string/FreeBSD/wmemcmp.c

   1 /*-
   2  * Copyright (c)1999 Citrus Project,
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *      citrus Id: wmemcmp.c,v 1.2 2000/12/20 14:08:31 itojun Exp
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #if 0
  31 #if defined(LIBC_SCCS) && !defined(lint)
  32 __RCSID("$NetBSD: wmemcmp.c,v 1.1 2000/12/23 23:14:37 itojun Exp $");
  33 #endif /* LIBC_SCCS and not lint */
  34 #endif
  35 __FBSDID("$FreeBSD: src/lib/libc/string/wmemcmp.c,v 1.6 2002/09/21 00:29:23 tjr Exp $");
  36
  37 #include <wchar.h>
  38
  39 int
  40 wmemcmp(s1, s2, n)
  41         const wchar_t *s1;
  42         const wchar_t *s2;
  43         size_t n;
  44 {
  45         size_t i;
  46
  47         for (i = 0; i < n; i++) {
  48                 if (*s1 != *s2) {
  49                         /* wchar might be unsigned */
  50                         return *s1 > *s2 ? 1 : -1;
  51                 }
  52                 s1++;
  53                 s2++;
  54         }
  55         return 0;
  56 }