1 /* $OpenBSD: wmemcmp.c,v 1.5 2015/09/12 16:23:14 guenther Exp $ */
2 /* $NetBSD: wmemcmp.c,v 1.3 2003/04/06 18:33:23 tshiozak Exp $ */
3
4 /*-
5 * Copyright (c)1999 Citrus Project,
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * citrus Id: wmemcmp.c,v 1.2 2000/12/20 14:08:31 itojun Exp
30 */
31
32 #include <wchar.h>
33 #include "locale/runetype.h"
34
35 int
wmemcmp(const wchar_t * s1,const wchar_t * s2,size_t n)36 wmemcmp(const wchar_t *s1, const wchar_t *s2, size_t n)
37 {
38 size_t i;
39
40 for (i = 0; i < n; i++) {
41 if (*s1 != *s2) {
42 /* wchar might be unsigned */
43 return *(const rune_t *)s1 >
44 *(const rune_t *)s2 ? 1 : -1;
45 }
46 s1++;
47 s2++;
48 }
49 return 0;
50 }
51 DEF_STRONG(wmemcmp);
52