1/* Search character in UTF-32 string.
2   Copyright (C) 1999, 2002, 2006, 2009-2010 Free Software Foundation, Inc.
3   Written by Bruno Haible <bruno@clisp.org>, 2002.
4
5   This program is free software: you can redistribute it and/or modify it
6   under the terms of the GNU Lesser General Public License as published
7   by the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program 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 License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include <config.h>
19
20/* Specification.  */
21#include "unistr.h"
22
23uint32_t *
24u32_strrchr (const uint32_t *s, ucs4_t uc)
25{
26  /* Calling u32_strlen and then searching from the other end would cause more
27     memory accesses. Avoid that, at the cost of a few more comparisons.  */
28  uint32_t *result = NULL;
29
30  for (;; s++)
31    {
32      if (*s == uc)
33        result = (uint32_t *) s;
34      if (*s == 0)
35        break;
36    }
37  return result;
38}
39