1/* Fused multiply-add of double value, narrowing the result to float.
2 x86 version.
3 Copyright (C) 2021-2023 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#define f32fmaf64 __hide_f32fmaf64
21#define f32fmaf32x __hide_f32fmaf32x
22#define ffmal __hide_ffmal
23#include <math.h>
24#undef f32fmaf64
25#undef f32fmaf32x
26#undef ffmal
27
28#include <math-narrow.h>
29
30#ifndef __FP_FAST_FMA
31/* Depending on the details of the glibc configuration, fma might use
32 either SSE or 387 arithmetic; ensure that both parts of the
33 floating-point state are handled in the round-to-odd code. If
34 __FP_FAST_FMA is defined, that implies that the compiler is using
35 SSE floating point and that the fma call will be inlined, so the
36 x86 macros will work with only the SSE state and that is
37 sufficient. */
38# undef libc_feholdexcept_setround
39# define libc_feholdexcept_setround default_libc_feholdexcept_setround
40# undef libc_feupdateenv_test
41# define libc_feupdateenv_test default_libc_feupdateenv_test
42#endif
43
44float
45__ffma (double x, double y, double z)
46{
47 NARROW_FMA_ROUND_TO_ODD (x, y, z, float, union ieee754_double, , mantissa1,
48 false);
49}
50libm_alias_float_double (fma)
51