1/* FMA version of fma.
2 Copyright (C) 2009-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#define NO_MATH_REDIRECT
20#include <config.h>
21#define dfmal __hide_dfmal
22#define f32xfmaf64 __hide_f32xfmaf64
23#include <math.h>
24#undef dfmal
25#undef f32xfmaf64
26#include <init-arch.h>
27#include <libm-alias-double.h>
28#include <math-narrow-alias.h>
29
30extern double __fma_sse2 (double x, double y, double z) attribute_hidden;
31
32
33static double
34__fma_fma3 (double x, double y, double z)
35{
36 asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
37 return x;
38}
39
40
41static double
42__fma_fma4 (double x, double y, double z)
43{
44 asm ("vfmaddsd %3, %2, %1, %0" : "=x" (x) : "x" (x), "x" (y), "x" (z));
45 return x;
46}
47
48
49libm_ifunc (__fma, CPU_FEATURE_USABLE (FMA)
50 ? __fma_fma3 : (CPU_FEATURE_USABLE (FMA4)
51 ? __fma_fma4 : __fma_sse2));
52libm_alias_double (__fma, fma)
53libm_alias_double_narrow (__fma, fma)
54
55#define __fma __fma_sse2
56
57#include <sysdeps/ieee754/dbl-64/s_fma.c>
58