wmemcmp.c revision 1.2
1/* $OpenBSD: wmemcmp.c,v 1.2 2005/06/19 22:12:07 espie 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#if defined(LIBC_SCCS) && !defined(lint) 33static char *rcsid = "$OpenBSD: wmemcmp.c,v 1.2 2005/06/19 22:12:07 espie Exp $"; 34#endif /* LIBC_SCCS and not lint */ 35 36#include <wchar.h> 37#include "locale/runetype.h" 38 39int 40wmemcmp(const wchar_t *s1, const wchar_t *s2, size_t n) 41{ 42 size_t i; 43 44 for (i = 0; i < n; i++) { 45 if (*s1 != *s2) { 46 /* wchar might be unsigned */ 47 return *(const __nbrune_t *)s1 > 48 *(const __nbrune_t *)s2 ? 1 : -1; 49 } 50 s1++; 51 s2++; 52 } 53 return 0; 54} 55