mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
167f6230af
Now that both strlen and memrchr have word vectorized implementation, it should be faster to implement strrchr based on memrchr over the string length instead of calling strchr on a loop. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc-linux-gnu, and powerpc64-linux-gnu by removing the arch-specific assembly implementation and disabling multi-arch (it covers both LE and BE for 64 and 32 bits).
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <string.h>
|
|
|
|
#undef strrchr
|
|
|
|
#ifndef STRRCHR
|
|
# define STRRCHR strrchr
|
|
#endif
|
|
|
|
/* Find the last occurrence of C in S. */
|
|
char *
|
|
STRRCHR (const char *s, int c)
|
|
{
|
|
return __memrchr (s, c, strlen (s) + 1);
|
|
}
|
|
|
|
#ifdef weak_alias
|
|
#undef rindex
|
|
weak_alias (strrchr, rindex)
|
|
#endif
|
|
libc_hidden_builtin_def (strrchr)
|