>00724 <span class="comment">/* (ya + yc) - (yb + yd) */</span>
|
||||
<a name="l00725"></a>00725 s1 = s1 - t2;
|
||||
<a name="l00726"></a>00726
|
||||
<a name="l00727"></a>00727 <span class="comment">/* (yb - yd) */</span>
|
||||
<a name="l00728"></a>00728 t1 = pSrc[(2u * i1) + 1u] - pSrc[(2u * i3) + 1u];
|
||||
<a name="l00729"></a>00729
|
||||
<a name="l00730"></a>00730 <span class="comment">/* (xb - xd) */</span>
|
||||
<a name="l00731"></a>00731 t2 = pSrc[2u * i1] - pSrc[2u * i3];
|
||||
<a name="l00732"></a>00732
|
||||
<a name="l00733"></a>00733 <span class="comment">/* xc' = (xa-xb+xc-xd)co2 - (ya-yb+yc-yd)(si2) */</span>
|
||||
<a name="l00734"></a>00734 pSrc[2u * i1] = (r1 * co2) - (s1 * si2);
|
||||
<a name="l00735"></a>00735
|
||||
<a name="l00736"></a>00736 <span class="comment">/* yc' = (ya-yb+yc-yd)co2 + (xa-xb+xc-xd)(si2) */</span>
|
||||
<a name="l00737"></a>00737 pSrc[(2u * i1) + 1u] = (s1 * co2) + (r1 * si2);
|
||||
<a name="l00738"></a>00738
|
||||
<a name="l00739"></a>00739 <span class="comment">/* (xa - xc) - (yb - yd) */</span>
|
||||
<a name="l00740"></a>00740 r1 = r2 - t1;
|
||||
<a name="l00741"></a>00741
|
||||
<a name="l00742"></a>00742 <span class="comment">/* (xa - xc) + (yb - yd) */</span>
|
||||
<a name="l00743"></a>00743 r2 = r2 + t1;
|
||||
<a name="l00744"></a>00744
|
||||
<a name="l00745"></a>00745 <span class="comment">/* (ya - yc) + (xb - xd) */</span>
|
||||
<a name="l00746"></a>00746 s1 = s2 + t2;
|
||||
<a name="l00747"></a>00747
|
||||
<a name="l00748"></a>00748 <span class="comment">/* (ya - yc) - (xb - xd) */</span>
|
||||
<a name="l00749"></a>00749 s2 = s2 - t2;
|
||||
<a name="l00750"></a>00750
|
||||
<a name="l00751"></a>00751 <span class="comment">/* xb' = (xa+yb-xc-yd)co1 - (ya-xb-yc+xd)(si1) */</span>
|
||||
<a name="l00752"></a>00752 pSrc[2u * i2] = (r1 * co1) - (s1 * si1);
|
||||
<a name="l00753"></a>00753
|
||||
<a name="l00754"></a>00754 <span class="comment">/* yb' = (ya-xb-yc+xd)co1 + (xa+yb-xc-yd)(si1) */</span>
|
||||
<a name="l00755"></a>00755 pSrc[(2u * i2) + 1u] = (s1 * co1) + (r1 * si1);
|
||||
<a name="l00756"></a>00756
|
||||
<a name="l00757"></a>00757 <span class="comment">/* xd' = (xa-yb-xc+yd)co3 - (ya+xb-yc-xd)(si3) */</span>
|
||||
<a name="l00758"></a>00758 pSrc[2u * i3] = (r2 * co3) - (s2 * si3);
|
||||
<a name="l00759"></a>00759
|
||||
<a name="l00760"></a>00760 <span class="comment">/* yd' = (ya+xb-yc-xd)co3 + (xa-yb-xc+yd)(si3) */</span>
|
||||
<a name="l00761"></a>00761 pSrc[(2u * i3) + 1u] = (s2 * co3) + (r2 * si3);
|
||||
<a name="l00762"></a>00762 }
|
||||
<a name="l00763"></a>00763 }
|
||||
<a name="l00764"></a>00764 twidCoefModifier <<= 2u;
|
||||
<a name="l00765"></a>00765 }
|
||||
<a name="l00766"></a>00766
|
||||
<a name="l00767"></a>00767 <span class="comment">/* Initializations of last stage */</span>
|
||||
<a name="l00768"></a>00768 n1 = n2;
|
||||
<a name="l00769"></a>00769 n2 >>= 2u;
|
||||
<a name="l00770"></a>00770
|
||||
<a name="l00771"></a>00771 <span class="comment">/* Calculations of last stage */</span>
|
||||
<a name="l00772"></a>00772 <span class="keywordflow">for</span> (i0 = 0u; i0 <= (fftLen - n1); i0 += n1)
|
||||
<a name="l00773"></a>00773 {
|
||||
<a name="l00774"></a>00774 <span class="comment">/* index calculation for the input as, */</span>
|
||||
<a name="l00775"></a>00775 <span class="comment">/* pSrc[i0 + 0], pSrc[i0 + fftLen/4], pSrc[i0 + fftLen/2], pSrc[i0 + 3fftLen/4] */</span>
|
||||
<a name="l00776"></a>00776 i1 = i0 + n2;
|
||||
<a name="l00777"></a>00777 i2 = i1 + n2;
|
||||
<a name="l00778"></a>00778 i3 = i2 + n2;
|
||||
<a name="l00779"></a>00779
|
||||
<a name="l00780"></a>00780 <span class="comment">/* Butterfly implementation */</span>
|
||||
<a name="l00781"></a>00781 <span class="comment">/* xa + xc */</span>
|
||||
<a name="l00782"></a>00782 r1 = pSrc[2u * i0] + pSrc[2u * i2];
|
||||
<a name="l00783"></a>00783
|
||||
<a name="l00784"></a>00784 <span class="comment">/* xa - xc */</span>
|
||||
<a name="l00785"></a>00785 r2 = pSrc[2u * i0] - pSrc[2u * i2];
|
||||
<a name="l00786"></a>00786
|
||||
<a name="l00787"></a>00787 <span class="comment">/* ya + yc */</span>
|
||||
<a name="l00788"></a>00788 s1 = pSrc[(2u * i0) + 1u] + pSrc[(2u * i2) + 1u];
|
||||
<a name="l00789"></a>00789
|
||||
<a name="l00790"></a>00790 <span class="comment">/* ya - yc */</span>
|
||||
<a name="l00791"></a>00791 s2 = pSrc[(2u * i0) + 1u] - pSrc[(2u * i2) + 1u];
|
||||
<a name="l00792"></a>00792
|
||||
<a name="l00793"></a>00793 <span class="comment">/* xc + xd */</span>
|
||||
<a name="l00794"></a>00794 t1 = pSrc[2u * i1] + pSrc[2u * i3];
|
||||
<a name="l00795"></a>00795
|
||||
<a name="l00796"></a>00796 <span class="comment">/* xa' = xa + xb + xc + xd */</span>
|
||||
<a name="l00797"></a>00797 pSrc[2u * i0] = (r1 + t1) * onebyfftLen;
|
||||
<a name="l00798"></a>00798
|
||||
<a name="l00799"></a>00799 <span class="comment">/* (xa + xb) - (xc + xd) */</span>
|
||||
<a name="l00800"></a>00800 r1 = r1 - t1;
|
||||
<a name="l00801"></a>00801
|
||||
<a name="l00802"></a>00802 <span class="comment">/* yb + yd */</span>
|
||||
<a name="l00803"></a>00803 t2 = pSrc[(2u * i1) + 1u] + pSrc[(2u * i3) + 1u];
|
||||
<a name="l00804"></a>00804
|
||||
<a name="l00805"></a>00805 <span class="comment">/* ya' = ya + yb + yc + yd */</span>
|
||||
<a name="l00806"></a>00806 pSrc[(2u * i0) + 1u] = (s1 + t2) * onebyfftLen;
|
||||
<a name="l00807"></a>00807
|
||||
<a name="l00808"></a>00808 <span class="comment">/* (ya + yc) - (yb + yd) */</span>
|
||||
<a name="l00809"></a>00809 s1 = s1 - t2;
|
||||
<a name="l00810"></a>00810
|
||||
<a name="l00811"></a>00811 <span class="comment">/* (yb-yd) */</span>
|
||||
<a name="l00812"></a>00812 t1 = pSrc[(2u * i1) + 1u] - pSrc[(2u * i3) + 1u];
|
||||
<a name="l00813"></a>00813
|
||||
<a name="l00814"></a>00814 <span class="comment">/* (xb-xd) */</span>
|
||||
<a name="l00815"></a>00815 t2 = pSrc[2u * i1] - pSrc[2u * i3];
|
||||
<a name="l00816"></a>00816
|
||||
<a name="l00817"></a>00817 <span class="comment">/* xc' = (xa-xb+xc-xd)co2 - (ya-yb+yc-yd)(si2) */</span>
|
||||
<a name="l00818"></a>00818 pSrc[2u * i1] = r1 * onebyfftLen;
|
||||
<a name="l00819"></a>00819
|
||||
<a name="l00820"></a>00820 <span class="comment">/* yc' = (ya-yb+yc-yd)co2 + (xa-xb+xc-xd)(si2) */</span>
|
||||
<a name="l00821"></a>00821 pSrc[(2u * i1) + 1u] = s1 * onebyfftLen;
|
||||
<a name="l00822"></a>00822
|
||||
<a name="l00823"></a>00823
|
||||
<a name="l00824"></a>00824 <span class="comment">/* (xa - xc) - (yb-yd) */</span>
|
||||
<a name="l00825"></a>00825 r1 = r2 - t1;
|
||||
<a name="l00826"></a>00826
|
||||
<a name="l00827"></a>00827 <span class="comment">/* (xa - xc) + (yb-yd) */</span>
|
||||
<a name="l00828"></a>00828 r2 = r2 + t1;
|
||||
<a name="l00829"></a>00829
|
||||
<a name="l00830"></a>00830 <span class="comment">/* (ya - yc) + (xb-xd) */</span>
|
||||
<a name="l00831"></a>00831 s1 = s2 + t2;
|
||||
<a name="l00832"></a>00832
|
||||
<a name="l00833"></a>00833 <span class="comment">/* (ya - yc) - (xb-xd) */</span>
|
||||
<a name="l00834"></a>00834 s2 = s2 - t2;
|
||||
<a name="l00835"></a>00835
|
||||
<a name="l00836"></a>00836 <span class="comment">/* xb' = (xa+yb-xc-yd)co1 - (ya-xb-yc+xd)(si1) */</span>
|
||||
<a name="l00837"></a>00837 pSrc[2u * i2] = r1 * onebyfftLen;
|
||||
<a name="l00838"></a>00838
|
||||
<a name="l00839"></a>00839 <span class="comment">/* yb' = (ya-xb-yc+xd)co1 + (xa+yb-xc-yd)(si1) */</span>
|
||||
<a name="l00840"></a>00840 pSrc[(2u * i2) + 1u] = s1 * onebyfftLen;
|
||||
<a name="l00841"></a>00841
|
||||
<a name="l00842"></a>00842 <span class="comment">/* xd' = (xa-yb-xc+yd)co3 - (ya+xb-yc-xd)(si3) */</span>
|
||||
<a name="l00843"></a>00843 pSrc[2u * i3] = r2 * onebyfftLen;
|
||||
<a name="l00844"></a>00844
|
||||
<a name="l00845"></a>00845 <span class="comment">/* yd' = (ya+xb-yc-xd)co3 + (xa-yb-xc+yd)(si3) */</span>
|
||||
<a name="l00846"></a>00846 pSrc[(2u * i3) + 1u] = s2 * onebyfftLen;
|
||||
<a name="l00847"></a>00847 }
|
||||
<a name="l00848"></a>00848 }
|
||||
<a name="l00849"></a>00849
|
||||
<a name="l00850"></a>00850 <span class="comment">/* </span>
|
||||
<a name="l00851"></a>00851 <span class="comment"> * @brief In-place bit reversal function. </span>
|
||||
<a name="l00852"></a>00852 <span class="comment"> * @param[in, out] *pSrc points to the in-place buffer of floating-point data type. </span>
|
||||
<a name="l00853"></a>00853 <span class="comment"> * @param[in] fftSize length of the FFT. </span>
|
||||
<a name="l00854"></a>00854 <span class="comment"> * @param[in] bitRevFactor bit reversal modifier that supports different size FFTs with the same bit reversal table. </span>
|
||||
<a name="l00855"></a>00855 <span class="comment"> * @param[in] *pBitRevTab points to the bit reversal table. </span>
|
||||
<a name="l00856"></a>00856 <span class="comment"> * @return none. </span>
|
||||
<a name="l00857"></a>00857 <span class="comment"> */</span>
|
||||
<a name="l00858"></a>00858
|
||||
<a name="l00859"></a><a class="code" href="arm__math_8h.html#a3d4062fdfa6aaa3f51f41cab868e508b">00859</a> <span class="keywordtype">void</span> <a class="code" href="arm__cfft__radix4__f32_8c.html#a3d4062fdfa6aaa3f51f41cab868e508b" title="In-place bit reversal function.">arm_bitreversal_f32</a>(
|
||||
<a name="l00860"></a>00860 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pSrc,
|
||||
<a name="l00861"></a>00861 uint16_t <a class="code" href="arm__fft__bin__example__f32_8c.html#a9b500899c581f6df3ffc0a9f3a9ef6aa">fftSize</a>,
|
||||
<a name="l00862"></a>00862 uint16_t bitRevFactor,
|
||||
<a name="l00863"></a>00863 uint16_t * pBitRevTab)
|
||||
<a name="l00864"></a>00864 {
|
||||
<a name="l00865"></a>00865 uint16_t fftLenBy2, fftLenBy2p1;
|
||||
<a name="l00866"></a>00866 uint16_t i, j;
|
||||
<a name="l00867"></a>00867 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> in;
|
||||
<a name="l00868"></a>00868
|
||||
<a name="l00869"></a>00869 <span class="comment">/* Initializations */</span>
|
||||
<a name="l00870"></a>00870 j = 0u;
|
||||
<a name="l00871"></a>00871 fftLenBy2 = fftSize >> 1u;
|
||||
<a name="l00872"></a>00872 fftLenBy2p1 = (fftSize >> 1u) + 1u;
|
||||
<a name="l00873"></a>00873
|
||||
<a name="l00874"></a>00874 <span class="comment">/* Bit Reversal Implementation */</span>
|
||||
<a name="l00875"></a>00875 <span class="keywordflow">for</span> (i = 0u; i <= (fftLenBy2 - 2u); i += 2u)
|
||||
<a name="l00876"></a>00876 {
|
||||
<a name="l00877"></a>00877 <span class="keywordflow">if</span>(i < j)
|
||||
<a name="l00878"></a>00878 {
|
||||
<a name="l00879"></a>00879 <span class="comment">/* pSrc[i] <-> pSrc[j]; */</span>
|
||||
<a name="l00880"></a>00880 in = pSrc[2u * i];
|
||||
<a name="l00881"></a>00881 pSrc[2u * i] = pSrc[2u * j];
|
||||
<a name="l00882"></a>00882 pSrc[2u * j] = in;
|
||||
<a name="l00883"></a>00883
|
||||
<a name="l00884"></a>00884 <span class="comment">/* pSrc[i+1u] <-> pSrc[j+1u] */</span>
|
||||
<a name="l00885"></a>00885 in = pSrc[(2u * i) + 1u];
|
||||
<a name="l00886"></a>00886 pSrc[(2u * i) + 1u] = pSrc[(2u * j) + 1u];
|
||||
<a name="l00887"></a>00887 pSrc[(2u * j) + 1u] = in;
|
||||
<a name="l00888"></a>00888
|
||||
<a name="l00889"></a>00889 <span class="comment">/* pSrc[i+fftLenBy2p1] <-> pSrc[j+fftLenBy2p1] */</span>
|
||||
<a name="l00890"></a>00890 in = pSrc[2u * (i + fftLenBy2p1)];
|
||||
<a name="l00891"></a>00891 pSrc[2u * (i + fftLenBy2p1)] = pSrc[2u * (j + fftLenBy2p1)];
|
||||
<a name="l00892"></a>00892 pSrc[2u * (j + fftLenBy2p1)] = in;
|
||||
<a name="l00893"></a>00893
|
||||
<a name="l00894"></a>00894 <span class="comment">/* pSrc[i+fftLenBy2p1+1u] <-> pSrc[j+fftLenBy2p1+1u] */</span>
|
||||
<a name="l00895"></a>00895 in = pSrc[(2u * (i + fftLenBy2p1)) + 1u];
|
||||
<a name="l00896"></a>00896 pSrc[(2u * (i + fftLenBy2p1)) + 1u] =
|
||||
<a name="l00897"></a>00897 pSrc[(2u * (j + fftLenBy2p1)) + 1u];
|
||||
<a name="l00898"></a>00898 pSrc[(2u * (j + fftLenBy2p1)) + 1u] = in;
|
||||
<a name="l00899"></a>00899
|
||||
<a name="l00900"></a>00900 }
|
||||
<a name="l00901"></a>00901
|
||||
<a name="l00902"></a>00902 <span class="comment">/* pSrc[i+1u] <-> pSrc[j+1u] */</span>
|
||||
<a name="l00903"></a>00903 in = pSrc[2u * (i + 1u)];
|
||||
<a name="l00904"></a>00904 pSrc[2u * (i + 1u)] = pSrc[2u * (j + fftLenBy2)];
|
||||
<a name="l00905"></a>00905 pSrc[2u * (j + fftLenBy2)] = in;
|
||||
<a name="l00906"></a>00906
|
||||
<a name="l00907"></a>00907 <span class="comment">/* pSrc[i+2u] <-> pSrc[j+2u] */</span>
|
||||
<a name="l00908"></a>00908 in = pSrc[(2u * (i + 1u)) + 1u];
|
||||
<a name="l00909"></a>00909 pSrc[(2u * (i + 1u)) + 1u] = pSrc[(2u * (j + fftLenBy2)) + 1u];
|
||||
<a name="l00910"></a>00910 pSrc[(2u * (j + fftLenBy2)) + 1u] = in;
|
||||
<a name="l00911"></a>00911
|
||||
<a name="l00912"></a>00912 <span class="comment">/* Reading the index for the bit reversal */</span>
|
||||
<a name="l00913"></a>00913 j = *pBitRevTab;
|
||||
<a name="l00914"></a>00914
|
||||
<a name="l00915"></a>00915 <span class="comment">/* Updating the bit reversal index depending on the fft length */</span>
|
||||
<a name="l00916"></a>00916 pBitRevTab += bitRevFactor;
|
||||
<a name="l00917"></a>00917 }
|
||||
<a name="l00918"></a>00918 }
|
||||
</pre></div></div>
|
||||
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<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6">arm_status</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga0c2acfda3126c452e75b81669e8ad9ef">arm_cfft_radix4_init_q15</a> (<a class="el" href="structarm__cfft__radix4__instance__q15.html">arm_cfft_radix4_instance_q15</a> *S, uint16_t fftLen, uint8_t <a class="el" href="arm__fft__bin__example__f32_8c.html#a379ccb99013d369a41b49619083c16ef">ifftFlag</a>, uint8_t bitReverseFlag)</td></tr>
|
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<tr><td colspan="2"><h2><a name="var-members"></a>
|
||||
Variables</h2></td></tr>
|
||||
<tr><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga5a1667c1f9ffa6b40cddb90034d7d3b0">twiddleCoefQ15</a> [2048]</td></tr>
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<h1>arm_cfft_radix4_init_q15.c</h1> </div>
|
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<div class="contents">
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<a href="arm__cfft__radix4__init__q15_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_cfft_radix4_init_q15.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Radix-4 Decimation in Frequency Q15 FFT & IFFT initialization function </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Initial version </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "arm_common_tables.h"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00046"></a>00046 <span class="comment">/* </span>
|
||||
<a name="l00047"></a>00047 <span class="comment">* @brief Twiddle factors Table </span>
|
||||
<a name="l00048"></a>00048 <span class="comment">*/</span>
|
||||
<a name="l00049"></a>00049
|
||||
<a name="l00069"></a><a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga5a1667c1f9ffa6b40cddb90034d7d3b0">00069</a> <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga5a1667c1f9ffa6b40cddb90034d7d3b0">twiddleCoefQ15</a>[2048] = {
|
||||
<a name="l00070"></a>00070 0x7fff, 0x0, 0x7fff, 0xc9, 0x7ffe, 0x192, 0x7ffa, 0x25b,
|
||||
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|
||||
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|
||||
<a name="l00131"></a>00131 0x96b, 0x7fa7, 0x8a2, 0x7fb5, 0x7d9, 0x7fc2, 0x711, 0x7fce,
|
||||
<a name="l00132"></a>00132 0x648, 0x7fd9, 0x57f, 0x7fe2, 0x4b6, 0x7fea, 0x3ed, 0x7ff1,
|
||||
<a name="l00133"></a>00133 0x324, 0x7ff6, 0x25b, 0x7ffa, 0x192, 0x7ffe, 0xc9, 0x7fff,
|
||||
<a name="l00134"></a>00134 0x0, 0x7fff, 0xff37, 0x7fff, 0xfe6e, 0x7ffe, 0xfda5, 0x7ffa,
|
||||
<a name="l00135"></a>00135 0xfcdc, 0x7ff6, 0xfc13, 0x7ff1, 0xfb4a, 0x7fea, 0xfa81, 0x7fe2,
|
||||
<a name="l00136"></a>00136 0xf9b8, 0x7fd9, 0xf8ef, 0x7fce, 0xf827, 0x7fc2, 0xf75e, 0x7fb5,
|
||||
<a name="l00137"></a>00137 0xf695, 0x7fa7, 0xf5cd, 0x7f98, 0xf505, 0x7f87, 0xf43c, 0x7f75,
|
||||
<a name="l00138"></a>00138 0xf374, 0x7f62, 0xf2ac, 0x7f4e, 0xf1e4, 0x7f38, 0xf11c, 0x7f22,
|
||||
<a name="l00139"></a>00139 0xf055, 0x7f0a, 0xef8d, 0x7ef0, 0xeec6, 0x7ed6, 0xedff, 0x7eba,
|
||||
<a name="l00140"></a>00140 0xed38, 0x7e9d, 0xec71, 0x7e7f, 0xebab, 0x7e60, 0xeae4, 0x7e3f,
|
||||
<a name="l00141"></a>00141 0xea1e, 0x7e1e, 0xe958, 0x7dfb, 0xe892, 0x7dd6, 0xe7cd, 0x7db1,
|
||||
<a name="l00142"></a>00142 0xe707, 0x7d8a, 0xe642, 0x7d63, 0xe57d, 0x7d3a, 0xe4b9, 0x7d0f,
|
||||
<a name="l00143"></a>00143 0xe3f4, 0x7ce4, 0xe330, 0x7cb7, 0xe26d, 0x7c89, 0xe1a9, 0x7c5a,
|
||||
<a name="l00144"></a>00144 0xe0e6, 0x7c2a, 0xe023, 0x7bf9, 0xdf61, 0x7bc6, 0xde9e, 0x7b92,
|
||||
<a name="l00145"></a>00145 0xdddc, 0x7b5d, 0xdd1b, 0x7b27, 0xdc59, 0x7aef, 0xdb99, 0x7ab7,
|
||||
<a name="l00146"></a>00146 0xdad8, 0x7a7d, 0xda18, 0x7a42, 0xd958, 0x7a06, 0xd898, 0x79c9,
|
||||
<a name="l00147"></a>00147 0xd7d9, 0x798a, 0xd71b, 0x794a, 0xd65c, 0x790a, 0xd59e, 0x78c8,
|
||||
<a name="l00148"></a>00148 0xd4e1, 0x7885, 0xd424, 0x7840, 0xd367, 0x77fb, 0xd2ab, 0x77b4,
|
||||
<a name="l00149"></a>00149 0xd1ef, 0x776c, 0xd134, 0x7723, 0xd079, 0x76d9, 0xcfbe, 0x768e,
|
||||
<a name="l00150"></a>00150 0xcf04, 0x7642, 0xce4b, 0x75f4, 0xcd92, 0x75a6, 0xccd9, 0x7556,
|
||||
<a name="l00151"></a>00151 0xcc21, 0x7505, 0xcb69, 0x74b3, 0xcab2, 0x7460, 0xc9fc, 0x740b,
|
||||
<a name="l00152"></a>00152 0xc946, 0x73b6, 0xc890, 0x735f, 0xc7db, 0x7308, 0xc727, 0x72af,
|
||||
<a name="l00153"></a>00153 0xc673, 0x7255, 0xc5c0, 0x71fa, 0xc50d, 0x719e, 0xc45b, 0x7141,
|
||||
<a name="l00154"></a>00154 0xc3a9, 0x70e3, 0xc2f8, 0x7083, 0xc248, 0x7023, 0xc198, 0x6fc2,
|
||||
<a name="l00155"></a>00155 0xc0e9, 0x6f5f, 0xc03a, 0x6efb, 0xbf8c, 0x6e97, 0xbedf, 0x6e31,
|
||||
<a name="l00156"></a>00156 0xbe32, 0x6dca, 0xbd86, 0x6d62, 0xbcda, 0x6cf9, 0xbc2f, 0x6c8f,
|
||||
<a name="l00157"></a>00157 0xbb85, 0x6c24, 0xbadc, 0x6bb8, 0xba33, 0x6b4b, 0xb98b, 0x6add,
|
||||
<a name="l00158"></a>00158 0xb8e3, 0x6a6e, 0xb83c, 0x69fd, 0xb796, 0x698c, 0xb6f1, 0x691a,
|
||||
<a name="l00159"></a>00159 0xb64c, 0x68a7, 0xb5a8, 0x6832, 0xb505, 0x67bd, 0xb462, 0x6747,
|
||||
<a name="l00160"></a>00160 0xb3c0, 0x66d0, 0xb31f, 0x6657, 0xb27f, 0x65de, 0xb1df, 0x6564,
|
||||
<a name="l00161"></a>00161 0xb140, 0x64e9, 0xb0a2, 0x646c, 0xb005, 0x63ef, 0xaf68, 0x6371,
|
||||
<a name="l00162"></a>00162 0xaecc, 0x62f2, 0xae31, 0x6272, 0xad97, 0x61f1, 0xacfd, 0x616f,
|
||||
<a name="l00163"></a>00163 0xac65, 0x60ec, 0xabcd, 0x6068, 0xab36, 0x5fe4, 0xaaa0, 0x5f5e,
|
||||
<a name="l00164"></a>00164 0xaa0a, 0x5ed7, 0xa976, 0x5e50, 0xa8e2, 0x5dc8, 0xa84f, 0x5d3e,
|
||||
<a name="l00165"></a>00165 0xa7bd, 0x5cb4, 0xa72c, 0x5c29, 0xa69c, 0x5b9d, 0xa60c, 0x5b10,
|
||||
<a name="l00166"></a>00166 0xa57e, 0x5a82, 0xa4f0, 0x59f4, 0xa463, 0x5964, 0xa3d7, 0x58d4,
|
||||
<a name="l00167"></a>00167 0xa34c, 0x5843, 0xa2c2, 0x57b1, 0xa238, 0x571e, 0xa1b0, 0x568a,
|
||||
<a name="l00168"></a>00168 0xa129, 0x55f6, 0xa0a2, 0x5560, 0xa01c, 0x54ca, 0x9f98, 0x5433,
|
||||
<a name="l00169"></a>00169 0x9f14, 0x539b, 0x9e91, 0x5303, 0x9e0f, 0x5269, 0x9d8e, 0x51cf,
|
||||
<a name="l00170"></a>00170 0x9d0e, 0x5134, 0x9c8f, 0x5098, 0x9c11, 0x4ffb, 0x9b94, 0x4f5e,
|
||||
<a name="l00171"></a>00171 0x9b17, 0x4ec0, 0x9a9c, 0x4e21, 0x9a22, 0x4d81, 0x99a9, 0x4ce1,
|
||||
<a name="l00172"></a>00172 0x9930, 0x4c40, 0x98b9, 0x4b9e, 0x9843, 0x4afb, 0x97ce, 0x4a58,
|
||||
<a name="l00173"></a>00173 0x9759, 0x49b4, 0x96e6, 0x490f, 0x9674, 0x486a, 0x9603, 0x47c4,
|
||||
<a name="l00174"></a>00174 0x9592, 0x471d, 0x9523, 0x4675, 0x94b5, 0x45cd, 0x9448, 0x4524,
|
||||
<a name="l00175"></a>00175 0x93dc, 0x447b, 0x9371, 0x43d1, 0x9307, 0x4326, 0x929e, 0x427a,
|
||||
<a name="l00176"></a>00176 0x9236, 0x41ce, 0x91cf, 0x4121, 0x9169, 0x4074, 0x9105, 0x3fc6,
|
||||
<a name="l00177"></a>00177 0x90a1, 0x3f17, 0x903e, 0x3e68, 0x8fdd, 0x3db8, 0x8f7d, 0x3d08,
|
||||
<a name="l00178"></a>00178 0x8f1d, 0x3c57, 0x8ebf, 0x3ba5, 0x8e62, 0x3af3, 0x8e06, 0x3a40,
|
||||
<a name="l00179"></a>00179 0x8dab, 0x398d, 0x8d51, 0x38d9, 0x8cf8, 0x3825, 0x8ca1, 0x3770,
|
||||
<a name="l00180"></a>00180 0x8c4a, 0x36ba, 0x8bf5, 0x3604, 0x8ba0, 0x354e, 0x8b4d, 0x3497,
|
||||
<a name="l00181"></a>00181 0x8afb, 0x33df, 0x8aaa, 0x3327, 0x8a5a, 0x326e, 0x8a0c, 0x31b5,
|
||||
<a name="l00182"></a>00182 0x89be, 0x30fc, 0x8972, 0x3042, 0x8927, 0x2f87, 0x88dd, 0x2ecc,
|
||||
<a name="l00183"></a>00183 0x8894, 0x2e11, 0x884c, 0x2d55, 0x8805, 0x2c99, 0x87c0, 0x2bdc,
|
||||
<a name="l00184"></a>00184 0x877b, 0x2b1f, 0x8738, 0x2a62, 0x86f6, 0x29a4, 0x86b6, 0x28e5,
|
||||
<a name="l00185"></a>00185 0x8676, 0x2827, 0x8637, 0x2768, 0x85fa, 0x26a8, 0x85be, 0x25e8,
|
||||
<a name="l00186"></a>00186 0x8583, 0x2528, 0x8549, 0x2467, 0x8511, 0x23a7, 0x84d9, 0x22e5,
|
||||
<a name="l00187"></a>00187 0x84a3, 0x2224, 0x846e, 0x2162, 0x843a, 0x209f, 0x8407, 0x1fdd,
|
||||
<a name="l00188"></a>00188 0x83d6, 0x1f1a, 0x83a6, 0x1e57, 0x8377, 0x1d93, 0x8349, 0x1cd0,
|
||||
<a name="l00189"></a>00189 0x831c, 0x1c0c, 0x82f1, 0x1b47, 0x82c6, 0x1a83, 0x829d, 0x19be,
|
||||
<a name="l00190"></a>00190 0x8276, 0x18f9, 0x824f, 0x1833, 0x822a, 0x176e, 0x8205, 0x16a8,
|
||||
<a name="l00191"></a>00191 0x81e2, 0x15e2, 0x81c1, 0x151c, 0x81a0, 0x1455, 0x8181, 0x138f,
|
||||
<a name="l00192"></a>00192 0x8163, 0x12c8, 0x8146, 0x1201, 0x812a, 0x113a, 0x8110, 0x1073,
|
||||
<a name="l00193"></a>00193 0x80f6, 0xfab, 0x80de, 0xee4, 0x80c8, 0xe1c, 0x80b2, 0xd54,
|
||||
<a name="l00194"></a>00194 0x809e, 0xc8c, 0x808b, 0xbc4, 0x8079, 0xafb, 0x8068, 0xa33,
|
||||
<a name="l00195"></a>00195 0x8059, 0x96b, 0x804b, 0x8a2, 0x803e, 0x7d9, 0x8032, 0x711,
|
||||
<a name="l00196"></a>00196 0x8027, 0x648, 0x801e, 0x57f, 0x8016, 0x4b6, 0x800f, 0x3ed,
|
||||
<a name="l00197"></a>00197 0x800a, 0x324, 0x8006, 0x25b, 0x8002, 0x192, 0x8001, 0xc9,
|
||||
<a name="l00198"></a>00198 0x8000, 0x0, 0x8001, 0xff37, 0x8002, 0xfe6e, 0x8006, 0xfda5,
|
||||
<a name="l00199"></a>00199 0x800a, 0xfcdc, 0x800f, 0xfc13, 0x8016, 0xfb4a, 0x801e, 0xfa81,
|
||||
<a name="l00200"></a>00200 0x8027, 0xf9b8, 0x8032, 0xf8ef, 0x803e, 0xf827, 0x804b, 0xf75e,
|
||||
<a name="l00201"></a>00201 0x8059, 0xf695, 0x8068, 0xf5cd, 0x8079, 0xf505, 0x808b, 0xf43c,
|
||||
<a name="l00202"></a>00202 0x809e, 0xf374, 0x80b2, 0xf2ac, 0x80c8, 0xf1e4, 0x80de, 0xf11c,
|
||||
<a name="l00203"></a>00203 0x80f6, 0xf055, 0x8110, 0xef8d, 0x812a, 0xeec6, 0x8146, 0xedff,
|
||||
<a name="l00204"></a>00204 0x8163, 0xed38, 0x8181, 0xec71, 0x81a0, 0xebab, 0x81c1, 0xeae4,
|
||||
<a name="l00205"></a>00205 0x81e2, 0xea1e, 0x8205, 0xe958, 0x822a, 0xe892, 0x824f, 0xe7cd,
|
||||
<a name="l00206"></a>00206 0x8276, 0xe707, 0x829d, 0xe642, 0x82c6, 0xe57d, 0x82f1, 0xe4b9,
|
||||
<a name="l00207"></a>00207 0x831c, 0xe3f4, 0x8349, 0xe330, 0x8377, 0xe26d, 0x83a6, 0xe1a9,
|
||||
<a name="l00208"></a>00208 0x83d6, 0xe0e6, 0x8407, 0xe023, 0x843a, 0xdf61, 0x846e, 0xde9e,
|
||||
<a name="l00209"></a>00209 0x84a3, 0xdddc, 0x84d9, 0xdd1b, 0x8511, 0xdc59, 0x8549, 0xdb99,
|
||||
<a name="l00210"></a>00210 0x8583, 0xdad8, 0x85be, 0xda18, 0x85fa, 0xd958, 0x8637, 0xd898,
|
||||
<a name="l00211"></a>00211 0x8676, 0xd7d9, 0x86b6, 0xd71b, 0x86f6, 0xd65c, 0x8738, 0xd59e,
|
||||
<a name="l00212"></a>00212 0x877b, 0xd4e1, 0x87c0, 0xd424, 0x8805, 0xd367, 0x884c, 0xd2ab,
|
||||
<a name="l00213"></a>00213 0x8894, 0xd1ef, 0x88dd, 0xd134, 0x8927, 0xd079, 0x8972, 0xcfbe,
|
||||
<a name="l00214"></a>00214 0x89be, 0xcf04, 0x8a0c, 0xce4b, 0x8a5a, 0xcd92, 0x8aaa, 0xccd9,
|
||||
<a name="l00215"></a>00215 0x8afb, 0xcc21, 0x8b4d, 0xcb69, 0x8ba0, 0xcab2, 0x8bf5, 0xc9fc,
|
||||
<a name="l00216"></a>00216 0x8c4a, 0xc946, 0x8ca1, 0xc890, 0x8cf8, 0xc7db, 0x8d51, 0xc727,
|
||||
<a name="l00217"></a>00217 0x8dab, 0xc673, 0x8e06, 0xc5c0, 0x8e62, 0xc50d, 0x8ebf, 0xc45b,
|
||||
<a name="l00218"></a>00218 0x8f1d, 0xc3a9, 0x8f7d, 0xc2f8, 0x8fdd, 0xc248, 0x903e, 0xc198,
|
||||
<a name="l00219"></a>00219 0x90a1, 0xc0e9, 0x9105, 0xc03a, 0x9169, 0xbf8c, 0x91cf, 0xbedf,
|
||||
<a name="l00220"></a>00220 0x9236, 0xbe32, 0x929e, 0xbd86, 0x9307, 0xbcda, 0x9371, 0xbc2f,
|
||||
<a name="l00221"></a>00221 0x93dc, 0xbb85, 0x9448, 0xbadc, 0x94b5, 0xba33, 0x9523, 0xb98b,
|
||||
<a name="l00222"></a>00222 0x9592, 0xb8e3, 0x9603, 0xb83c, 0x9674, 0xb796, 0x96e6, 0xb6f1,
|
||||
<a name="l00223"></a>00223 0x9759, 0xb64c, 0x97ce, 0xb5a8, 0x9843, 0xb505, 0x98b9, 0xb462,
|
||||
<a name="l00224"></a>00224 0x9930, 0xb3c0, 0x99a9, 0xb31f, 0x9a22, 0xb27f, 0x9a9c, 0xb1df,
|
||||
<a name="l00225"></a>00225 0x9b17, 0xb140, 0x9b94, 0xb0a2, 0x9c11, 0xb005, 0x9c8f, 0xaf68,
|
||||
<a name="l00226"></a>00226 0x9d0e, 0xaecc, 0x9d8e, 0xae31, 0x9e0f, 0xad97, 0x9e91, 0xacfd,
|
||||
<a name="l00227"></a>00227 0x9f14, 0xac65, 0x9f98, 0xabcd, 0xa01c, 0xab36, 0xa0a2, 0xaaa0,
|
||||
<a name="l00228"></a>00228 0xa129, 0xaa0a, 0xa1b0, 0xa976, 0xa238, 0xa8e2, 0xa2c2, 0xa84f,
|
||||
<a name="l00229"></a>00229 0xa34c, 0xa7bd, 0xa3d7, 0xa72c, 0xa463, 0xa69c, 0xa4f0, 0xa60c,
|
||||
<a name="l00230"></a>00230 0xa57e, 0xa57e, 0xa60c, 0xa4f0, 0xa69c, 0xa463, 0xa72c, 0xa3d7,
|
||||
<a name="l00231"></a>00231 0xa7bd, 0xa34c, 0xa84f, 0xa2c2, 0xa8e2, 0xa238, 0xa976, 0xa1b0,
|
||||
<a name="l00232"></a>00232 0xaa0a, 0xa129, 0xaaa0, 0xa0a2, 0xab36, 0xa01c, 0xabcd, 0x9f98,
|
||||
<a name="l00233"></a>00233 0xac65, 0x9f14, 0xacfd, 0x9e91, 0xad97, 0x9e0f, 0xae31, 0x9d8e,
|
||||
<a name="l00234"></a>00234 0xaecc, 0x9d0e, 0xaf68, 0x9c8f, 0xb005, 0x9c11, 0xb0a2, 0x9b94,
|
||||
<a name="l00235"></a>00235 0xb140, 0x9b17, 0xb1df, 0x9a9c, 0xb27f, 0x9a22, 0xb31f, 0x99a9,
|
||||
<a name="l00236"></a>00236 0xb3c0, 0x9930, 0xb462, 0x98b9, 0xb505, 0x9843, 0xb5a8, 0x97ce,
|
||||
<a name="l00237"></a>00237 0xb64c, 0x9759, 0xb6f1, 0x96e6, 0xb796, 0x9674, 0xb83c, 0x9603,
|
||||
<a name="l00238"></a>00238 0xb8e3, 0x9592, 0xb98b, 0x9523, 0xba33, 0x94b5, 0xbadc, 0x9448,
|
||||
<a name="l00239"></a>00239 0xbb85, 0x93dc, 0xbc2f, 0x9371, 0xbcda, 0x9307, 0xbd86, 0x929e,
|
||||
<a name="l00240"></a>00240 0xbe32, 0x9236, 0xbedf, 0x91cf, 0xbf8c, 0x9169, 0xc03a, 0x9105,
|
||||
<a name="l00241"></a>00241 0xc0e9, 0x90a1, 0xc198, 0x903e, 0xc248, 0x8fdd, 0xc2f8, 0x8f7d,
|
||||
<a name="l00242"></a>00242 0xc3a9, 0x8f1d, 0xc45b, 0x8ebf, 0xc50d, 0x8e62, 0xc5c0, 0x8e06,
|
||||
<a name="l00243"></a>00243 0xc673, 0x8dab, 0xc727, 0x8d51, 0xc7db, 0x8cf8, 0xc890, 0x8ca1,
|
||||
<a name="l00244"></a>00244 0xc946, 0x8c4a, 0xc9fc, 0x8bf5, 0xcab2, 0x8ba0, 0xcb69, 0x8b4d,
|
||||
<a name="l00245"></a>00245 0xcc21, 0x8afb, 0xccd9, 0x8aaa, 0xcd92, 0x8a5a, 0xce4b, 0x8a0c,
|
||||
<a name="l00246"></a>00246 0xcf04, 0x89be, 0xcfbe, 0x8972, 0xd079, 0x8927, 0xd134, 0x88dd,
|
||||
<a name="l00247"></a>00247 0xd1ef, 0x8894, 0xd2ab, 0x884c, 0xd367, 0x8805, 0xd424, 0x87c0,
|
||||
<a name="l00248"></a>00248 0xd4e1, 0x877b, 0xd59e, 0x8738, 0xd65c, 0x86f6, 0xd71b, 0x86b6,
|
||||
<a name="l00249"></a>00249 0xd7d9, 0x8676, 0xd898, 0x8637, 0xd958, 0x85fa, 0xda18, 0x85be,
|
||||
<a name="l00250"></a>00250 0xdad8, 0x8583, 0xdb99, 0x8549, 0xdc59, 0x8511, 0xdd1b, 0x84d9,
|
||||
<a name="l00251"></a>00251 0xdddc, 0x84a3, 0xde9e, 0x846e, 0xdf61, 0x843a, 0xe023, 0x8407,
|
||||
<a name="l00252"></a>00252 0xe0e6, 0x83d6, 0xe1a9, 0x83a6, 0xe26d, 0x8377, 0xe330, 0x8349,
|
||||
<a name="l00253"></a>00253 0xe3f4, 0x831c, 0xe4b9, 0x82f1, 0xe57d, 0x82c6, 0xe642, 0x829d,
|
||||
<a name="l00254"></a>00254 0xe707, 0x8276, 0xe7cd, 0x824f, 0xe892, 0x822a, 0xe958, 0x8205,
|
||||
<a name="l00255"></a>00255 0xea1e, 0x81e2, 0xeae4, 0x81c1, 0xebab, 0x81a0, 0xec71, 0x8181,
|
||||
<a name="l00256"></a>00256 0xed38, 0x8163, 0xedff, 0x8146, 0xeec6, 0x812a, 0xef8d, 0x8110,
|
||||
<a name="l00257"></a>00257 0xf055, 0x80f6, 0xf11c, 0x80de, 0xf1e4, 0x80c8, 0xf2ac, 0x80b2,
|
||||
<a name="l00258"></a>00258 0xf374, 0x809e, 0xf43c, 0x808b, 0xf505, 0x8079, 0xf5cd, 0x8068,
|
||||
<a name="l00259"></a>00259 0xf695, 0x8059, 0xf75e, 0x804b, 0xf827, 0x803e, 0xf8ef, 0x8032,
|
||||
<a name="l00260"></a>00260 0xf9b8, 0x8027, 0xfa81, 0x801e, 0xfb4a, 0x8016, 0xfc13, 0x800f,
|
||||
<a name="l00261"></a>00261 0xfcdc, 0x800a, 0xfda5, 0x8006, 0xfe6e, 0x8002, 0xff37, 0x8001,
|
||||
<a name="l00262"></a>00262 0x0, 0x8000, 0xc9, 0x8001, 0x192, 0x8002, 0x25b, 0x8006,
|
||||
<a name="l00263"></a>00263 0x324, 0x800a, 0x3ed, 0x800f, 0x4b6, 0x8016, 0x57f, 0x801e,
|
||||
<a name="l00264"></a>00264 0x648, 0x8027, 0x711, 0x8032, 0x7d9, 0x803e, 0x8a2, 0x804b,
|
||||
<a name="l00265"></a>00265 0x96b, 0x8059, 0xa33, 0x8068, 0xafb, 0x8079, 0xbc4, 0x808b,
|
||||
<a name="l00266"></a>00266 0xc8c, 0x809e, 0xd54, 0x80b2, 0xe1c, 0x80c8, 0xee4, 0x80de,
|
||||
<a name="l00267"></a>00267 0xfab, 0x80f6, 0x1073, 0x8110, 0x113a, 0x812a, 0x1201, 0x8146,
|
||||
<a name="l00268"></a>00268 0x12c8, 0x8163, 0x138f, 0x8181, 0x1455, 0x81a0, 0x151c, 0x81c1,
|
||||
<a name="l00269"></a>00269 0x15e2, 0x81e2, 0x16a8, 0x8205, 0x176e, 0x822a, 0x1833, 0x824f,
|
||||
<a name="l00270"></a>00270 0x18f9, 0x8276, 0x19be, 0x829d, 0x1a83, 0x82c6, 0x1b47, 0x82f1,
|
||||
<a name="l00271"></a>00271 0x1c0c, 0x831c, 0x1cd0, 0x8349, 0x1d93, 0x8377, 0x1e57, 0x83a6,
|
||||
<a name="l00272"></a>00272 0x1f1a, 0x83d6, 0x1fdd, 0x8407, 0x209f, 0x843a, 0x2162, 0x846e,
|
||||
<a name="l00273"></a>00273 0x2224, 0x84a3, 0x22e5, 0x84d9, 0x23a7, 0x8511, 0x2467, 0x8549,
|
||||
<a name="l00274"></a>00274 0x2528, 0x8583, 0x25e8, 0x85be, 0x26a8, 0x85fa, 0x2768, 0x8637,
|
||||
<a name="l00275"></a>00275 0x2827, 0x8676, 0x28e5, 0x86b6, 0x29a4, 0x86f6, 0x2a62, 0x8738,
|
||||
<a name="l00276"></a>00276 0x2b1f, 0x877b, 0x2bdc, 0x87c0, 0x2c99, 0x8805, 0x2d55, 0x884c,
|
||||
<a name="l00277"></a>00277 0x2e11, 0x8894, 0x2ecc, 0x88dd, 0x2f87, 0x8927, 0x3042, 0x8972,
|
||||
<a name="l00278"></a>00278 0x30fc, 0x89be, 0x31b5, 0x8a0c, 0x326e, 0x8a5a, 0x3327, 0x8aaa,
|
||||
<a name="l00279"></a>00279 0x33df, 0x8afb, 0x3497, 0x8b4d, 0x354e, 0x8ba0, 0x3604, 0x8bf5,
|
||||
<a name="l00280"></a>00280 0x36ba, 0x8c4a, 0x3770, 0x8ca1, 0x3825, 0x8cf8, 0x38d9, 0x8d51,
|
||||
<a name="l00281"></a>00281 0x398d, 0x8dab, 0x3a40, 0x8e06, 0x3af3, 0x8e62, 0x3ba5, 0x8ebf,
|
||||
<a name="l00282"></a>00282 0x3c57, 0x8f1d, 0x3d08, 0x8f7d, 0x3db8, 0x8fdd, 0x3e68, 0x903e,
|
||||
<a name="l00283"></a>00283 0x3f17, 0x90a1, 0x3fc6, 0x9105, 0x4074, 0x9169, 0x4121, 0x91cf,
|
||||
<a name="l00284"></a>00284 0x41ce, 0x9236, 0x427a, 0x929e, 0x4326, 0x9307, 0x43d1, 0x9371,
|
||||
<a name="l00285"></a>00285 0x447b, 0x93dc, 0x4524, 0x9448, 0x45cd, 0x94b5, 0x4675, 0x9523,
|
||||
<a name="l00286"></a>00286 0x471d, 0x9592, 0x47c4, 0x9603, 0x486a, 0x9674, 0x490f, 0x96e6,
|
||||
<a name="l00287"></a>00287 0x49b4, 0x9759, 0x4a58, 0x97ce, 0x4afb, 0x9843, 0x4b9e, 0x98b9,
|
||||
<a name="l00288"></a>00288 0x4c40, 0x9930, 0x4ce1, 0x99a9, 0x4d81, 0x9a22, 0x4e21, 0x9a9c,
|
||||
<a name="l00289"></a>00289 0x4ec0, 0x9b17, 0x4f5e, 0x9b94, 0x4ffb, 0x9c11, 0x5098, 0x9c8f,
|
||||
<a name="l00290"></a>00290 0x5134, 0x9d0e, 0x51cf, 0x9d8e, 0x5269, 0x9e0f, 0x5303, 0x9e91,
|
||||
<a name="l00291"></a>00291 0x539b, 0x9f14, 0x5433, 0x9f98, 0x54ca, 0xa01c, 0x5560, 0xa0a2,
|
||||
<a name="l00292"></a>00292 0x55f6, 0xa129, 0x568a, 0xa1b0, 0x571e, 0xa238, 0x57b1, 0xa2c2,
|
||||
<a name="l00293"></a>00293 0x5843, 0xa34c, 0x58d4, 0xa3d7, 0x5964, 0xa463, 0x59f4, 0xa4f0,
|
||||
<a name="l00294"></a>00294 0x5a82, 0xa57e, 0x5b10, 0xa60c, 0x5b9d, 0xa69c, 0x5c29, 0xa72c,
|
||||
<a name="l00295"></a>00295 0x5cb4, 0xa7bd, 0x5d3e, 0xa84f, 0x5dc8, 0xa8e2, 0x5e50, 0xa976,
|
||||
<a name="l00296"></a>00296 0x5ed7, 0xaa0a, 0x5f5e, 0xaaa0, 0x5fe4, 0xab36, 0x6068, 0xabcd,
|
||||
<a name="l00297"></a>00297 0x60ec, 0xac65, 0x616f, 0xacfd, 0x61f1, 0xad97, 0x6272, 0xae31,
|
||||
<a name="l00298"></a>00298 0x62f2, 0xaecc, 0x6371, 0xaf68, 0x63ef, 0xb005, 0x646c, 0xb0a2,
|
||||
<a name="l00299"></a>00299 0x64e9, 0xb140, 0x6564, 0xb1df, 0x65de, 0xb27f, 0x6657, 0xb31f,
|
||||
<a name="l00300"></a>00300 0x66d0, 0xb3c0, 0x6747, 0xb462, 0x67bd, 0xb505, 0x6832, 0xb5a8,
|
||||
<a name="l00301"></a>00301 0x68a7, 0xb64c, 0x691a, 0xb6f1, 0x698c, 0xb796, 0x69fd, 0xb83c,
|
||||
<a name="l00302"></a>00302 0x6a6e, 0xb8e3, 0x6add, 0xb98b, 0x6b4b, 0xba33, 0x6bb8, 0xbadc,
|
||||
<a name="l00303"></a>00303 0x6c24, 0xbb85, 0x6c8f, 0xbc2f, 0x6cf9, 0xbcda, 0x6d62, 0xbd86,
|
||||
<a name="l00304"></a>00304 0x6dca, 0xbe32, 0x6e31, 0xbedf, 0x6e97, 0xbf8c, 0x6efb, 0xc03a,
|
||||
<a name="l00305"></a>00305 0x6f5f, 0xc0e9, 0x6fc2, 0xc198, 0x7023, 0xc248, 0x7083, 0xc2f8,
|
||||
<a name="l00306"></a>00306 0x70e3, 0xc3a9, 0x7141, 0xc45b, 0x719e, 0xc50d, 0x71fa, 0xc5c0,
|
||||
<a name="l00307"></a>00307 0x7255, 0xc673, 0x72af, 0xc727, 0x7308, 0xc7db, 0x735f, 0xc890,
|
||||
<a name="l00308"></a>00308 0x73b6, 0xc946, 0x740b, 0xc9fc, 0x7460, 0xcab2, 0x74b3, 0xcb69,
|
||||
<a name="l00309"></a>00309 0x7505, 0xcc21, 0x7556, 0xccd9, 0x75a6, 0xcd92, 0x75f4, 0xce4b,
|
||||
<a name="l00310"></a>00310 0x7642, 0xcf04, 0x768e, 0xcfbe, 0x76d9, 0xd079, 0x7723, 0xd134,
|
||||
<a name="l00311"></a>00311 0x776c, 0xd1ef, 0x77b4, 0xd2ab, 0x77fb, 0xd367, 0x7840, 0xd424,
|
||||
<a name="l00312"></a>00312 0x7885, 0xd4e1, 0x78c8, 0xd59e, 0x790a, 0xd65c, 0x794a, 0xd71b,
|
||||
<a name="l00313"></a>00313 0x798a, 0xd7d9, 0x79c9, 0xd898, 0x7a06, 0xd958, 0x7a42, 0xda18,
|
||||
<a name="l00314"></a>00314 0x7a7d, 0xdad8, 0x7ab7, 0xdb99, 0x7aef, 0xdc59, 0x7b27, 0xdd1b,
|
||||
<a name="l00315"></a>00315 0x7b5d, 0xdddc, 0x7b92, 0xde9e, 0x7bc6, 0xdf61, 0x7bf9, 0xe023,
|
||||
<a name="l00316"></a>00316 0x7c2a, 0xe0e6, 0x7c5a, 0xe1a9, 0x7c89, 0xe26d, 0x7cb7, 0xe330,
|
||||
<a name="l00317"></a>00317 0x7ce4, 0xe3f4, 0x7d0f, 0xe4b9, 0x7d3a, 0xe57d, 0x7d63, 0xe642,
|
||||
<a name="l00318"></a>00318 0x7d8a, 0xe707, 0x7db1, 0xe7cd, 0x7dd6, 0xe892, 0x7dfb, 0xe958,
|
||||
<a name="l00319"></a>00319 0x7e1e, 0xea1e, 0x7e3f, 0xeae4, 0x7e60, 0xebab, 0x7e7f, 0xec71,
|
||||
<a name="l00320"></a>00320 0x7e9d, 0xed38, 0x7eba, 0xedff, 0x7ed6, 0xeec6, 0x7ef0, 0xef8d,
|
||||
<a name="l00321"></a>00321 0x7f0a, 0xf055, 0x7f22, 0xf11c, 0x7f38, 0xf1e4, 0x7f4e, 0xf2ac,
|
||||
<a name="l00322"></a>00322 0x7f62, 0xf374, 0x7f75, 0xf43c, 0x7f87, 0xf505, 0x7f98, 0xf5cd,
|
||||
<a name="l00323"></a>00323 0x7fa7, 0xf695, 0x7fb5, 0xf75e, 0x7fc2, 0xf827, 0x7fce, 0xf8ef,
|
||||
<a name="l00324"></a>00324 0x7fd9, 0xf9b8, 0x7fe2, 0xfa81, 0x7fea, 0xfb4a, 0x7ff1, 0xfc13,
|
||||
<a name="l00325"></a>00325 0x7ff6, 0xfcdc, 0x7ffa, 0xfda5, 0x7ffe, 0xfe6e, 0x7fff, 0xff37
|
||||
<a name="l00326"></a>00326 };
|
||||
<a name="l00327"></a>00327
|
||||
<a name="l00328"></a>00328
|
||||
<a name="l00350"></a><a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga0c2acfda3126c452e75b81669e8ad9ef">00350</a> <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga0c2acfda3126c452e75b81669e8ad9ef" title="Initialization function for the Q15 CFFT/CIFFT.">arm_cfft_radix4_init_q15</a>(
|
||||
<a name="l00351"></a>00351 <a class="code" href="structarm__cfft__radix4__instance__q15.html" title="Instance structure for the Q15 CFFT/CIFFT function.">arm_cfft_radix4_instance_q15</a> * S,
|
||||
<a name="l00352"></a>00352 uint16_t fftLen,
|
||||
<a name="l00353"></a>00353 uint8_t <a class="code" href="arm__fft__bin__example__f32_8c.html#a379ccb99013d369a41b49619083c16ef">ifftFlag</a>,
|
||||
<a name="l00354"></a>00354 uint8_t bitReverseFlag)
|
||||
<a name="l00355"></a>00355 {
|
||||
<a name="l00356"></a>00356 <span class="comment">/* Initialise the default arm status */</span>
|
||||
<a name="l00357"></a>00357 <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> status = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>;
|
||||
<a name="l00358"></a>00358 <span class="comment">/* Initialise the FFT length */</span>
|
||||
<a name="l00359"></a>00359 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a5fc543e7d84ca8cb7cf6648970f21ca6">fftLen</a> = fftLen;
|
||||
<a name="l00360"></a>00360 <span class="comment">/* Initialise the Twiddle coefficient pointer */</span>
|
||||
<a name="l00361"></a>00361 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a29dd693537e45421a36891f8439e1fba">pTwiddle</a> = (<a class="code" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea" title="16-bit fractional data type in 1.15 format.">q15_t</a> *) <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#ga5a1667c1f9ffa6b40cddb90034d7d3b0">twiddleCoefQ15</a>;
|
||||
<a name="l00362"></a>00362 <span class="comment">/* Initialise the Flag for selection of CFFT or CIFFT */</span>
|
||||
<a name="l00363"></a>00363 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a2ecff6ea735cb4d22e922d0fd5736655">ifftFlag</a> = <a class="code" href="arm__fft__bin__example__f32_8c.html#a379ccb99013d369a41b49619083c16ef">ifftFlag</a>;
|
||||
<a name="l00364"></a>00364 <span class="comment">/* Initialise the Flag for calculation Bit reversal or not */</span>
|
||||
<a name="l00365"></a>00365 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a101e3f7b0bd6b5b14cd5214f23df4133">bitReverseFlag</a> = bitReverseFlag;
|
||||
<a name="l00366"></a>00366
|
||||
<a name="l00367"></a>00367 <span class="comment">/* Initializations of structure parameters depending on the FFT length */</span>
|
||||
<a name="l00368"></a>00368 <span class="keywordflow">switch</span> (S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a5fc543e7d84ca8cb7cf6648970f21ca6">fftLen</a>)
|
||||
<a name="l00369"></a>00369 {
|
||||
<a name="l00370"></a>00370 <span class="comment">/* Initializations of structure parameters for 1024 point FFT */</span>
|
||||
<a name="l00371"></a>00371 <span class="keywordflow">case</span> 1024u:
|
||||
<a name="l00372"></a>00372 <span class="comment">/* Initialise the twiddle coef modifier value */</span>
|
||||
<a name="l00373"></a>00373 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#af32fdc78bcc27ca385f9b76a0a1f71c3">twidCoefModifier</a> = 1u;
|
||||
<a name="l00374"></a>00374 <span class="comment">/* Initialise the bit reversal table modifier */</span>
|
||||
<a name="l00375"></a>00375 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a6b010e5f02d1130c621e3d2e26b95df1">bitRevFactor</a> = 1u;
|
||||
<a name="l00376"></a>00376 <span class="comment">/* Initialise the bit reversal table pointer */</span>
|
||||
<a name="l00377"></a>00377 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a4acf704ae0cf30b53bf0fbfae8e34a59">pBitRevTable</a> = <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>;
|
||||
<a name="l00378"></a>00378
|
||||
<a name="l00379"></a>00379 <span class="keywordflow">break</span>;
|
||||
<a name="l00380"></a>00380 <span class="keywordflow">case</span> 256u:
|
||||
<a name="l00381"></a>00381 <span class="comment">/* Initializations of structure parameters for 2566 point FFT */</span>
|
||||
<a name="l00382"></a>00382 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#af32fdc78bcc27ca385f9b76a0a1f71c3">twidCoefModifier</a> = 4u;
|
||||
<a name="l00383"></a>00383 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a6b010e5f02d1130c621e3d2e26b95df1">bitRevFactor</a> = 4u;
|
||||
<a name="l00384"></a>00384 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a4acf704ae0cf30b53bf0fbfae8e34a59">pBitRevTable</a> = &<a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>[3];
|
||||
<a name="l00385"></a>00385
|
||||
<a name="l00386"></a>00386 <span class="keywordflow">break</span>;
|
||||
<a name="l00387"></a>00387 <span class="keywordflow">case</span> 64u:
|
||||
<a name="l00388"></a>00388 <span class="comment">/* Initializations of structure parameters for 64 point FFT */</span>
|
||||
<a name="l00389"></a>00389 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#af32fdc78bcc27ca385f9b76a0a1f71c3">twidCoefModifier</a> = 16u;
|
||||
<a name="l00390"></a>00390 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a6b010e5f02d1130c621e3d2e26b95df1">bitRevFactor</a> = 16u;
|
||||
<a name="l00391"></a>00391 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a4acf704ae0cf30b53bf0fbfae8e34a59">pBitRevTable</a> = &<a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>[15];
|
||||
<a name="l00392"></a>00392
|
||||
<a name="l00393"></a>00393 <span class="keywordflow">break</span>;
|
||||
<a name="l00394"></a>00394 <span class="keywordflow">case</span> 16u:
|
||||
<a name="l00395"></a>00395 <span class="comment">/* Initializations of structure parameters for 16 point FFT */</span>
|
||||
<a name="l00396"></a>00396 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#af32fdc78bcc27ca385f9b76a0a1f71c3">twidCoefModifier</a> = 64u;
|
||||
<a name="l00397"></a>00397 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a6b010e5f02d1130c621e3d2e26b95df1">bitRevFactor</a> = 64u;
|
||||
<a name="l00398"></a>00398 S-><a class="code" href="structarm__cfft__radix4__instance__q15.html#a4acf704ae0cf30b53bf0fbfae8e34a59">pBitRevTable</a> = &<a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>[63];
|
||||
<a name="l00399"></a>00399
|
||||
<a name="l00400"></a>00400 <span class="keywordflow">break</span>;
|
||||
<a name="l00401"></a>00401 <span class="keywordflow">default</span>:
|
||||
<a name="l00402"></a>00402 <span class="comment">/* Reporting argument error if fftSize is not valid value */</span>
|
||||
<a name="l00403"></a>00403 status = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a74897e18d4b8f62b12a7d8a01dd2bb35">ARM_MATH_ARGUMENT_ERROR</a>;
|
||||
<a name="l00404"></a>00404 <span class="keywordflow">break</span>;
|
||||
<a name="l00405"></a>00405 }
|
||||
<a name="l00406"></a>00406
|
||||
<a name="l00407"></a>00407 <span class="keywordflow">return</span> (status);
|
||||
<a name="l00408"></a>00408 }
|
||||
<a name="l00409"></a>00409
|
||||
</pre></div></div>
|
||||
</div>
|
||||
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|
||||
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|
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onmouseout="return searchBox.OnSearchSelectHide()"
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<code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
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Variables</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gaaff0656425a80136572711cefae9800f">twiddleCoefQ31</a> [2048]</td></tr>
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||||
<a href="arm__cfft__radix4__init__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
|
||||
<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
|
||||
<a name="l00003"></a>00003 <span class="comment">* </span>
|
||||
<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
|
||||
<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
|
||||
<a name="l00006"></a>00006 <span class="comment">* </span>
|
||||
<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
|
||||
<a name="l00008"></a>00008 <span class="comment">* Title: arm_cfft_radix4_init_q31.c </span>
|
||||
<a name="l00009"></a>00009 <span class="comment">* </span>
|
||||
<a name="l00010"></a>00010 <span class="comment">* Description: Radix-4 Decimation in Frequency Q31 FFT & IFFT initialization function </span>
|
||||
<a name="l00011"></a>00011 <span class="comment">* </span>
|
||||
<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span>
|
||||
<a name="l00013"></a>00013 <span class="comment">* </span>
|
||||
<a name="l00014"></a>00014 <span class="comment">* Version 1.0.3 2010/11/29 </span>
|
||||
<a name="l00015"></a>00015 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
|
||||
<a name="l00016"></a>00016 <span class="comment">* </span>
|
||||
<a name="l00017"></a>00017 <span class="comment">* Version 1.0.2 2010/11/11 </span>
|
||||
<a name="l00018"></a>00018 <span class="comment">* Documentation updated. </span>
|
||||
<a name="l00019"></a>00019 <span class="comment">* </span>
|
||||
<a name="l00020"></a>00020 <span class="comment">* Version 1.0.1 2010/10/05 </span>
|
||||
<a name="l00021"></a>00021 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00022"></a>00022 <span class="comment">* </span>
|
||||
<a name="l00023"></a>00023 <span class="comment">* Version 1.0.0 2010/09/20 </span>
|
||||
<a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span>
|
||||
<a name="l00025"></a>00025 <span class="comment">* </span>
|
||||
<a name="l00026"></a>00026 <span class="comment">* Version 0.0.5 2010/04/26 </span>
|
||||
<a name="l00027"></a>00027 <span class="comment">* incorporated review comments and updated with latest CMSIS layer </span>
|
||||
<a name="l00028"></a>00028 <span class="comment">* </span>
|
||||
<a name="l00029"></a>00029 <span class="comment">* Version 0.0.3 2010/03/10 </span>
|
||||
<a name="l00030"></a>00030 <span class="comment">* Initial version </span>
|
||||
<a name="l00031"></a>00031 <span class="comment">* -------------------------------------------------------------------- */</span>
|
||||
<a name="l00032"></a>00032
|
||||
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
|
||||
<a name="l00034"></a>00034 <span class="preprocessor">#include "arm_common_tables.h"</span>
|
||||
<a name="l00035"></a>00035
|
||||
<a name="l00045"></a>00045 <span class="comment">/* </span>
|
||||
<a name="l00046"></a>00046 <span class="comment">* @brief Twiddle factors Table </span>
|
||||
<a name="l00047"></a>00047 <span class="comment">*/</span>
|
||||
<a name="l00048"></a>00048
|
||||
<a name="l00068"></a><a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaff0656425a80136572711cefae9800f">00068</a> <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaff0656425a80136572711cefae9800f">twiddleCoefQ31</a>[2048] = {
|
||||
<a name="l00069"></a>00069 0x7fffffff, 0x0, 0x7fff6216, 0xc90f88, 0x7ffd885a, 0x1921d20, 0x7ffa72d1,
|
||||
<a name="l00070"></a>00070 0x25b26d7,
|
||||
<a name="l00071"></a>00071 0x7ff62182, 0x3242abf, 0x7ff09478, 0x3ed26e6, 0x7fe9cbc0, 0x4b6195d,
|
||||
<a name="l00072"></a>00072 0x7fe1c76b, 0x57f0035,
|
||||
<a name="l00073"></a>00073 0x7fd8878e, 0x647d97c, 0x7fce0c3e, 0x710a345, 0x7fc25596, 0x7d95b9e,
|
||||
<a name="l00074"></a>00074 0x7fb563b3, 0x8a2009a,
|
||||
<a name="l00075"></a>00075 0x7fa736b4, 0x96a9049, 0x7f97cebd, 0xa3308bd, 0x7f872bf3, 0xafb6805,
|
||||
<a name="l00076"></a>00076 0x7f754e80, 0xbc3ac35,
|
||||
<a name="l00077"></a>00077 0x7f62368f, 0xc8bd35e, 0x7f4de451, 0xd53db92, 0x7f3857f6, 0xe1bc2e4,
|
||||
<a name="l00078"></a>00078 0x7f2191b4, 0xee38766,
|
||||
<a name="l00079"></a>00079 0x7f0991c4, 0xfab272b, 0x7ef05860, 0x1072a048, 0x7ed5e5c6, 0x1139f0cf,
|
||||
<a name="l00080"></a>00080 0x7eba3a39, 0x120116d5,
|
||||
<a name="l00081"></a>00081 0x7e9d55fc, 0x12c8106f, 0x7e7f3957, 0x138edbb1, 0x7e5fe493, 0x145576b1,
|
||||
<a name="l00082"></a>00082 0x7e3f57ff, 0x151bdf86,
|
||||
<a name="l00083"></a>00083 0x7e1d93ea, 0x15e21445, 0x7dfa98a8, 0x16a81305, 0x7dd6668f, 0x176dd9de,
|
||||
<a name="l00084"></a>00084 0x7db0fdf8, 0x183366e9,
|
||||
<a name="l00085"></a>00085 0x7d8a5f40, 0x18f8b83c, 0x7d628ac6, 0x19bdcbf3, 0x7d3980ec, 0x1a82a026,
|
||||
<a name="l00086"></a>00086 0x7d0f4218, 0x1b4732ef,
|
||||
<a name="l00087"></a>00087 0x7ce3ceb2, 0x1c0b826a, 0x7cb72724, 0x1ccf8cb3, 0x7c894bde, 0x1d934fe5,
|
||||
<a name="l00088"></a>00088 0x7c5a3d50, 0x1e56ca1e,
|
||||
<a name="l00089"></a>00089 0x7c29fbee, 0x1f19f97b, 0x7bf88830, 0x1fdcdc1b, 0x7bc5e290, 0x209f701c,
|
||||
<a name="l00090"></a>00090 0x7b920b89, 0x2161b3a0,
|
||||
<a name="l00091"></a>00091 0x7b5d039e, 0x2223a4c5, 0x7b26cb4f, 0x22e541af, 0x7aef6323, 0x23a6887f,
|
||||
<a name="l00092"></a>00092 0x7ab6cba4, 0x24677758,
|
||||
<a name="l00093"></a>00093 0x7a7d055b, 0x25280c5e, 0x7a4210d8, 0x25e845b6, 0x7a05eead, 0x26a82186,
|
||||
<a name="l00094"></a>00094 0x79c89f6e, 0x27679df4,
|
||||
<a name="l00095"></a>00095 0x798a23b1, 0x2826b928, 0x794a7c12, 0x28e5714b, 0x7909a92d, 0x29a3c485,
|
||||
<a name="l00096"></a>00096 0x78c7aba2, 0x2a61b101,
|
||||
<a name="l00097"></a>00097 0x78848414, 0x2b1f34eb, 0x78403329, 0x2bdc4e6f, 0x77fab989, 0x2c98fbba,
|
||||
<a name="l00098"></a>00098 0x77b417df, 0x2d553afc,
|
||||
<a name="l00099"></a>00099 0x776c4edb, 0x2e110a62, 0x77235f2d, 0x2ecc681e, 0x76d94989, 0x2f875262,
|
||||
<a name="l00100"></a>00100 0x768e0ea6, 0x3041c761,
|
||||
<a name="l00101"></a>00101 0x7641af3d, 0x30fbc54d, 0x75f42c0b, 0x31b54a5e, 0x75a585cf, 0x326e54c7,
|
||||
<a name="l00102"></a>00102 0x7555bd4c, 0x3326e2c3,
|
||||
<a name="l00103"></a>00103 0x7504d345, 0x33def287, 0x74b2c884, 0x34968250, 0x745f9dd1, 0x354d9057,
|
||||
<a name="l00104"></a>00104 0x740b53fb, 0x36041ad9,
|
||||
<a name="l00105"></a>00105 0x73b5ebd1, 0x36ba2014, 0x735f6626, 0x376f9e46, 0x7307c3d0, 0x382493b0,
|
||||
<a name="l00106"></a>00106 0x72af05a7, 0x38d8fe93,
|
||||
<a name="l00107"></a>00107 0x72552c85, 0x398cdd32, 0x71fa3949, 0x3a402dd2, 0x719e2cd2, 0x3af2eeb7,
|
||||
<a name="l00108"></a>00108 0x71410805, 0x3ba51e29,
|
||||
<a name="l00109"></a>00109 0x70e2cbc6, 0x3c56ba70, 0x708378ff, 0x3d07c1d6, 0x7023109a, 0x3db832a6,
|
||||
<a name="l00110"></a>00110 0x6fc19385, 0x3e680b2c,
|
||||
<a name="l00111"></a>00111 0x6f5f02b2, 0x3f1749b8, 0x6efb5f12, 0x3fc5ec98, 0x6e96a99d, 0x4073f21d,
|
||||
<a name="l00112"></a>00112 0x6e30e34a, 0x4121589b,
|
||||
<a name="l00113"></a>00113 0x6dca0d14, 0x41ce1e65, 0x6d6227fa, 0x427a41d0, 0x6cf934fc, 0x4325c135,
|
||||
<a name="l00114"></a>00114 0x6c8f351c, 0x43d09aed,
|
||||
<a name="l00115"></a>00115 0x6c242960, 0x447acd50, 0x6bb812d1, 0x452456bd, 0x6b4af279, 0x45cd358f,
|
||||
<a name="l00116"></a>00116 0x6adcc964, 0x46756828,
|
||||
<a name="l00117"></a>00117 0x6a6d98a4, 0x471cece7, 0x69fd614a, 0x47c3c22f, 0x698c246c, 0x4869e665,
|
||||
<a name="l00118"></a>00118 0x6919e320, 0x490f57ee,
|
||||
<a name="l00119"></a>00119 0x68a69e81, 0x49b41533, 0x683257ab, 0x4a581c9e, 0x67bd0fbd, 0x4afb6c98,
|
||||
<a name="l00120"></a>00120 0x6746c7d8, 0x4b9e0390,
|
||||
<a name="l00121"></a>00121 0x66cf8120, 0x4c3fdff4, 0x66573cbb, 0x4ce10034, 0x65ddfbd3, 0x4d8162c4,
|
||||
<a name="l00122"></a>00122 0x6563bf92, 0x4e210617,
|
||||
<a name="l00123"></a>00123 0x64e88926, 0x4ebfe8a5, 0x646c59bf, 0x4f5e08e3, 0x63ef3290, 0x4ffb654d,
|
||||
<a name="l00124"></a>00124 0x637114cc, 0x5097fc5e,
|
||||
<a name="l00125"></a>00125 0x62f201ac, 0x5133cc94, 0x6271fa69, 0x51ced46e, 0x61f1003f, 0x5269126e,
|
||||
<a name="l00126"></a>00126 0x616f146c, 0x53028518,
|
||||
<a name="l00127"></a>00127 0x60ec3830, 0x539b2af0, 0x60686ccf, 0x5433027d, 0x5fe3b38d, 0x54ca0a4b,
|
||||
<a name="l00128"></a>00128 0x5f5e0db3, 0x556040e2,
|
||||
<a name="l00129"></a>00129 0x5ed77c8a, 0x55f5a4d2, 0x5e50015d, 0x568a34a9, 0x5dc79d7c, 0x571deefa,
|
||||
<a name="l00130"></a>00130 0x5d3e5237, 0x57b0d256,
|
||||
<a name="l00131"></a>00131 0x5cb420e0, 0x5842dd54, 0x5c290acc, 0x58d40e8c, 0x5b9d1154, 0x59646498,
|
||||
<a name="l00132"></a>00132 0x5b1035cf, 0x59f3de12,
|
||||
<a name="l00133"></a>00133 0x5a82799a, 0x5a82799a, 0x59f3de12, 0x5b1035cf, 0x59646498, 0x5b9d1154,
|
||||
<a name="l00134"></a>00134 0x58d40e8c, 0x5c290acc,
|
||||
<a name="l00135"></a>00135 0x5842dd54, 0x5cb420e0, 0x57b0d256, 0x5d3e5237, 0x571deefa, 0x5dc79d7c,
|
||||
<a name="l00136"></a>00136 0x568a34a9, 0x5e50015d,
|
||||
<a name="l00137"></a>00137 0x55f5a4d2, 0x5ed77c8a, 0x556040e2, 0x5f5e0db3, 0x54ca0a4b, 0x5fe3b38d,
|
||||
<a name="l00138"></a>00138 0x5433027d, 0x60686ccf,
|
||||
<a name="l00139"></a>00139 0x539b2af0, 0x60ec3830, 0x53028518, 0x616f146c, 0x5269126e, 0x61f1003f,
|
||||
<a name="l00140"></a>00140 0x51ced46e, 0x6271fa69,
|
||||
<a name="l00141"></a>00141 0x5133cc94, 0x62f201ac, 0x5097fc5e, 0x637114cc, 0x4ffb654d, 0x63ef3290,
|
||||
<a name="l00142"></a>00142 0x4f5e08e3, 0x646c59bf,
|
||||
<a name="l00143"></a>00143 0x4ebfe8a5, 0x64e88926, 0x4e210617, 0x6563bf92, 0x4d8162c4, 0x65ddfbd3,
|
||||
<a name="l00144"></a>00144 0x4ce10034, 0x66573cbb,
|
||||
<a name="l00145"></a>00145 0x4c3fdff4, 0x66cf8120, 0x4b9e0390, 0x6746c7d8, 0x4afb6c98, 0x67bd0fbd,
|
||||
<a name="l00146"></a>00146 0x4a581c9e, 0x683257ab,
|
||||
<a name="l00147"></a>00147 0x49b41533, 0x68a69e81, 0x490f57ee, 0x6919e320, 0x4869e665, 0x698c246c,
|
||||
<a name="l00148"></a>00148 0x47c3c22f, 0x69fd614a,
|
||||
<a name="l00149"></a>00149 0x471cece7, 0x6a6d98a4, 0x46756828, 0x6adcc964, 0x45cd358f, 0x6b4af279,
|
||||
<a name="l00150"></a>00150 0x452456bd, 0x6bb812d1,
|
||||
<a name="l00151"></a>00151 0x447acd50, 0x6c242960, 0x43d09aed, 0x6c8f351c, 0x4325c135, 0x6cf934fc,
|
||||
<a name="l00152"></a>00152 0x427a41d0, 0x6d6227fa,
|
||||
<a name="l00153"></a>00153 0x41ce1e65, 0x6dca0d14, 0x4121589b, 0x6e30e34a, 0x4073f21d, 0x6e96a99d,
|
||||
<a name="l00154"></a>00154 0x3fc5ec98, 0x6efb5f12,
|
||||
<a name="l00155"></a>00155 0x3f1749b8, 0x6f5f02b2, 0x3e680b2c, 0x6fc19385, 0x3db832a6, 0x7023109a,
|
||||
<a name="l00156"></a>00156 0x3d07c1d6, 0x708378ff,
|
||||
<a name="l00157"></a>00157 0x3c56ba70, 0x70e2cbc6, 0x3ba51e29, 0x71410805, 0x3af2eeb7, 0x719e2cd2,
|
||||
<a name="l00158"></a>00158 0x3a402dd2, 0x71fa3949,
|
||||
<a name="l00159"></a>00159 0x398cdd32, 0x72552c85, 0x38d8fe93, 0x72af05a7, 0x382493b0, 0x7307c3d0,
|
||||
<a name="l00160"></a>00160 0x376f9e46, 0x735f6626,
|
||||
<a name="l00161"></a>00161 0x36ba2014, 0x73b5ebd1, 0x36041ad9, 0x740b53fb, 0x354d9057, 0x745f9dd1,
|
||||
<a name="l00162"></a>00162 0x34968250, 0x74b2c884,
|
||||
<a name="l00163"></a>00163 0x33def287, 0x7504d345, 0x3326e2c3, 0x7555bd4c, 0x326e54c7, 0x75a585cf,
|
||||
<a name="l00164"></a>00164 0x31b54a5e, 0x75f42c0b,
|
||||
<a name="l00165"></a>00165 0x30fbc54d, 0x7641af3d, 0x3041c761, 0x768e0ea6, 0x2f875262, 0x76d94989,
|
||||
<a name="l00166"></a>00166 0x2ecc681e, 0x77235f2d,
|
||||
<a name="l00167"></a>00167 0x2e110a62, 0x776c4edb, 0x2d553afc, 0x77b417df, 0x2c98fbba, 0x77fab989,
|
||||
<a name="l00168"></a>00168 0x2bdc4e6f, 0x78403329,
|
||||
<a name="l00169"></a>00169 0x2b1f34eb, 0x78848414, 0x2a61b101, 0x78c7aba2, 0x29a3c485, 0x7909a92d,
|
||||
<a name="l00170"></a>00170 0x28e5714b, 0x794a7c12,
|
||||
<a name="l00171"></a>00171 0x2826b928, 0x798a23b1, 0x27679df4, 0x79c89f6e, 0x26a82186, 0x7a05eead,
|
||||
<a name="l00172"></a>00172 0x25e845b6, 0x7a4210d8,
|
||||
<a name="l00173"></a>00173 0x25280c5e, 0x7a7d055b, 0x24677758, 0x7ab6cba4, 0x23a6887f, 0x7aef6323,
|
||||
<a name="l00174"></a>00174 0x22e541af, 0x7b26cb4f,
|
||||
<a name="l00175"></a>00175 0x2223a4c5, 0x7b5d039e, 0x2161b3a0, 0x7b920b89, 0x209f701c, 0x7bc5e290,
|
||||
<a name="l00176"></a>00176 0x1fdcdc1b, 0x7bf88830,
|
||||
<a name="l00177"></a>00177 0x1f19f97b, 0x7c29fbee, 0x1e56ca1e, 0x7c5a3d50, 0x1d934fe5, 0x7c894bde,
|
||||
<a name="l00178"></a>00178 0x1ccf8cb3, 0x7cb72724,
|
||||
<a name="l00179"></a>00179 0x1c0b826a, 0x7ce3ceb2, 0x1b4732ef, 0x7d0f4218, 0x1a82a026, 0x7d3980ec,
|
||||
<a name="l00180"></a>00180 0x19bdcbf3, 0x7d628ac6,
|
||||
<a name="l00181"></a>00181 0x18f8b83c, 0x7d8a5f40, 0x183366e9, 0x7db0fdf8, 0x176dd9de, 0x7dd6668f,
|
||||
<a name="l00182"></a>00182 0x16a81305, 0x7dfa98a8,
|
||||
<a name="l00183"></a>00183 0x15e21445, 0x7e1d93ea, 0x151bdf86, 0x7e3f57ff, 0x145576b1, 0x7e5fe493,
|
||||
<a name="l00184"></a>00184 0x138edbb1, 0x7e7f3957,
|
||||
<a name="l00185"></a>00185 0x12c8106f, 0x7e9d55fc, 0x120116d5, 0x7eba3a39, 0x1139f0cf, 0x7ed5e5c6,
|
||||
<a name="l00186"></a>00186 0x1072a048, 0x7ef05860,
|
||||
<a name="l00187"></a>00187 0xfab272b, 0x7f0991c4, 0xee38766, 0x7f2191b4, 0xe1bc2e4, 0x7f3857f6,
|
||||
<a name="l00188"></a>00188 0xd53db92, 0x7f4de451,
|
||||
<a name="l00189"></a>00189 0xc8bd35e, 0x7f62368f, 0xbc3ac35, 0x7f754e80, 0xafb6805, 0x7f872bf3,
|
||||
<a name="l00190"></a>00190 0xa3308bd, 0x7f97cebd,
|
||||
<a name="l00191"></a>00191 0x96a9049, 0x7fa736b4, 0x8a2009a, 0x7fb563b3, 0x7d95b9e, 0x7fc25596,
|
||||
<a name="l00192"></a>00192 0x710a345, 0x7fce0c3e,
|
||||
<a name="l00193"></a>00193 0x647d97c, 0x7fd8878e, 0x57f0035, 0x7fe1c76b, 0x4b6195d, 0x7fe9cbc0,
|
||||
<a name="l00194"></a>00194 0x3ed26e6, 0x7ff09478,
|
||||
<a name="l00195"></a>00195 0x3242abf, 0x7ff62182, 0x25b26d7, 0x7ffa72d1, 0x1921d20, 0x7ffd885a,
|
||||
<a name="l00196"></a>00196 0xc90f88, 0x7fff6216,
|
||||
<a name="l00197"></a>00197 0x0, 0x7fffffff, 0xff36f078, 0x7fff6216, 0xfe6de2e0, 0x7ffd885a, 0xfda4d929,
|
||||
<a name="l00198"></a>00198 0x7ffa72d1,
|
||||
<a name="l00199"></a>00199 0xfcdbd541, 0x7ff62182, 0xfc12d91a, 0x7ff09478, 0xfb49e6a3, 0x7fe9cbc0,
|
||||
<a name="l00200"></a>00200 0xfa80ffcb, 0x7fe1c76b,
|
||||
<a name="l00201"></a>00201 0xf9b82684, 0x7fd8878e, 0xf8ef5cbb, 0x7fce0c3e, 0xf826a462, 0x7fc25596,
|
||||
<a name="l00202"></a>00202 0xf75dff66, 0x7fb563b3,
|
||||
<a name="l00203"></a>00203 0xf6956fb7, 0x7fa736b4, 0xf5ccf743, 0x7f97cebd, 0xf50497fb, 0x7f872bf3,
|
||||
<a name="l00204"></a>00204 0xf43c53cb, 0x7f754e80,
|
||||
<a name="l00205"></a>00205 0xf3742ca2, 0x7f62368f, 0xf2ac246e, 0x7f4de451, 0xf1e43d1c, 0x7f3857f6,
|
||||
<a name="l00206"></a>00206 0xf11c789a, 0x7f2191b4,
|
||||
<a name="l00207"></a>00207 0xf054d8d5, 0x7f0991c4, 0xef8d5fb8, 0x7ef05860, 0xeec60f31, 0x7ed5e5c6,
|
||||
<a name="l00208"></a>00208 0xedfee92b, 0x7eba3a39,
|
||||
<a name="l00209"></a>00209 0xed37ef91, 0x7e9d55fc, 0xec71244f, 0x7e7f3957, 0xebaa894f, 0x7e5fe493,
|
||||
<a name="l00210"></a>00210 0xeae4207a, 0x7e3f57ff,
|
||||
<a name="l00211"></a>00211 0xea1debbb, 0x7e1d93ea, 0xe957ecfb, 0x7dfa98a8, 0xe8922622, 0x7dd6668f,
|
||||
<a name="l00212"></a>00212 0xe7cc9917, 0x7db0fdf8,
|
||||
<a name="l00213"></a>00213 0xe70747c4, 0x7d8a5f40, 0xe642340d, 0x7d628ac6, 0xe57d5fda, 0x7d3980ec,
|
||||
<a name="l00214"></a>00214 0xe4b8cd11, 0x7d0f4218,
|
||||
<a name="l00215"></a>00215 0xe3f47d96, 0x7ce3ceb2, 0xe330734d, 0x7cb72724, 0xe26cb01b, 0x7c894bde,
|
||||
<a name="l00216"></a>00216 0xe1a935e2, 0x7c5a3d50,
|
||||
<a name="l00217"></a>00217 0xe0e60685, 0x7c29fbee, 0xe02323e5, 0x7bf88830, 0xdf608fe4, 0x7bc5e290,
|
||||
<a name="l00218"></a>00218 0xde9e4c60, 0x7b920b89,
|
||||
<a name="l00219"></a>00219 0xdddc5b3b, 0x7b5d039e, 0xdd1abe51, 0x7b26cb4f, 0xdc597781, 0x7aef6323,
|
||||
<a name="l00220"></a>00220 0xdb9888a8, 0x7ab6cba4,
|
||||
<a name="l00221"></a>00221 0xdad7f3a2, 0x7a7d055b, 0xda17ba4a, 0x7a4210d8, 0xd957de7a, 0x7a05eead,
|
||||
<a name="l00222"></a>00222 0xd898620c, 0x79c89f6e,
|
||||
<a name="l00223"></a>00223 0xd7d946d8, 0x798a23b1, 0xd71a8eb5, 0x794a7c12, 0xd65c3b7b, 0x7909a92d,
|
||||
<a name="l00224"></a>00224 0xd59e4eff, 0x78c7aba2,
|
||||
<a name="l00225"></a>00225 0xd4e0cb15, 0x78848414, 0xd423b191, 0x78403329, 0xd3670446, 0x77fab989,
|
||||
<a name="l00226"></a>00226 0xd2aac504, 0x77b417df,
|
||||
<a name="l00227"></a>00227 0xd1eef59e, 0x776c4edb, 0xd13397e2, 0x77235f2d, 0xd078ad9e, 0x76d94989,
|
||||
<a name="l00228"></a>00228 0xcfbe389f, 0x768e0ea6,
|
||||
<a name="l00229"></a>00229 0xcf043ab3, 0x7641af3d, 0xce4ab5a2, 0x75f42c0b, 0xcd91ab39, 0x75a585cf,
|
||||
<a name="l00230"></a>00230 0xccd91d3d, 0x7555bd4c,
|
||||
<a name="l00231"></a>00231 0xcc210d79, 0x7504d345, 0xcb697db0, 0x74b2c884, 0xcab26fa9, 0x745f9dd1,
|
||||
<a name="l00232"></a>00232 0xc9fbe527, 0x740b53fb,
|
||||
<a name="l00233"></a>00233 0xc945dfec, 0x73b5ebd1, 0xc89061ba, 0x735f6626, 0xc7db6c50, 0x7307c3d0,
|
||||
<a name="l00234"></a>00234 0xc727016d, 0x72af05a7,
|
||||
<a name="l00235"></a>00235 0xc67322ce, 0x72552c85, 0xc5bfd22e, 0x71fa3949, 0xc50d1149, 0x719e2cd2,
|
||||
<a name="l00236"></a>00236 0xc45ae1d7, 0x71410805,
|
||||
<a name="l00237"></a>00237 0xc3a94590, 0x70e2cbc6, 0xc2f83e2a, 0x708378ff, 0xc247cd5a, 0x7023109a,
|
||||
<a name="l00238"></a>00238 0xc197f4d4, 0x6fc19385,
|
||||
<a name="l00239"></a>00239 0xc0e8b648, 0x6f5f02b2, 0xc03a1368, 0x6efb5f12, 0xbf8c0de3, 0x6e96a99d,
|
||||
<a name="l00240"></a>00240 0xbedea765, 0x6e30e34a,
|
||||
<a name="l00241"></a>00241 0xbe31e19b, 0x6dca0d14, 0xbd85be30, 0x6d6227fa, 0xbcda3ecb, 0x6cf934fc,
|
||||
<a name="l00242"></a>00242 0xbc2f6513, 0x6c8f351c,
|
||||
<a name="l00243"></a>00243 0xbb8532b0, 0x6c242960, 0xbadba943, 0x6bb812d1, 0xba32ca71, 0x6b4af279,
|
||||
<a name="l00244"></a>00244 0xb98a97d8, 0x6adcc964,
|
||||
<a name="l00245"></a>00245 0xb8e31319, 0x6a6d98a4, 0xb83c3dd1, 0x69fd614a, 0xb796199b, 0x698c246c,
|
||||
<a name="l00246"></a>00246 0xb6f0a812, 0x6919e320,
|
||||
<a name="l00247"></a>00247 0xb64beacd, 0x68a69e81, 0xb5a7e362, 0x683257ab, 0xb5049368, 0x67bd0fbd,
|
||||
<a name="l00248"></a>00248 0xb461fc70, 0x6746c7d8,
|
||||
<a name="l00249"></a>00249 0xb3c0200c, 0x66cf8120, 0xb31effcc, 0x66573cbb, 0xb27e9d3c, 0x65ddfbd3,
|
||||
<a name="l00250"></a>00250 0xb1def9e9, 0x6563bf92,
|
||||
<a name="l00251"></a>00251 0xb140175b, 0x64e88926, 0xb0a1f71d, 0x646c59bf, 0xb0049ab3, 0x63ef3290,
|
||||
<a name="l00252"></a>00252 0xaf6803a2, 0x637114cc,
|
||||
<a name="l00253"></a>00253 0xaecc336c, 0x62f201ac, 0xae312b92, 0x6271fa69, 0xad96ed92, 0x61f1003f,
|
||||
<a name="l00254"></a>00254 0xacfd7ae8, 0x616f146c,
|
||||
<a name="l00255"></a>00255 0xac64d510, 0x60ec3830, 0xabccfd83, 0x60686ccf, 0xab35f5b5, 0x5fe3b38d,
|
||||
<a name="l00256"></a>00256 0xaa9fbf1e, 0x5f5e0db3,
|
||||
<a name="l00257"></a>00257 0xaa0a5b2e, 0x5ed77c8a, 0xa975cb57, 0x5e50015d, 0xa8e21106, 0x5dc79d7c,
|
||||
<a name="l00258"></a>00258 0xa84f2daa, 0x5d3e5237,
|
||||
<a name="l00259"></a>00259 0xa7bd22ac, 0x5cb420e0, 0xa72bf174, 0x5c290acc, 0xa69b9b68, 0x5b9d1154,
|
||||
<a name="l00260"></a>00260 0xa60c21ee, 0x5b1035cf,
|
||||
<a name="l00261"></a>00261 0xa57d8666, 0x5a82799a, 0xa4efca31, 0x59f3de12, 0xa462eeac, 0x59646498,
|
||||
<a name="l00262"></a>00262 0xa3d6f534, 0x58d40e8c,
|
||||
<a name="l00263"></a>00263 0xa34bdf20, 0x5842dd54, 0xa2c1adc9, 0x57b0d256, 0xa2386284, 0x571deefa,
|
||||
<a name="l00264"></a>00264 0xa1affea3, 0x568a34a9,
|
||||
<a name="l00265"></a>00265 0xa1288376, 0x55f5a4d2, 0xa0a1f24d, 0x556040e2, 0xa01c4c73, 0x54ca0a4b,
|
||||
<a name="l00266"></a>00266 0x9f979331, 0x5433027d,
|
||||
<a name="l00267"></a>00267 0x9f13c7d0, 0x539b2af0, 0x9e90eb94, 0x53028518, 0x9e0effc1, 0x5269126e,
|
||||
<a name="l00268"></a>00268 0x9d8e0597, 0x51ced46e,
|
||||
<a name="l00269"></a>00269 0x9d0dfe54, 0x5133cc94, 0x9c8eeb34, 0x5097fc5e, 0x9c10cd70, 0x4ffb654d,
|
||||
<a name="l00270"></a>00270 0x9b93a641, 0x4f5e08e3,
|
||||
<a name="l00271"></a>00271 0x9b1776da, 0x4ebfe8a5, 0x9a9c406e, 0x4e210617, 0x9a22042d, 0x4d8162c4,
|
||||
<a name="l00272"></a>00272 0x99a8c345, 0x4ce10034,
|
||||
<a name="l00273"></a>00273 0x99307ee0, 0x4c3fdff4, 0x98b93828, 0x4b9e0390, 0x9842f043, 0x4afb6c98,
|
||||
<a name="l00274"></a>00274 0x97cda855, 0x4a581c9e,
|
||||
<a name="l00275"></a>00275 0x9759617f, 0x49b41533, 0x96e61ce0, 0x490f57ee, 0x9673db94, 0x4869e665,
|
||||
<a name="l00276"></a>00276 0x96029eb6, 0x47c3c22f,
|
||||
<a name="l00277"></a>00277 0x9592675c, 0x471cece7, 0x9523369c, 0x46756828, 0x94b50d87, 0x45cd358f,
|
||||
<a name="l00278"></a>00278 0x9447ed2f, 0x452456bd,
|
||||
<a name="l00279"></a>00279 0x93dbd6a0, 0x447acd50, 0x9370cae4, 0x43d09aed, 0x9306cb04, 0x4325c135,
|
||||
<a name="l00280"></a>00280 0x929dd806, 0x427a41d0,
|
||||
<a name="l00281"></a>00281 0x9235f2ec, 0x41ce1e65, 0x91cf1cb6, 0x4121589b, 0x91695663, 0x4073f21d,
|
||||
<a name="l00282"></a>00282 0x9104a0ee, 0x3fc5ec98,
|
||||
<a name="l00283"></a>00283 0x90a0fd4e, 0x3f1749b8, 0x903e6c7b, 0x3e680b2c, 0x8fdcef66, 0x3db832a6,
|
||||
<a name="l00284"></a>00284 0x8f7c8701, 0x3d07c1d6,
|
||||
<a name="l00285"></a>00285 0x8f1d343a, 0x3c56ba70, 0x8ebef7fb, 0x3ba51e29, 0x8e61d32e, 0x3af2eeb7,
|
||||
<a name="l00286"></a>00286 0x8e05c6b7, 0x3a402dd2,
|
||||
<a name="l00287"></a>00287 0x8daad37b, 0x398cdd32, 0x8d50fa59, 0x38d8fe93, 0x8cf83c30, 0x382493b0,
|
||||
<a name="l00288"></a>00288 0x8ca099da, 0x376f9e46,
|
||||
<a name="l00289"></a>00289 0x8c4a142f, 0x36ba2014, 0x8bf4ac05, 0x36041ad9, 0x8ba0622f, 0x354d9057,
|
||||
<a name="l00290"></a>00290 0x8b4d377c, 0x34968250,
|
||||
<a name="l00291"></a>00291 0x8afb2cbb, 0x33def287, 0x8aaa42b4, 0x3326e2c3, 0x8a5a7a31, 0x326e54c7,
|
||||
<a name="l00292"></a>00292 0x8a0bd3f5, 0x31b54a5e,
|
||||
<a name="l00293"></a>00293 0x89be50c3, 0x30fbc54d, 0x8971f15a, 0x3041c761, 0x8926b677, 0x2f875262,
|
||||
<a name="l00294"></a>00294 0x88dca0d3, 0x2ecc681e,
|
||||
<a name="l00295"></a>00295 0x8893b125, 0x2e110a62, 0x884be821, 0x2d553afc, 0x88054677, 0x2c98fbba,
|
||||
<a name="l00296"></a>00296 0x87bfccd7, 0x2bdc4e6f,
|
||||
<a name="l00297"></a>00297 0x877b7bec, 0x2b1f34eb, 0x8738545e, 0x2a61b101, 0x86f656d3, 0x29a3c485,
|
||||
<a name="l00298"></a>00298 0x86b583ee, 0x28e5714b,
|
||||
<a name="l00299"></a>00299 0x8675dc4f, 0x2826b928, 0x86376092, 0x27679df4, 0x85fa1153, 0x26a82186,
|
||||
<a name="l00300"></a>00300 0x85bdef28, 0x25e845b6,
|
||||
<a name="l00301"></a>00301 0x8582faa5, 0x25280c5e, 0x8549345c, 0x24677758, 0x85109cdd, 0x23a6887f,
|
||||
<a name="l00302"></a>00302 0x84d934b1, 0x22e541af,
|
||||
<a name="l00303"></a>00303 0x84a2fc62, 0x2223a4c5, 0x846df477, 0x2161b3a0, 0x843a1d70, 0x209f701c,
|
||||
<a name="l00304"></a>00304 0x840777d0, 0x1fdcdc1b,
|
||||
<a name="l00305"></a>00305 0x83d60412, 0x1f19f97b, 0x83a5c2b0, 0x1e56ca1e, 0x8376b422, 0x1d934fe5,
|
||||
<a name="l00306"></a>00306 0x8348d8dc, 0x1ccf8cb3,
|
||||
<a name="l00307"></a>00307 0x831c314e, 0x1c0b826a, 0x82f0bde8, 0x1b4732ef, 0x82c67f14, 0x1a82a026,
|
||||
<a name="l00308"></a>00308 0x829d753a, 0x19bdcbf3,
|
||||
<a name="l00309"></a>00309 0x8275a0c0, 0x18f8b83c, 0x824f0208, 0x183366e9, 0x82299971, 0x176dd9de,
|
||||
<a name="l00310"></a>00310 0x82056758, 0x16a81305,
|
||||
<a name="l00311"></a>00311 0x81e26c16, 0x15e21445, 0x81c0a801, 0x151bdf86, 0x81a01b6d, 0x145576b1,
|
||||
<a name="l00312"></a>00312 0x8180c6a9, 0x138edbb1,
|
||||
<a name="l00313"></a>00313 0x8162aa04, 0x12c8106f, 0x8145c5c7, 0x120116d5, 0x812a1a3a, 0x1139f0cf,
|
||||
<a name="l00314"></a>00314 0x810fa7a0, 0x1072a048,
|
||||
<a name="l00315"></a>00315 0x80f66e3c, 0xfab272b, 0x80de6e4c, 0xee38766, 0x80c7a80a, 0xe1bc2e4,
|
||||
<a name="l00316"></a>00316 0x80b21baf, 0xd53db92,
|
||||
<a name="l00317"></a>00317 0x809dc971, 0xc8bd35e, 0x808ab180, 0xbc3ac35, 0x8078d40d, 0xafb6805,
|
||||
<a name="l00318"></a>00318 0x80683143, 0xa3308bd,
|
||||
<a name="l00319"></a>00319 0x8058c94c, 0x96a9049, 0x804a9c4d, 0x8a2009a, 0x803daa6a, 0x7d95b9e,
|
||||
<a name="l00320"></a>00320 0x8031f3c2, 0x710a345,
|
||||
<a name="l00321"></a>00321 0x80277872, 0x647d97c, 0x801e3895, 0x57f0035, 0x80163440, 0x4b6195d,
|
||||
<a name="l00322"></a>00322 0x800f6b88, 0x3ed26e6,
|
||||
<a name="l00323"></a>00323 0x8009de7e, 0x3242abf, 0x80058d2f, 0x25b26d7, 0x800277a6, 0x1921d20,
|
||||
<a name="l00324"></a>00324 0x80009dea, 0xc90f88,
|
||||
<a name="l00325"></a>00325 0x80000000, 0x0, 0x80009dea, 0xff36f078, 0x800277a6, 0xfe6de2e0, 0x80058d2f,
|
||||
<a name="l00326"></a>00326 0xfda4d929,
|
||||
<a name="l00327"></a>00327 0x8009de7e, 0xfcdbd541, 0x800f6b88, 0xfc12d91a, 0x80163440, 0xfb49e6a3,
|
||||
<a name="l00328"></a>00328 0x801e3895, 0xfa80ffcb,
|
||||
<a name="l00329"></a>00329 0x80277872, 0xf9b82684, 0x8031f3c2, 0xf8ef5cbb, 0x803daa6a, 0xf826a462,
|
||||
<a name="l00330"></a>00330 0x804a9c4d, 0xf75dff66,
|
||||
<a name="l00331"></a>00331 0x8058c94c, 0xf6956fb7, 0x80683143, 0xf5ccf743, 0x8078d40d, 0xf50497fb,
|
||||
<a name="l00332"></a>00332 0x808ab180, 0xf43c53cb,
|
||||
<a name="l00333"></a>00333 0x809dc971, 0xf3742ca2, 0x80b21baf, 0xf2ac246e, 0x80c7a80a, 0xf1e43d1c,
|
||||
<a name="l00334"></a>00334 0x80de6e4c, 0xf11c789a,
|
||||
<a name="l00335"></a>00335 0x80f66e3c, 0xf054d8d5, 0x810fa7a0, 0xef8d5fb8, 0x812a1a3a, 0xeec60f31,
|
||||
<a name="l00336"></a>00336 0x8145c5c7, 0xedfee92b,
|
||||
<a name="l00337"></a>00337 0x8162aa04, 0xed37ef91, 0x8180c6a9, 0xec71244f, 0x81a01b6d, 0xebaa894f,
|
||||
<a name="l00338"></a>00338 0x81c0a801, 0xeae4207a,
|
||||
<a name="l00339"></a>00339 0x81e26c16, 0xea1debbb, 0x82056758, 0xe957ecfb, 0x82299971, 0xe8922622,
|
||||
<a name="l00340"></a>00340 0x824f0208, 0xe7cc9917,
|
||||
<a name="l00341"></a>00341 0x8275a0c0, 0xe70747c4, 0x829d753a, 0xe642340d, 0x82c67f14, 0xe57d5fda,
|
||||
<a name="l00342"></a>00342 0x82f0bde8, 0xe4b8cd11,
|
||||
<a name="l00343"></a>00343 0x831c314e, 0xe3f47d96, 0x8348d8dc, 0xe330734d, 0x8376b422, 0xe26cb01b,
|
||||
<a name="l00344"></a>00344 0x83a5c2b0, 0xe1a935e2,
|
||||
<a name="l00345"></a>00345 0x83d60412, 0xe0e60685, 0x840777d0, 0xe02323e5, 0x843a1d70, 0xdf608fe4,
|
||||
<a name="l00346"></a>00346 0x846df477, 0xde9e4c60,
|
||||
<a name="l00347"></a>00347 0x84a2fc62, 0xdddc5b3b, 0x84d934b1, 0xdd1abe51, 0x85109cdd, 0xdc597781,
|
||||
<a name="l00348"></a>00348 0x8549345c, 0xdb9888a8,
|
||||
<a name="l00349"></a>00349 0x8582faa5, 0xdad7f3a2, 0x85bdef28, 0xda17ba4a, 0x85fa1153, 0xd957de7a,
|
||||
<a name="l00350"></a>00350 0x86376092, 0xd898620c,
|
||||
<a name="l00351"></a>00351 0x8675dc4f, 0xd7d946d8, 0x86b583ee, 0xd71a8eb5, 0x86f656d3, 0xd65c3b7b,
|
||||
<a name="l00352"></a>00352 0x8738545e, 0xd59e4eff,
|
||||
<a name="l00353"></a>00353 0x877b7bec, 0xd4e0cb15, 0x87bfccd7, 0xd423b191, 0x88054677, 0xd3670446,
|
||||
<a name="l00354"></a>00354 0x884be821, 0xd2aac504,
|
||||
<a name="l00355"></a>00355 0x8893b125, 0xd1eef59e, 0x88dca0d3, 0xd13397e2, 0x8926b677, 0xd078ad9e,
|
||||
<a name="l00356"></a>00356 0x8971f15a, 0xcfbe389f,
|
||||
<a name="l00357"></a>00357 0x89be50c3, 0xcf043ab3, 0x8a0bd3f5, 0xce4ab5a2, 0x8a5a7a31, 0xcd91ab39,
|
||||
<a name="l00358"></a>00358 0x8aaa42b4, 0xccd91d3d,
|
||||
<a name="l00359"></a>00359 0x8afb2cbb, 0xcc210d79, 0x8b4d377c, 0xcb697db0, 0x8ba0622f, 0xcab26fa9,
|
||||
<a name="l00360"></a>00360 0x8bf4ac05, 0xc9fbe527,
|
||||
<a name="l00361"></a>00361 0x8c4a142f, 0xc945dfec, 0x8ca099da, 0xc89061ba, 0x8cf83c30, 0xc7db6c50,
|
||||
<a name="l00362"></a>00362 0x8d50fa59, 0xc727016d,
|
||||
<a name="l00363"></a>00363 0x8daad37b, 0xc67322ce, 0x8e05c6b7, 0xc5bfd22e, 0x8e61d32e, 0xc50d1149,
|
||||
<a name="l00364"></a>00364 0x8ebef7fb, 0xc45ae1d7,
|
||||
<a name="l00365"></a>00365 0x8f1d343a, 0xc3a94590, 0x8f7c8701, 0xc2f83e2a, 0x8fdcef66, 0xc247cd5a,
|
||||
<a name="l00366"></a>00366 0x903e6c7b, 0xc197f4d4,
|
||||
<a name="l00367"></a>00367 0x90a0fd4e, 0xc0e8b648, 0x9104a0ee, 0xc03a1368, 0x91695663, 0xbf8c0de3,
|
||||
<a name="l00368"></a>00368 0x91cf1cb6, 0xbedea765,
|
||||
<a name="l00369"></a>00369 0x9235f2ec, 0xbe31e19b, 0x929dd806, 0xbd85be30, 0x9306cb04, 0xbcda3ecb,
|
||||
<a name="l00370"></a>00370 0x9370cae4, 0xbc2f6513,
|
||||
<a name="l00371"></a>00371 0x93dbd6a0, 0xbb8532b0, 0x9447ed2f, 0xbadba943, 0x94b50d87, 0xba32ca71,
|
||||
<a name="l00372"></a>00372 0x9523369c, 0xb98a97d8,
|
||||
<a name="l00373"></a>00373 0x9592675c, 0xb8e31319, 0x96029eb6, 0xb83c3dd1, 0x9673db94, 0xb796199b,
|
||||
<a name="l00374"></a>00374 0x96e61ce0, 0xb6f0a812,
|
||||
<a name="l00375"></a>00375 0x9759617f, 0xb64beacd, 0x97cda855, 0xb5a7e362, 0x9842f043, 0xb5049368,
|
||||
<a name="l00376"></a>00376 0x98b93828, 0xb461fc70,
|
||||
<a name="l00377"></a>00377 0x99307ee0, 0xb3c0200c, 0x99a8c345, 0xb31effcc, 0x9a22042d, 0xb27e9d3c,
|
||||
<a name="l00378"></a>00378 0x9a9c406e, 0xb1def9e9,
|
||||
<a name="l00379"></a>00379 0x9b1776da, 0xb140175b, 0x9b93a641, 0xb0a1f71d, 0x9c10cd70, 0xb0049ab3,
|
||||
<a name="l00380"></a>00380 0x9c8eeb34, 0xaf6803a2,
|
||||
<a name="l00381"></a>00381 0x9d0dfe54, 0xaecc336c, 0x9d8e0597, 0xae312b92, 0x9e0effc1, 0xad96ed92,
|
||||
<a name="l00382"></a>00382 0x9e90eb94, 0xacfd7ae8,
|
||||
<a name="l00383"></a>00383 0x9f13c7d0, 0xac64d510, 0x9f979331, 0xabccfd83, 0xa01c4c73, 0xab35f5b5,
|
||||
<a name="l00384"></a>00384 0xa0a1f24d, 0xaa9fbf1e,
|
||||
<a name="l00385"></a>00385 0xa1288376, 0xaa0a5b2e, 0xa1affea3, 0xa975cb57, 0xa2386284, 0xa8e21106,
|
||||
<a name="l00386"></a>00386 0xa2c1adc9, 0xa84f2daa,
|
||||
<a name="l00387"></a>00387 0xa34bdf20, 0xa7bd22ac, 0xa3d6f534, 0xa72bf174, 0xa462eeac, 0xa69b9b68,
|
||||
<a name="l00388"></a>00388 0xa4efca31, 0xa60c21ee,
|
||||
<a name="l00389"></a>00389 0xa57d8666, 0xa57d8666, 0xa60c21ee, 0xa4efca31, 0xa69b9b68, 0xa462eeac,
|
||||
<a name="l00390"></a>00390 0xa72bf174, 0xa3d6f534,
|
||||
<a name="l00391"></a>00391 0xa7bd22ac, 0xa34bdf20, 0xa84f2daa, 0xa2c1adc9, 0xa8e21106, 0xa2386284,
|
||||
<a name="l00392"></a>00392 0xa975cb57, 0xa1affea3,
|
||||
<a name="l00393"></a>00393 0xaa0a5b2e, 0xa1288376, 0xaa9fbf1e, 0xa0a1f24d, 0xab35f5b5, 0xa01c4c73,
|
||||
<a name="l00394"></a>00394 0xabccfd83, 0x9f979331,
|
||||
<a name="l00395"></a>00395 0xac64d510, 0x9f13c7d0, 0xacfd7ae8, 0x9e90eb94, 0xad96ed92, 0x9e0effc1,
|
||||
<a name="l00396"></a>00396 0xae312b92, 0x9d8e0597,
|
||||
<a name="l00397"></a>00397 0xaecc336c, 0x9d0dfe54, 0xaf6803a2, 0x9c8eeb34, 0xb0049ab3, 0x9c10cd70,
|
||||
<a name="l00398"></a>00398 0xb0a1f71d, 0x9b93a641,
|
||||
<a name="l00399"></a>00399 0xb140175b, 0x9b1776da, 0xb1def9e9, 0x9a9c406e, 0xb27e9d3c, 0x9a22042d,
|
||||
<a name="l00400"></a>00400 0xb31effcc, 0x99a8c345,
|
||||
<a name="l00401"></a>00401 0xb3c0200c, 0x99307ee0, 0xb461fc70, 0x98b93828, 0xb5049368, 0x9842f043,
|
||||
<a name="l00402"></a>00402 0xb5a7e362, 0x97cda855,
|
||||
<a name="l00403"></a>00403 0xb64beacd, 0x9759617f, 0xb6f0a812, 0x96e61ce0, 0xb796199b, 0x9673db94,
|
||||
<a name="l00404"></a>00404 0xb83c3dd1, 0x96029eb6,
|
||||
<a name="l00405"></a>00405 0xb8e31319, 0x9592675c, 0xb98a97d8, 0x9523369c, 0xba32ca71, 0x94b50d87,
|
||||
<a name="l00406"></a>00406 0xbadba943, 0x9447ed2f,
|
||||
<a name="l00407"></a>00407 0xbb8532b0, 0x93dbd6a0, 0xbc2f6513, 0x9370cae4, 0xbcda3ecb, 0x9306cb04,
|
||||
<a name="l00408"></a>00408 0xbd85be30, 0x929dd806,
|
||||
<a name="l00409"></a>00409 0xbe31e19b, 0x9235f2ec, 0xbedea765, 0x91cf1cb6, 0xbf8c0de3, 0x91695663,
|
||||
<a name="l00410"></a>00410 0xc03a1368, 0x9104a0ee,
|
||||
<a name="l00411"></a>00411 0xc0e8b648, 0x90a0fd4e, 0xc197f4d4, 0x903e6c7b, 0xc247cd5a, 0x8fdcef66,
|
||||
<a name="l00412"></a>00412 0xc2f83e2a, 0x8f7c8701,
|
||||
<a name="l00413"></a>00413 0xc3a94590, 0x8f1d343a, 0xc45ae1d7, 0x8ebef7fb, 0xc50d1149, 0x8e61d32e,
|
||||
<a name="l00414"></a>00414 0xc5bfd22e, 0x8e05c6b7,
|
||||
<a name="l00415"></a>00415 0xc67322ce, 0x8daad37b, 0xc727016d, 0x8d50fa59, 0xc7db6c50, 0x8cf83c30,
|
||||
<a name="l00416"></a>00416 0xc89061ba, 0x8ca099da,
|
||||
<a name="l00417"></a>00417 0xc945dfec, 0x8c4a142f, 0xc9fbe527, 0x8bf4ac05, 0xcab26fa9, 0x8ba0622f,
|
||||
<a name="l00418"></a>00418 0xcb697db0, 0x8b4d377c,
|
||||
<a name="l00419"></a>00419 0xcc210d79, 0x8afb2cbb, 0xccd91d3d, 0x8aaa42b4, 0xcd91ab39, 0x8a5a7a31,
|
||||
<a name="l00420"></a>00420 0xce4ab5a2, 0x8a0bd3f5,
|
||||
<a name="l00421"></a>00421 0xcf043ab3, 0x89be50c3, 0xcfbe389f, 0x8971f15a, 0xd078ad9e, 0x8926b677,
|
||||
<a name="l00422"></a>00422 0xd13397e2, 0x88dca0d3,
|
||||
<a name="l00423"></a>00423 0xd1eef59e, 0x8893b125, 0xd2aac504, 0x884be821, 0xd3670446, 0x88054677,
|
||||
<a name="l00424"></a>00424 0xd423b191, 0x87bfccd7,
|
||||
<a name="l00425"></a>00425 0xd4e0cb15, 0x877b7bec, 0xd59e4eff, 0x8738545e, 0xd65c3b7b, 0x86f656d3,
|
||||
<a name="l00426"></a>00426 0xd71a8eb5, 0x86b583ee,
|
||||
<a name="l00427"></a>00427 0xd7d946d8, 0x8675dc4f, 0xd898620c, 0x86376092, 0xd957de7a, 0x85fa1153,
|
||||
<a name="l00428"></a>00428 0xda17ba4a, 0x85bdef28,
|
||||
<a name="l00429"></a>00429 0xdad7f3a2, 0x8582faa5, 0xdb9888a8, 0x8549345c, 0xdc597781, 0x85109cdd,
|
||||
<a name="l00430"></a>00430 0xdd1abe51, 0x84d934b1,
|
||||
<a name="l00431"></a>00431 0xdddc5b3b, 0x84a2fc62, 0xde9e4c60, 0x846df477, 0xdf608fe4, 0x843a1d70,
|
||||
<a name="l00432"></a>00432 0xe02323e5, 0x840777d0,
|
||||
<a name="l00433"></a>00433 0xe0e60685, 0x83d60412, 0xe1a935e2, 0x83a5c2b0, 0xe26cb01b, 0x8376b422,
|
||||
<a name="l00434"></a>00434 0xe330734d, 0x8348d8dc,
|
||||
<a name="l00435"></a>00435 0xe3f47d96, 0x831c314e, 0xe4b8cd11, 0x82f0bde8, 0xe57d5fda, 0x82c67f14,
|
||||
<a name="l00436"></a>00436 0xe642340d, 0x829d753a,
|
||||
<a name="l00437"></a>00437 0xe70747c4, 0x8275a0c0, 0xe7cc9917, 0x824f0208, 0xe8922622, 0x82299971,
|
||||
<a name="l00438"></a>00438 0xe957ecfb, 0x82056758,
|
||||
<a name="l00439"></a>00439 0xea1debbb, 0x81e26c16, 0xeae4207a, 0x81c0a801, 0xebaa894f, 0x81a01b6d,
|
||||
<a name="l00440"></a>00440 0xec71244f, 0x8180c6a9,
|
||||
<a name="l00441"></a>00441 0xed37ef91, 0x8162aa04, 0xedfee92b, 0x8145c5c7, 0xeec60f31, 0x812a1a3a,
|
||||
<a name="l00442"></a>00442 0xef8d5fb8, 0x810fa7a0,
|
||||
<a name="l00443"></a>00443 0xf054d8d5, 0x80f66e3c, 0xf11c789a, 0x80de6e4c, 0xf1e43d1c, 0x80c7a80a,
|
||||
<a name="l00444"></a>00444 0xf2ac246e, 0x80b21baf,
|
||||
<a name="l00445"></a>00445 0xf3742ca2, 0x809dc971, 0xf43c53cb, 0x808ab180, 0xf50497fb, 0x8078d40d,
|
||||
<a name="l00446"></a>00446 0xf5ccf743, 0x80683143,
|
||||
<a name="l00447"></a>00447 0xf6956fb7, 0x8058c94c, 0xf75dff66, 0x804a9c4d, 0xf826a462, 0x803daa6a,
|
||||
<a name="l00448"></a>00448 0xf8ef5cbb, 0x8031f3c2,
|
||||
<a name="l00449"></a>00449 0xf9b82684, 0x80277872, 0xfa80ffcb, 0x801e3895, 0xfb49e6a3, 0x80163440,
|
||||
<a name="l00450"></a>00450 0xfc12d91a, 0x800f6b88,
|
||||
<a name="l00451"></a>00451 0xfcdbd541, 0x8009de7e, 0xfda4d929, 0x80058d2f, 0xfe6de2e0, 0x800277a6,
|
||||
<a name="l00452"></a>00452 0xff36f078, 0x80009dea,
|
||||
<a name="l00453"></a>00453 0x0, 0x80000000, 0xc90f88, 0x80009dea, 0x1921d20, 0x800277a6, 0x25b26d7,
|
||||
<a name="l00454"></a>00454 0x80058d2f,
|
||||
<a name="l00455"></a>00455 0x3242abf, 0x8009de7e, 0x3ed26e6, 0x800f6b88, 0x4b6195d, 0x80163440,
|
||||
<a name="l00456"></a>00456 0x57f0035, 0x801e3895,
|
||||
<a name="l00457"></a>00457 0x647d97c, 0x80277872, 0x710a345, 0x8031f3c2, 0x7d95b9e, 0x803daa6a,
|
||||
<a name="l00458"></a>00458 0x8a2009a, 0x804a9c4d,
|
||||
<a name="l00459"></a>00459 0x96a9049, 0x8058c94c, 0xa3308bd, 0x80683143, 0xafb6805, 0x8078d40d,
|
||||
<a name="l00460"></a>00460 0xbc3ac35, 0x808ab180,
|
||||
<a name="l00461"></a>00461 0xc8bd35e, 0x809dc971, 0xd53db92, 0x80b21baf, 0xe1bc2e4, 0x80c7a80a,
|
||||
<a name="l00462"></a>00462 0xee38766, 0x80de6e4c,
|
||||
<a name="l00463"></a>00463 0xfab272b, 0x80f66e3c, 0x1072a048, 0x810fa7a0, 0x1139f0cf, 0x812a1a3a,
|
||||
<a name="l00464"></a>00464 0x120116d5, 0x8145c5c7,
|
||||
<a name="l00465"></a>00465 0x12c8106f, 0x8162aa04, 0x138edbb1, 0x8180c6a9, 0x145576b1, 0x81a01b6d,
|
||||
<a name="l00466"></a>00466 0x151bdf86, 0x81c0a801,
|
||||
<a name="l00467"></a>00467 0x15e21445, 0x81e26c16, 0x16a81305, 0x82056758, 0x176dd9de, 0x82299971,
|
||||
<a name="l00468"></a>00468 0x183366e9, 0x824f0208,
|
||||
<a name="l00469"></a>00469 0x18f8b83c, 0x8275a0c0, 0x19bdcbf3, 0x829d753a, 0x1a82a026, 0x82c67f14,
|
||||
<a name="l00470"></a>00470 0x1b4732ef, 0x82f0bde8,
|
||||
<a name="l00471"></a>00471 0x1c0b826a, 0x831c314e, 0x1ccf8cb3, 0x8348d8dc, 0x1d934fe5, 0x8376b422,
|
||||
<a name="l00472"></a>00472 0x1e56ca1e, 0x83a5c2b0,
|
||||
<a name="l00473"></a>00473 0x1f19f97b, 0x83d60412, 0x1fdcdc1b, 0x840777d0, 0x209f701c, 0x843a1d70,
|
||||
<a name="l00474"></a>00474 0x2161b3a0, 0x846df477,
|
||||
<a name="l00475"></a>00475 0x2223a4c5, 0x84a2fc62, 0x22e541af, 0x84d934b1, 0x23a6887f, 0x85109cdd,
|
||||
<a name="l00476"></a>00476 0x24677758, 0x8549345c,
|
||||
<a name="l00477"></a>00477 0x25280c5e, 0x8582faa5, 0x25e845b6, 0x85bdef28, 0x26a82186, 0x85fa1153,
|
||||
<a name="l00478"></a>00478 0x27679df4, 0x86376092,
|
||||
<a name="l00479"></a>00479 0x2826b928, 0x8675dc4f, 0x28e5714b, 0x86b583ee, 0x29a3c485, 0x86f656d3,
|
||||
<a name="l00480"></a>00480 0x2a61b101, 0x8738545e,
|
||||
<a name="l00481"></a>00481 0x2b1f34eb, 0x877b7bec, 0x2bdc4e6f, 0x87bfccd7, 0x2c98fbba, 0x88054677,
|
||||
<a name="l00482"></a>00482 0x2d553afc, 0x884be821,
|
||||
<a name="l00483"></a>00483 0x2e110a62, 0x8893b125, 0x2ecc681e, 0x88dca0d3, 0x2f875262, 0x8926b677,
|
||||
<a name="l00484"></a>00484 0x3041c761, 0x8971f15a,
|
||||
<a name="l00485"></a>00485 0x30fbc54d, 0x89be50c3, 0x31b54a5e, 0x8a0bd3f5, 0x326e54c7, 0x8a5a7a31,
|
||||
<a name="l00486"></a>00486 0x3326e2c3, 0x8aaa42b4,
|
||||
<a name="l00487"></a>00487 0x33def287, 0x8afb2cbb, 0x34968250, 0x8b4d377c, 0x354d9057, 0x8ba0622f,
|
||||
<a name="l00488"></a>00488 0x36041ad9, 0x8bf4ac05,
|
||||
<a name="l00489"></a>00489 0x36ba2014, 0x8c4a142f, 0x376f9e46, 0x8ca099da, 0x382493b0, 0x8cf83c30,
|
||||
<a name="l00490"></a>00490 0x38d8fe93, 0x8d50fa59,
|
||||
<a name="l00491"></a>00491 0x398cdd32, 0x8daad37b, 0x3a402dd2, 0x8e05c6b7, 0x3af2eeb7, 0x8e61d32e,
|
||||
<a name="l00492"></a>00492 0x3ba51e29, 0x8ebef7fb,
|
||||
<a name="l00493"></a>00493 0x3c56ba70, 0x8f1d343a, 0x3d07c1d6, 0x8f7c8701, 0x3db832a6, 0x8fdcef66,
|
||||
<a name="l00494"></a>00494 0x3e680b2c, 0x903e6c7b,
|
||||
<a name="l00495"></a>00495 0x3f1749b8, 0x90a0fd4e, 0x3fc5ec98, 0x9104a0ee, 0x4073f21d, 0x91695663,
|
||||
<a name="l00496"></a>00496 0x4121589b, 0x91cf1cb6,
|
||||
<a name="l00497"></a>00497 0x41ce1e65, 0x9235f2ec, 0x427a41d0, 0x929dd806, 0x4325c135, 0x9306cb04,
|
||||
<a name="l00498"></a>00498 0x43d09aed, 0x9370cae4,
|
||||
<a name="l00499"></a>00499 0x447acd50, 0x93dbd6a0, 0x452456bd, 0x9447ed2f, 0x45cd358f, 0x94b50d87,
|
||||
<a name="l00500"></a>00500 0x46756828, 0x9523369c,
|
||||
<a name="l00501"></a>00501 0x471cece7, 0x9592675c, 0x47c3c22f, 0x96029eb6, 0x4869e665, 0x9673db94,
|
||||
<a name="l00502"></a>00502 0x490f57ee, 0x96e61ce0,
|
||||
<a name="l00503"></a>00503 0x49b41533, 0x9759617f, 0x4a581c9e, 0x97cda855, 0x4afb6c98, 0x9842f043,
|
||||
<a name="l00504"></a>00504 0x4b9e0390, 0x98b93828,
|
||||
<a name="l00505"></a>00505 0x4c3fdff4, 0x99307ee0, 0x4ce10034, 0x99a8c345, 0x4d8162c4, 0x9a22042d,
|
||||
<a name="l00506"></a>00506 0x4e210617, 0x9a9c406e,
|
||||
<a name="l00507"></a>00507 0x4ebfe8a5, 0x9b1776da, 0x4f5e08e3, 0x9b93a641, 0x4ffb654d, 0x9c10cd70,
|
||||
<a name="l00508"></a>00508 0x5097fc5e, 0x9c8eeb34,
|
||||
<a name="l00509"></a>00509 0x5133cc94, 0x9d0dfe54, 0x51ced46e, 0x9d8e0597, 0x5269126e, 0x9e0effc1,
|
||||
<a name="l00510"></a>00510 0x53028518, 0x9e90eb94,
|
||||
<a name="l00511"></a>00511 0x539b2af0, 0x9f13c7d0, 0x5433027d, 0x9f979331, 0x54ca0a4b, 0xa01c4c73,
|
||||
<a name="l00512"></a>00512 0x556040e2, 0xa0a1f24d,
|
||||
<a name="l00513"></a>00513 0x55f5a4d2, 0xa1288376, 0x568a34a9, 0xa1affea3, 0x571deefa, 0xa2386284,
|
||||
<a name="l00514"></a>00514 0x57b0d256, 0xa2c1adc9,
|
||||
<a name="l00515"></a>00515 0x5842dd54, 0xa34bdf20, 0x58d40e8c, 0xa3d6f534, 0x59646498, 0xa462eeac,
|
||||
<a name="l00516"></a>00516 0x59f3de12, 0xa4efca31,
|
||||
<a name="l00517"></a>00517 0x5a82799a, 0xa57d8666, 0x5b1035cf, 0xa60c21ee, 0x5b9d1154, 0xa69b9b68,
|
||||
<a name="l00518"></a>00518 0x5c290acc, 0xa72bf174,
|
||||
<a name="l00519"></a>00519 0x5cb420e0, 0xa7bd22ac, 0x5d3e5237, 0xa84f2daa, 0x5dc79d7c, 0xa8e21106,
|
||||
<a name="l00520"></a>00520 0x5e50015d, 0xa975cb57,
|
||||
<a name="l00521"></a>00521 0x5ed77c8a, 0xaa0a5b2e, 0x5f5e0db3, 0xaa9fbf1e, 0x5fe3b38d, 0xab35f5b5,
|
||||
<a name="l00522"></a>00522 0x60686ccf, 0xabccfd83,
|
||||
<a name="l00523"></a>00523 0x60ec3830, 0xac64d510, 0x616f146c, 0xacfd7ae8, 0x61f1003f, 0xad96ed92,
|
||||
<a name="l00524"></a>00524 0x6271fa69, 0xae312b92,
|
||||
<a name="l00525"></a>00525 0x62f201ac, 0xaecc336c, 0x637114cc, 0xaf6803a2, 0x63ef3290, 0xb0049ab3,
|
||||
<a name="l00526"></a>00526 0x646c59bf, 0xb0a1f71d,
|
||||
<a name="l00527"></a>00527 0x64e88926, 0xb140175b, 0x6563bf92, 0xb1def9e9, 0x65ddfbd3, 0xb27e9d3c,
|
||||
<a name="l00528"></a>00528 0x66573cbb, 0xb31effcc,
|
||||
<a name="l00529"></a>00529 0x66cf8120, 0xb3c0200c, 0x6746c7d8, 0xb461fc70, 0x67bd0fbd, 0xb5049368,
|
||||
<a name="l00530"></a>00530 0x683257ab, 0xb5a7e362,
|
||||
<a name="l00531"></a>00531 0x68a69e81, 0xb64beacd, 0x6919e320, 0xb6f0a812, 0x698c246c, 0xb796199b,
|
||||
<a name="l00532"></a>00532 0x69fd614a, 0xb83c3dd1,
|
||||
<a name="l00533"></a>00533 0x6a6d98a4, 0xb8e31319, 0x6adcc964, 0xb98a97d8, 0x6b4af279, 0xba32ca71,
|
||||
<a name="l00534"></a>00534 0x6bb812d1, 0xbadba943,
|
||||
<a name="l00535"></a>00535 0x6c242960, 0xbb8532b0, 0x6c8f351c, 0xbc2f6513, 0x6cf934fc, 0xbcda3ecb,
|
||||
<a name="l00536"></a>00536 0x6d6227fa, 0xbd85be30,
|
||||
<a name="l00537"></a>00537 0x6dca0d14, 0xbe31e19b, 0x6e30e34a, 0xbedea765, 0x6e96a99d, 0xbf8c0de3,
|
||||
<a name="l00538"></a>00538 0x6efb5f12, 0xc03a1368,
|
||||
<a name="l00539"></a>00539 0x6f5f02b2, 0xc0e8b648, 0x6fc19385, 0xc197f4d4, 0x7023109a, 0xc247cd5a,
|
||||
<a name="l00540"></a>00540 0x708378ff, 0xc2f83e2a,
|
||||
<a name="l00541"></a>00541 0x70e2cbc6, 0xc3a94590, 0x71410805, 0xc45ae1d7, 0x719e2cd2, 0xc50d1149,
|
||||
<a name="l00542"></a>00542 0x71fa3949, 0xc5bfd22e,
|
||||
<a name="l00543"></a>00543 0x72552c85, 0xc67322ce, 0x72af05a7, 0xc727016d, 0x7307c3d0, 0xc7db6c50,
|
||||
<a name="l00544"></a>00544 0x735f6626, 0xc89061ba,
|
||||
<a name="l00545"></a>00545 0x73b5ebd1, 0xc945dfec, 0x740b53fb, 0xc9fbe527, 0x745f9dd1, 0xcab26fa9,
|
||||
<a name="l00546"></a>00546 0x74b2c884, 0xcb697db0,
|
||||
<a name="l00547"></a>00547 0x7504d345, 0xcc210d79, 0x7555bd4c, 0xccd91d3d, 0x75a585cf, 0xcd91ab39,
|
||||
<a name="l00548"></a>00548 0x75f42c0b, 0xce4ab5a2,
|
||||
<a name="l00549"></a>00549 0x7641af3d, 0xcf043ab3, 0x768e0ea6, 0xcfbe389f, 0x76d94989, 0xd078ad9e,
|
||||
<a name="l00550"></a>00550 0x77235f2d, 0xd13397e2,
|
||||
<a name="l00551"></a>00551 0x776c4edb, 0xd1eef59e, 0x77b417df, 0xd2aac504, 0x77fab989, 0xd3670446,
|
||||
<a name="l00552"></a>00552 0x78403329, 0xd423b191,
|
||||
<a name="l00553"></a>00553 0x78848414, 0xd4e0cb15, 0x78c7aba2, 0xd59e4eff, 0x7909a92d, 0xd65c3b7b,
|
||||
<a name="l00554"></a>00554 0x794a7c12, 0xd71a8eb5,
|
||||
<a name="l00555"></a>00555 0x798a23b1, 0xd7d946d8, 0x79c89f6e, 0xd898620c, 0x7a05eead, 0xd957de7a,
|
||||
<a name="l00556"></a>00556 0x7a4210d8, 0xda17ba4a,
|
||||
<a name="l00557"></a>00557 0x7a7d055b, 0xdad7f3a2, 0x7ab6cba4, 0xdb9888a8, 0x7aef6323, 0xdc597781,
|
||||
<a name="l00558"></a>00558 0x7b26cb4f, 0xdd1abe51,
|
||||
<a name="l00559"></a>00559 0x7b5d039e, 0xdddc5b3b, 0x7b920b89, 0xde9e4c60, 0x7bc5e290, 0xdf608fe4,
|
||||
<a name="l00560"></a>00560 0x7bf88830, 0xe02323e5,
|
||||
<a name="l00561"></a>00561 0x7c29fbee, 0xe0e60685, 0x7c5a3d50, 0xe1a935e2, 0x7c894bde, 0xe26cb01b,
|
||||
<a name="l00562"></a>00562 0x7cb72724, 0xe330734d,
|
||||
<a name="l00563"></a>00563 0x7ce3ceb2, 0xe3f47d96, 0x7d0f4218, 0xe4b8cd11, 0x7d3980ec, 0xe57d5fda,
|
||||
<a name="l00564"></a>00564 0x7d628ac6, 0xe642340d,
|
||||
<a name="l00565"></a>00565 0x7d8a5f40, 0xe70747c4, 0x7db0fdf8, 0xe7cc9917, 0x7dd6668f, 0xe8922622,
|
||||
<a name="l00566"></a>00566 0x7dfa98a8, 0xe957ecfb,
|
||||
<a name="l00567"></a>00567 0x7e1d93ea, 0xea1debbb, 0x7e3f57ff, 0xeae4207a, 0x7e5fe493, 0xebaa894f,
|
||||
<a name="l00568"></a>00568 0x7e7f3957, 0xec71244f,
|
||||
<a name="l00569"></a>00569 0x7e9d55fc, 0xed37ef91, 0x7eba3a39, 0xedfee92b, 0x7ed5e5c6, 0xeec60f31,
|
||||
<a name="l00570"></a>00570 0x7ef05860, 0xef8d5fb8,
|
||||
<a name="l00571"></a>00571 0x7f0991c4, 0xf054d8d5, 0x7f2191b4, 0xf11c789a, 0x7f3857f6, 0xf1e43d1c,
|
||||
<a name="l00572"></a>00572 0x7f4de451, 0xf2ac246e,
|
||||
<a name="l00573"></a>00573 0x7f62368f, 0xf3742ca2, 0x7f754e80, 0xf43c53cb, 0x7f872bf3, 0xf50497fb,
|
||||
<a name="l00574"></a>00574 0x7f97cebd, 0xf5ccf743,
|
||||
<a name="l00575"></a>00575 0x7fa736b4, 0xf6956fb7, 0x7fb563b3, 0xf75dff66, 0x7fc25596, 0xf826a462,
|
||||
<a name="l00576"></a>00576 0x7fce0c3e, 0xf8ef5cbb,
|
||||
<a name="l00577"></a>00577 0x7fd8878e, 0xf9b82684, 0x7fe1c76b, 0xfa80ffcb, 0x7fe9cbc0, 0xfb49e6a3,
|
||||
<a name="l00578"></a>00578 0x7ff09478, 0xfc12d91a,
|
||||
<a name="l00579"></a>00579 0x7ff62182, 0xfcdbd541, 0x7ffa72d1, 0xfda4d929, 0x7ffd885a, 0xfe6de2e0,
|
||||
<a name="l00580"></a>00580 0x7fff6216, 0xff36f078
|
||||
<a name="l00581"></a>00581 };
|
||||
<a name="l00582"></a>00582
|
||||
<a name="l00605"></a><a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c">00605</a> <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c" title="Initialization function for the Q31 CFFT/CIFFT.">arm_cfft_radix4_init_q31</a>(
|
||||
<a name="l00606"></a>00606 <a class="code" href="structarm__cfft__radix4__instance__q31.html" title="Instance structure for the Q31 CFFT/CIFFT function.">arm_cfft_radix4_instance_q31</a> * S,
|
||||
<a name="l00607"></a>00607 uint16_t fftLen,
|
||||
<a name="l00608"></a>00608 uint8_t <a class="code" href="arm__fft__bin__example__f32_8c.html#a379ccb99013d369a41b49619083c16ef">ifftFlag</a>,
|
||||
<a name="l00609"></a>00609 uint8_t bitReverseFlag)
|
||||
<a name="l00610"></a>00610 {
|
||||
<a name="l00611"></a>00611 <span class="comment">/* Initialise the default arm status */</span>
|
||||
<a name="l00612"></a>00612 <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> status = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>;
|
||||
<a name="l00613"></a>00613 <span class="comment">/* Initialise the FFT length */</span>
|
||||
<a name="l00614"></a>00614 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#ab413d2a5d3f45fa187d93813bf3bf81b">fftLen</a> = fftLen;
|
||||
<a name="l00615"></a>00615 <span class="comment">/* Initialise the Twiddle coefficient pointer */</span>
|
||||
<a name="l00616"></a>00616 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a561c22dee4cbdcfa0fd5f15106ecc306">pTwiddle</a> = (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> *) <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaff0656425a80136572711cefae9800f">twiddleCoefQ31</a>;
|
||||
<a name="l00617"></a>00617 <span class="comment">/* Initialise the Flag for selection of CFFT or CIFFT */</span>
|
||||
<a name="l00618"></a>00618 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#adc0a62ba669ad2282ecbe43d5d96abab">ifftFlag</a> = <a class="code" href="arm__fft__bin__example__f32_8c.html#a379ccb99013d369a41b49619083c16ef">ifftFlag</a>;
|
||||
<a name="l00619"></a>00619 <span class="comment">/* Initialise the Flag for calculation Bit reversal or not */</span>
|
||||
<a name="l00620"></a>00620 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a5a7c4f4c7b3fb655cbb2bc11ef160a2a">bitReverseFlag</a> = bitReverseFlag;
|
||||
<a name="l00621"></a>00621
|
||||
<a name="l00622"></a>00622 <span class="comment">/* Initializations of Instance structure depending on the FFT length */</span>
|
||||
<a name="l00623"></a>00623 <span class="keywordflow">switch</span> (S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#ab413d2a5d3f45fa187d93813bf3bf81b">fftLen</a>)
|
||||
<a name="l00624"></a>00624 {
|
||||
<a name="l00625"></a>00625 <span class="comment">/* Initializations of structure parameters for 1024 point FFT */</span>
|
||||
<a name="l00626"></a>00626 <span class="keywordflow">case</span> 1024u:
|
||||
<a name="l00627"></a>00627 <span class="comment">/* Initialise the twiddle coef modifier value */</span>
|
||||
<a name="l00628"></a>00628 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a8cf8187b8232815cf17ee82bf572ecf9">twidCoefModifier</a> = 1u;
|
||||
<a name="l00629"></a>00629 <span class="comment">/* Initialise the bit reversal table modifier */</span>
|
||||
<a name="l00630"></a>00630 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a94d2fead4efa4d5eaae142bbe30b0e15">bitRevFactor</a> = 1u;
|
||||
<a name="l00631"></a>00631 <span class="comment">/* Initialise the bit reversal table pointer */</span>
|
||||
<a name="l00632"></a>00632 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a33a3bc774c97373261699463c05dfe54">pBitRevTable</a> = <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>;
|
||||
<a name="l00633"></a>00633 <span class="keywordflow">break</span>;
|
||||
<a name="l00634"></a>00634
|
||||
<a name="l00635"></a>00635 <span class="keywordflow">case</span> 256u:
|
||||
<a name="l00636"></a>00636 <span class="comment">/* Initializations of structure parameters for 256 point FFT */</span>
|
||||
<a name="l00637"></a>00637 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a8cf8187b8232815cf17ee82bf572ecf9">twidCoefModifier</a> = 4u;
|
||||
<a name="l00638"></a>00638 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a94d2fead4efa4d5eaae142bbe30b0e15">bitRevFactor</a> = 4u;
|
||||
<a name="l00639"></a>00639 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a33a3bc774c97373261699463c05dfe54">pBitRevTable</a> = (uint16_t *) & <a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>[3];
|
||||
<a name="l00640"></a>00640 <span class="keywordflow">break</span>;
|
||||
<a name="l00641"></a>00641
|
||||
<a name="l00642"></a>00642 <span class="keywordflow">case</span> 64u:
|
||||
<a name="l00643"></a>00643 <span class="comment">/* Initializations of structure parameters for 64 point FFT */</span>
|
||||
<a name="l00644"></a>00644 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a8cf8187b8232815cf17ee82bf572ecf9">twidCoefModifier</a> = 16u;
|
||||
<a name="l00645"></a>00645 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a94d2fead4efa4d5eaae142bbe30b0e15">bitRevFactor</a> = 16u;
|
||||
<a name="l00646"></a>00646 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a33a3bc774c97373261699463c05dfe54">pBitRevTable</a> = &<a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>[15];
|
||||
<a name="l00647"></a>00647 <span class="keywordflow">break</span>;
|
||||
<a name="l00648"></a>00648
|
||||
<a name="l00649"></a>00649 <span class="keywordflow">case</span> 16u:
|
||||
<a name="l00650"></a>00650 <span class="comment">/* Initializations of structure parameters for 16 point FFT */</span>
|
||||
<a name="l00651"></a>00651 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a8cf8187b8232815cf17ee82bf572ecf9">twidCoefModifier</a> = 64u;
|
||||
<a name="l00652"></a>00652 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a94d2fead4efa4d5eaae142bbe30b0e15">bitRevFactor</a> = 64u;
|
||||
<a name="l00653"></a>00653 S-><a class="code" href="structarm__cfft__radix4__instance__q31.html#a33a3bc774c97373261699463c05dfe54">pBitRevTable</a> = &<a class="code" href="group___c_f_f_t___c_i_f_f_t.html#gaaa17ffb170c2ca8a37d5c62c09e334ba">armBitRevTable</a>[63];
|
||||
<a name="l00654"></a>00654 <span class="keywordflow">break</span>;
|
||||
<a name="l00655"></a>00655
|
||||
<a name="l00656"></a>00656 <span class="keywordflow">default</span>:
|
||||
<a name="l00657"></a>00657 <span class="comment">/* Reporting argument error if fftSize is not valid value */</span>
|
||||
<a name="l00658"></a>00658 status = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a74897e18d4b8f62b12a7d8a01dd2bb35">ARM_MATH_ARGUMENT_ERROR</a>;
|
||||
<a name="l00659"></a>00659 <span class="keywordflow">break</span>;
|
||||
<a name="l00660"></a>00660 }
|
||||
<a name="l00661"></a>00661
|
||||
<a name="l00662"></a>00662 <span class="keywordflow">return</span> (status);
|
||||
<a name="l00663"></a>00663 }
|
||||
<a name="l00664"></a>00664
|
||||
</pre></div></div>
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||||
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