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_lgamma_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_lgamma_r.c')
| -rw-r--r-- | math/w_lgamma_r.c | 35 |
1 files changed, 11 insertions, 24 deletions
diff --git a/math/w_lgamma_r.c b/math/w_lgamma_r.c index bec2c6e20a..9d00f58ab7 100644 --- a/math/w_lgamma_r.c +++ b/math/w_lgamma_r.c @@ -10,10 +10,6 @@ * ==================================================== */ -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: w_lgamma_r.c,v 1.6 1995/05/10 20:49:27 jtc Exp $"; -#endif - /* * wrapper double lgamma_r(double x, int *signgamp) */ @@ -22,27 +18,18 @@ static char rcsid[] = "$NetBSD: w_lgamma_r.c,v 1.6 1995/05/10 20:49:27 jtc Exp $ #include <math_private.h> -#ifdef __STDC__ - double __lgamma_r(double x, int *signgamp) /* wrapper lgamma_r */ -#else - double __lgamma_r(x,signgamp) /* wrapper lgamma_r */ - double x; int *signgamp; -#endif +double +__lgamma_r(double x, int *signgamp) { -#ifdef _IEEE_LIBM - return __ieee754_lgamma_r(x,signgamp); -#else - double y; - y = __ieee754_lgamma_r(x,signgamp); - if(_LIB_VERSION == _IEEE_) return y; - if(!__finite(y)&&__finite(x)) { - if(__floor(x)==x&&x<=0.0) - return __kernel_standard(x,x,15); /* lgamma pole */ - else - return __kernel_standard(x,x,14); /* lgamma overflow */ - } else - return y; -#endif + double y = __ieee754_lgamma_r(x,signgamp); + if(__builtin_expect(!__finite(y), 0) + && __finite(x) && _LIB_VERSION != _IEEE_) + return __kernel_standard(x, x, + __floor(x)==x&&x<=0.0 + ? 15 /* lgamma pole */ + : 14); /* lgamma overflow */ + + return y; } weak_alias (__lgamma_r, lgamma_r) #ifdef NO_LONG_DOUBLE |