aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/aarch64/morello/memrchr.c
blob: 4a3298c41752f73c524674074acf11804c669c72 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
/* Simple memrchr.

   Copyright (C) 2022 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; see the file COPYING.LIB.  If
   not, see <https://www.gnu.org/licenses/>.  */

#include <string.h>

void *__memrchr (const void *s, int c, size_t n)
{
  unsigned char uc = c;
  const unsigned char *us = s;
  while (n-- > 0)
    if (us[n] == uc)
      return (void *) (us + n);
  return NULL;
}

weak_alias (__memrchr, memrchr)