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Add branch predictions to complex math code
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@ -1,5 +1,5 @@
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/* Compute complex natural logarithm.
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Copyright (C) 1997 Free Software Foundation, Inc.
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Copyright (C) 1997, 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -31,7 +31,7 @@ __clogf (__complex__ float x)
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int rcls = fpclassify (__real__ x);
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int icls = fpclassify (__imag__ x);
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if (rcls == FP_ZERO && icls == FP_ZERO)
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if (__builtin_expect (rcls == FP_ZERO && icls == FP_ZERO, 0))
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{
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/* Real and imaginary part are 0.0. */
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__imag__ result = signbit (__real__ x) ? M_PI : 0.0;
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@ -39,7 +39,7 @@ __clogf (__complex__ float x)
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/* Yes, the following line raises an exception. */
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__real__ result = -1.0 / fabsf (__real__ x);
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}
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else if (rcls != FP_NAN && icls != FP_NAN)
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else if (__builtin_expect (rcls != FP_NAN && icls != FP_NAN, 1))
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{
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/* Neither real nor imaginary part is NaN. */
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__real__ result = __ieee754_logf (__ieee754_hypotf (__real__ x,
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