1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* FMA version of fma.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
Contributed by Intel Corporation.
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 double __fma_sse2 (double x, double y, double z) attribute_hidden;
static double
__fma_fma3 (double x, double y, double z)
{
asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
return x;
}
# ifdef HAVE_FMA4_SUPPORT
static double
__fma_fma4 (double x, double y, double z)
{
asm ("vfmaddsd %3, %2, %1, %0" : "=x" (x) : "x" (x), "x" (y), "x" (z));
return x;
}
# else
# undef HAS_FMA4
# define HAS_FMA4 0
# define __fma_fma4 ((void *) 0)
# endif
libm_ifunc (__fma, HAS_FMA
? __fma_fma3 : (HAS_FMA4 ? __fma_fma4 : __fma_sse2));
weak_alias (__fma, fma)
# define __fma __fma_sse2
#endif
#include <sysdeps/ieee754/dbl-64/s_fma.c>
|
