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| author | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
| commit | 0ac5ae2335292908f39031b1ea9fe8edce433c0f (patch) | |
| tree | f9d26c8abc0de39d18d4c13e70f6022cdc6b461f /math/w_coshf.c | |
| parent | a843a204a3e8a0dd53584dad3668771abaec84ac (diff) | |
| download | glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.gz glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.bz2 glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.zip | |
Optimize libm
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
Diffstat (limited to 'math/w_coshf.c')
| -rw-r--r-- | math/w_coshf.c | 35 |
1 files changed, 11 insertions, 24 deletions
diff --git a/math/w_coshf.c b/math/w_coshf.c index 5e3477fdb7..df1f681205 100644 --- a/math/w_coshf.c +++ b/math/w_coshf.c @@ -1,5 +1,6 @@ /* w_coshf.c -- float version of w_cosh.c. * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. + * Optimizations by Ulrich Drepper <drepper@gmail.com>, 2011. */ /* @@ -8,40 +9,26 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: w_coshf.c,v 1.3 1995/05/10 20:48:49 jtc Exp $"; -#endif - -/* +/* * wrapper coshf(x) */ #include <math.h> #include <math_private.h> -#ifdef __STDC__ - float __coshf(float x) /* wrapper coshf */ -#else - float __coshf(x) /* wrapper coshf */ - float x; -#endif +float +__coshf (float x) { -#ifdef _IEEE_LIBM - return __ieee754_coshf(x); -#else - float z; - z = __ieee754_coshf(x); - if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z; - if(!__finite(z) && __finite(x)) { - /* cosh overflow */ - return (float)__kernel_standard((double)x,(double)x,105); - } else - return z; -#endif + float z = __ieee754_coshf (x); + if (__builtin_expect (!__finitef (z), 0) && __finitef (x) + && _LIB_VERSION != _IEEE_) + return __kernel_standard_f (x, x, 105); /* cosh overflow */ + + return z; } weak_alias (__coshf, coshf) |