1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1986 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * Compare strings (at most n characters)
32 * returns: s1>s2: >0 s1==s2: 0 s1<s2: <0
33 */
34
35 #pragma weak _wcsncmp = wcsncmp
36 #pragma weak _wsncmp = wsncmp
37
38 #include "lint.h"
39 #include <stdlib.h>
40 #include <wchar.h>
41
42 int
wcsncmp(const wchar_t * s1,const wchar_t * s2,size_t n)43 wcsncmp(const wchar_t *s1, const wchar_t *s2, size_t n)
44 {
45 if (s1 == s2)
46 return (0);
47
48 n++;
49 while (--n > 0 && *s1 == *s2++)
50 if (*s1++ == 0)
51 return (0);
52 return ((n == 0) ? 0 : (*s1 - *(s2 - 1)));
53 }
54
55 int
wsncmp(const wchar_t * s1,const wchar_t * s2,size_t n)56 wsncmp(const wchar_t *s1, const wchar_t *s2, size_t n)
57 {
58 return (wcsncmp(s1, s2, n));
59 }
60