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authorUlrich Drepper <drepper@redhat.com>2009-07-29 15:26:06 -0700
committerUlrich Drepper <drepper@redhat.com>2009-07-29 15:26:06 -0700
commit78c4ef475d47a2289635f74b726f52defedb4651 (patch)
tree60375b37da7613577b26a3dc08105fbecbe24266 /math
parent9a1d2d455540ff99a586da5b550cc768f4f6fd5c (diff)
downloadglibc-78c4ef475d47a2289635f74b726f52defedb4651.tar.gz
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Add support for x86-64 fma instruction.
Use it to implement fma and fmaf, if possible.
Diffstat (limited to 'math')
-rw-r--r--math/s_fma.c4
-rw-r--r--math/s_fmaf.c4
2 files changed, 6 insertions, 2 deletions
diff --git a/math/s_fma.c b/math/s_fma.c
index e5ff5a7228..476d1fe44c 100644
--- a/math/s_fma.c
+++ b/math/s_fma.c
@@ -1,5 +1,5 @@
 /* Compute x * y + z as ternary operation.
-   Copyright (C) 1997, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2001, 2009 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -25,7 +25,9 @@ __fma (double x, double y, double z)
 {
   return (x * y) + z;
 }
+#ifndef __fma
 weak_alias (__fma, fma)
+#endif
 
 #ifdef NO_LONG_DOUBLE
 strong_alias (__fma, __fmal)
diff --git a/math/s_fmaf.c b/math/s_fmaf.c
index caa7f3afe8..357296d70d 100644
--- a/math/s_fmaf.c
+++ b/math/s_fmaf.c
@@ -1,5 +1,5 @@
 /* Compute x * y + z as ternary operation.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2009 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -25,4 +25,6 @@ __fmaf (float x, float y, float z)
 {
   return (x * y) + z;
 }
+#ifndef __fmaf
 weak_alias (__fmaf, fmaf)
+#endif