lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-07-28 00:21:52 +03:00
Code Activity

Optimization to some complex math functions

Browse Source 
Also, change last reference to __sqrt into __sqrt to easily.
This commit is contained in:
Ulrich Drepper
2011-10-22 00:32:39 -04:00
parent c196fed8f0
commit bc62c2fb15
23 changed files with 132 additions and 258 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
math/s_ccoshf.c
View File

@ -1,5 +1,5 @@
/* Complex cosine hyperbole function for float.
Copyright (C) 1997 Free Software Foundation, Inc.
Copyright (C) 1997, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -32,10 +32,10 @@ __ccoshf (__complex__ float x)
int rcls = fpclassify (__real__ x);
int icls = fpclassify (__imag__ x);
if (rcls >= FP_ZERO)
if (__builtin_expect (rcls >= FP_ZERO, 1))
{
/* Real part is finite. */
if (icls >= FP_ZERO)
if (__builtin_expect (icls >= FP_ZERO, 1))
{
/* Imaginary part is finite. */
float sinh_val = __ieee754_sinhf (__real__ x);
@ -52,22 +52,14 @@ __ccoshf (__complex__ float x)
__imag__ retval = __real__ x == 0.0 ? 0.0 : __nanf ("");
__real__ retval = __nanf ("");
#ifdef FE_INVALID
if (icls == FP_INFINITE)
feraiseexcept (FE_INVALID);
#endif
}
}
else if (rcls == FP_INFINITE)
else if (__builtin_expect (rcls == FP_INFINITE, 1))
{
/* Real part is infinite. */
if (icls == FP_ZERO)
{
/* Imaginary part is 0.0. */
__real__ retval = HUGE_VALF;
__imag__ retval = __imag__ x * __copysignf (1.0, __real__ x);
}
else if (icls > FP_ZERO)
if (__builtin_expect (icls > FP_ZERO, 1))
{
/* Imaginary part is finite. */
float sinix, cosix;
@ -78,6 +70,12 @@ __ccoshf (__complex__ float x)
__imag__ retval = (__copysignf (HUGE_VALF, sinix)
* __copysignf (1.0, __real__ x));
}
else if (icls == FP_ZERO)
{
/* Imaginary part is 0.0. */
__real__ retval = HUGE_VALF;
__imag__ retval = __imag__ x * __copysignf (1.0, __real__ x);
}
else
{
/* The addition raises the invalid exception. */