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| author | Ulrich Drepper <drepper@gmail.com> | 2011-10-22 00:32:39 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-10-22 00:32:39 -0400 |
| commit | bc62c2fb152d6ffec63975d88fd8f1bc3d3b7c01 (patch) | |
| tree | bbb67e94ed1a9ba0becbe752c6853c199c639070 /math/s_ccosh.c | |
| parent | c196fed8f01a8599dd43edf1c7a1ea3ba9ed0598 (diff) | |
| download | glibc-bc62c2fb152d6ffec63975d88fd8f1bc3d3b7c01.tar.gz glibc-bc62c2fb152d6ffec63975d88fd8f1bc3d3b7c01.tar.xz glibc-bc62c2fb152d6ffec63975d88fd8f1bc3d3b7c01.zip | |
Optimization to some complex math functions
Also, change last reference to __sqrt into __sqrt to easily.
Diffstat (limited to 'math/s_ccosh.c')
| -rw-r--r-- | math/s_ccosh.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/math/s_ccosh.c b/math/s_ccosh.c index 83aa025d42..c10e5d899f 100644 --- a/math/s_ccosh.c +++ b/math/s_ccosh.c @@ -1,5 +1,5 @@ /* Complex cosine hyperbole function for double. - 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 @@ __ccosh (__complex__ double 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. */ double sinh_val = __ieee754_sinh (__real__ x); @@ -52,22 +52,14 @@ __ccosh (__complex__ double x) __imag__ retval = __real__ x == 0.0 ? 0.0 : __nan (""); __real__ retval = __nan ("") + __nan (""); -#ifdef FE_INVALID if (icls == FP_INFINITE) feraiseexcept (FE_INVALID); -#endif } } else if (rcls == FP_INFINITE) { /* Real part is infinite. */ - if (icls == FP_ZERO) - { - /* Imaginary part is 0.0. */ - __real__ retval = HUGE_VAL; - __imag__ retval = __imag__ x * __copysign (1.0, __real__ x); - } - else if (icls > FP_ZERO) + if (__builtin_expect (icls > FP_ZERO, 1)) { /* Imaginary part is finite. */ double sinix, cosix; @@ -78,16 +70,20 @@ __ccosh (__complex__ double x) __imag__ retval = (__copysign (HUGE_VAL, sinix) * __copysign (1.0, __real__ x)); } + else if (icls == FP_ZERO) + { + /* Imaginary part is 0.0. */ + __real__ retval = HUGE_VAL; + __imag__ retval = __imag__ x * __copysign (1.0, __real__ x); + } else { /* The addition raises the invalid exception. */ __real__ retval = HUGE_VAL; __imag__ retval = __nan ("") + __nan (""); -#ifdef FE_INVALID if (icls == FP_INFINITE) feraiseexcept (FE_INVALID); -#endif } } else |