1/* Multiple versions of strrchr.
2 Copyright (C) 2017-2022 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 multiple versions only for the definition in libc. */
20#if IS_IN (libc)
21# define strrchr __redirect_strrchr
22# include <string.h>
23# undef strrchr
24
25# define SYMBOL_NAME strrchr
26# include "ifunc-avx2.h"
27
28libc_ifunc_redirected (__redirect_strrchr, strrchr, IFUNC_SELECTOR ());
29weak_alias (strrchr, rindex);
30# ifdef SHARED
31__hidden_ver1 (strrchr, __GI_strrchr, __redirect_strrchr)
32 __attribute__((visibility ("hidden"))) __attribute_copy__ (strrchr);
33# endif
34#endif
35

source code of glibc/sysdeps/x86_64/multiarch/strrchr.c