1/* Multiple versions of IEEE 754 atan.
2 Copyright (C) 2017-2024 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-finite.h>
22
23extern double __redirect_ieee754_atan2 (double, double);
24
25# define SYMBOL_NAME ieee754_atan2
26# include "ifunc-avx-fma4.h"
27
28libc_ifunc_redirected (__redirect_ieee754_atan2,
29 __ieee754_atan2, IFUNC_SELECTOR ());
30libm_alias_finite (__ieee754_atan2, __atan2)
31
32# define __ieee754_atan2 __ieee754_atan2_sse2
33#endif
34#include <sysdeps/ieee754/dbl-64/e_atan2.c>
35

source code of glibc/sysdeps/x86_64/fpu/multiarch/e_atan2.c