mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 01:21:06 +00:00
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* FMA version of fmaf.
|
|
Copyright (C) 2009-2015 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <config.h>
|
|
#include <math.h>
|
|
#include <init-arch.h>
|
|
|
|
#ifdef HAVE_AVX_SUPPORT
|
|
|
|
extern float __fmaf_sse2 (float x, float y, float z) attribute_hidden;
|
|
|
|
|
|
static float
|
|
__fmaf_fma3 (float x, float y, float z)
|
|
{
|
|
asm ("vfmadd213ss %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
|
|
return x;
|
|
}
|
|
|
|
|
|
# ifdef HAVE_FMA4_SUPPORT
|
|
static float
|
|
__fmaf_fma4 (float x, float y, float z)
|
|
{
|
|
asm ("vfmaddss %3, %2, %1, %0" : "=x" (x) : "x" (x), "x" (y), "x" (z));
|
|
return x;
|
|
}
|
|
# else
|
|
# undef HAS_FMA4
|
|
# define HAS_FMA4 0
|
|
# define __fmaf_fma4 ((void *) 0)
|
|
# endif
|
|
|
|
|
|
libm_ifunc (__fmaf, HAS_FMA
|
|
? __fmaf_fma3 : (HAS_FMA4 ? __fmaf_fma4 : __fmaf_sse2));
|
|
weak_alias (__fmaf, fmaf)
|
|
|
|
# define __fmaf __fmaf_sse2
|
|
#endif
|
|
|
|
#include <sysdeps/ieee754/dbl-64/s_fmaf.c>
|