1/* Multiple versions of expm1.
2 Copyright (C) 2023-2024 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#include <sysdeps/x86/isa-level.h>
20#if MINIMUM_X86_ISA_LEVEL < AVX2_X86_ISA_LEVEL
21# include <libm-alias-double.h>
22
23extern double __redirect_expm1 (double);
24
25# define SYMBOL_NAME expm1
26# include "ifunc-fma.h"
27
28libc_ifunc_redirected (__redirect_expm1, __expm1, IFUNC_SELECTOR ());
29libm_alias_double (__expm1, expm1)
30
31# define __expm1 __expm1_sse2
32
33/* NB: __expm1 may be expanded to __expm1_sse2 in the following
34 prototypes. */
35extern long double __expm1l (long double);
36extern long double __expm1f128 (long double);
37
38#endif
39#include <sysdeps/ieee754/dbl-64/s_expm1.c>
40

source code of glibc/sysdeps/x86_64/fpu/multiarch/s_expm1.c