diff options
| 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_lgammaf_r.c | |
| parent | a843a204a3e8a0dd53584dad3668771abaec84ac (diff) | |
| download | glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.gz glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.xz 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_lgammaf_r.c')
| -rw-r--r-- | math/w_lgammaf_r.c | 43 |
1 files changed, 14 insertions, 29 deletions
diff --git a/math/w_lgammaf_r.c b/math/w_lgammaf_r.c index 3758fa0d06..683fe72dc6 100644 --- a/math/w_lgammaf_r.c +++ b/math/w_lgammaf_r.c @@ -8,16 +8,12 @@ * * 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_lgammaf_r.c,v 1.3 1995/05/10 20:49:32 jtc Exp $"; -#endif - -/* +/* * wrapper float lgammaf_r(float x, int *signgamp) */ @@ -25,28 +21,17 @@ static char rcsid[] = "$NetBSD: w_lgammaf_r.c,v 1.3 1995/05/10 20:49:32 jtc Exp #include <math_private.h> -#ifdef __STDC__ - float __lgammaf_r(float x, int *signgamp) /* wrapper lgammaf_r */ -#else - float __lgammaf_r(x,signgamp) /* wrapper lgammaf_r */ - float x; int *signgamp; -#endif +float +__lgammaf_r(float x, int *signgamp) { -#ifdef _IEEE_LIBM - return __ieee754_lgammaf_r(x,signgamp); -#else - float y; - y = __ieee754_lgammaf_r(x,signgamp); - if(_LIB_VERSION == _IEEE_) return y; - if(!__finitef(y)&&__finitef(x)) { - if(__floorf(x)==x&&x<=(float)0.0) - /* lgamma pole */ - return (float)__kernel_standard((double)x,(double)x,115); - else - /* lgamma overflow */ - return (float)__kernel_standard((double)x,(double)x,114); - } else - return y; -#endif -} + float y = __ieee754_lgammaf_r(x,signgamp); + if(__builtin_expect(!__finitef(y), 0) + && __finitef(x) && _LIB_VERSION != _IEEE_) + return __kernel_standard_f(x, x, + __floorf(x)==x&&x<=0.0f + ? 115 /* lgamma pole */ + : 114); /* lgamma overflow */ + + return y; +} weak_alias (__lgammaf_r, lgammaf_r) |