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author | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
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committer | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
commit | 0ac5ae2335292908f39031b1ea9fe8edce433c0f (patch) | |
tree | f9d26c8abc0de39d18d4c13e70f6022cdc6b461f /sysdeps/ieee754/flt-32/e_gammaf_r.c | |
parent | a843a204a3e8a0dd53584dad3668771abaec84ac (diff) | |
download | glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.zip glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.gz glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.bz2 |
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 'sysdeps/ieee754/flt-32/e_gammaf_r.c')
-rw-r--r-- | sysdeps/ieee754/flt-32/e_gammaf_r.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sysdeps/ieee754/flt-32/e_gammaf_r.c b/sysdeps/ieee754/flt-32/e_gammaf_r.c index 926c84f..aeeddf1 100644 --- a/sysdeps/ieee754/flt-32/e_gammaf_r.c +++ b/sysdeps/ieee754/flt-32/e_gammaf_r.c @@ -1,5 +1,5 @@ /* Implementation of gamma function according to ISO C. - Copyright (C) 1997, 1999, 2001, 2004 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2001, 2004, 2011 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -32,19 +32,20 @@ __ieee754_gammaf_r (float x, int *signgamp) GET_FLOAT_WORD (hx, x); - if ((hx & 0x7fffffff) == 0) + if (__builtin_expect ((hx & 0x7fffffff) == 0, 0)) { /* Return value for x == 0 is Inf with divide by zero exception. */ *signgamp = 0; return 1.0 / x; } - if (hx < 0 && (u_int32_t) hx < 0xff800000 && __rintf (x) == x) + if (__builtin_expect (hx < 0, 0) + && (u_int32_t) hx < 0xff800000 && __rintf (x) == x) { /* Return value for integer x < 0 is NaN with invalid exception. */ *signgamp = 0; return (x - x) / (x - x); } - if (hx == 0xff800000) + if (__builtin_expect (hx == 0xff800000, 0)) { /* x == -Inf. According to ISO this is NaN. */ *signgamp = 0; @@ -54,3 +55,4 @@ __ieee754_gammaf_r (float x, int *signgamp) /* XXX FIXME. */ return __ieee754_expf (__ieee754_lgammaf_r (x, signgamp)); } +strong_alias (__ieee754_gammaf_r, __gammaf_r_finite) |