Optimize libm

libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.

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 926c84f368..aeeddf1a96 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)