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| author | Ulrich Drepper <drepper@gmail.com> | 2012-01-10 22:26:22 -0500 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2012-01-10 22:26:22 -0500 |
| commit | daa891c0e8900d0f03c16fde9c09f8d6f9a26a7d (patch) | |
| tree | 3b1bf170ebd79ce294d3a09e2c71d133f4bcdd73 /sysdeps/ieee754/flt-32/s_modff.c | |
| parent | e58ef0f20437e121a06e0eb3d6c6c10c3630746e (diff) | |
| download | glibc-daa891c0e8900d0f03c16fde9c09f8d6f9a26a7d.tar.gz glibc-daa891c0e8900d0f03c16fde9c09f8d6f9a26a7d.tar.xz glibc-daa891c0e8900d0f03c16fde9c09f8d6f9a26a7d.zip | |
Optimize s_modf
Diffstat (limited to 'sysdeps/ieee754/flt-32/s_modff.c')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_modff.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/sysdeps/ieee754/flt-32/s_modff.c b/sysdeps/ieee754/flt-32/s_modff.c index e6c22b2add..741b1c9b16 100644 --- a/sysdeps/ieee754/flt-32/s_modff.c +++ b/sysdeps/ieee754/flt-32/s_modff.c @@ -13,33 +13,21 @@ * ==================================================== */ -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: s_modff.c,v 1.4 1995/05/10 20:47:56 jtc Exp $"; -#endif - #include "math.h" #include "math_private.h" -#ifdef __STDC__ static const float one = 1.0; -#else -static float one = 1.0; -#endif -#ifdef __STDC__ - float __modff(float x, float *iptr) -#else - float __modff(x, iptr) - float x,*iptr; -#endif +float +__modff(float x, float *iptr) { int32_t i0,j0; u_int32_t i; GET_FLOAT_WORD(i0,x); j0 = ((i0>>23)&0xff)-0x7f; /* exponent of x */ - if(j0<23) { /* integer part in x */ + if(__builtin_expect(j0<23, 1)) { /* integer part in x */ if(j0<0) { /* |x|<1 */ - SET_FLOAT_WORD(*iptr,i0&0x80000000); /* *iptr = +-0 */ + SET_FLOAT_WORD(*iptr,i0&0x80000000); /* *iptr = +-0 */ return x; } else { i = (0x007fffff)>>j0; |