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Add support for x86-64 fma instruction.

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Use it to implement fma and fmaf, if possible.
This commit is contained in:
Ulrich Drepper
2009-07-29 15:26:06 -07:00
parent 9a1d2d4555
commit 78c4ef475d
6 changed files with 110 additions and 2 deletions
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4
math/s_fma.c
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@ -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)