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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_hypotf.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_hypotf.c')
| -rw-r--r-- | math/w_hypotf.c | 31 |
1 files changed, 9 insertions, 22 deletions
diff --git a/math/w_hypotf.c b/math/w_hypotf.c index e1f074f75e..6042b8802d 100644 --- a/math/w_hypotf.c +++ b/math/w_hypotf.c @@ -8,15 +8,11 @@ * * 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_hypotf.c,v 1.3 1995/05/10 20:49:09 jtc Exp $"; -#endif - /* * wrapper hypotf(x,y) */ @@ -25,24 +21,15 @@ static char rcsid[] = "$NetBSD: w_hypotf.c,v 1.3 1995/05/10 20:49:09 jtc Exp $"; #include <math_private.h> -#ifdef __STDC__ - float __hypotf(float x, float y) /* wrapper hypotf */ -#else - float __hypotf(x,y) /* wrapper hypotf */ - float x,y; -#endif +float +__hypotf(float x, float y) { -#ifdef _IEEE_LIBM - return __ieee754_hypotf(x,y); -#else - float z; - z = __ieee754_hypotf(x,y); - if(_LIB_VERSION == _IEEE_) return z; - if((!__finitef(z))&&__finitef(x)&&__finitef(y)) + float z = __ieee754_hypotf(x,y); + if(__builtin_expect(!__finitef(z), 0) + && __finitef(x) && __finitef(y) && _LIB_VERSION != _IEEE_) /* hypot overflow */ - return (float)__kernel_standard((double)x,(double)y,104); - else - return z; -#endif + return __kernel_standard_f(x, y, 104); + + return z; } weak_alias (__hypotf, hypotf) |