xref: /freebsd/lib/libc/string/wcscmp.c (revision 9829d36a8683ded23a8c7cbc12dac15ceb045e0a)
19829d36aSTakuya SHIOZAKI /*	$NetBSD$	*/
29829d36aSTakuya SHIOZAKI 
39829d36aSTakuya SHIOZAKI /*-
49829d36aSTakuya SHIOZAKI  * Copyright (c) 1990, 1993
59829d36aSTakuya SHIOZAKI  *	The Regents of the University of California.  All rights reserved.
69829d36aSTakuya SHIOZAKI  *
79829d36aSTakuya SHIOZAKI  * This code is derived from software contributed to Berkeley by
89829d36aSTakuya SHIOZAKI  * Chris Torek.
99829d36aSTakuya SHIOZAKI  *
109829d36aSTakuya SHIOZAKI  * Redistribution and use in source and binary forms, with or without
119829d36aSTakuya SHIOZAKI  * modification, are permitted provided that the following conditions
129829d36aSTakuya SHIOZAKI  * are met:
139829d36aSTakuya SHIOZAKI  * 1. Redistributions of source code must retain the above copyright
149829d36aSTakuya SHIOZAKI  *    notice, this list of conditions and the following disclaimer.
159829d36aSTakuya SHIOZAKI  * 2. Redistributions in binary form must reproduce the above copyright
169829d36aSTakuya SHIOZAKI  *    notice, this list of conditions and the following disclaimer in the
179829d36aSTakuya SHIOZAKI  *    documentation and/or other materials provided with the distribution.
189829d36aSTakuya SHIOZAKI  * 3. All advertising materials mentioning features or use of this software
199829d36aSTakuya SHIOZAKI  *    must display the following acknowledgement:
209829d36aSTakuya SHIOZAKI  *	This product includes software developed by the University of
219829d36aSTakuya SHIOZAKI  *	California, Berkeley and its contributors.
229829d36aSTakuya SHIOZAKI  * 4. Neither the name of the University nor the names of its contributors
239829d36aSTakuya SHIOZAKI  *    may be used to endorse or promote products derived from this software
249829d36aSTakuya SHIOZAKI  *    without specific prior written permission.
259829d36aSTakuya SHIOZAKI  *
269829d36aSTakuya SHIOZAKI  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
279829d36aSTakuya SHIOZAKI  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
289829d36aSTakuya SHIOZAKI  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
299829d36aSTakuya SHIOZAKI  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
309829d36aSTakuya SHIOZAKI  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
319829d36aSTakuya SHIOZAKI  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
329829d36aSTakuya SHIOZAKI  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
339829d36aSTakuya SHIOZAKI  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
349829d36aSTakuya SHIOZAKI  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
359829d36aSTakuya SHIOZAKI  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
369829d36aSTakuya SHIOZAKI  * SUCH DAMAGE.
379829d36aSTakuya SHIOZAKI  *
389829d36aSTakuya SHIOZAKI  * $FreeBSD$
399829d36aSTakuya SHIOZAKI  */
409829d36aSTakuya SHIOZAKI 
419829d36aSTakuya SHIOZAKI #include <sys/cdefs.h>
429829d36aSTakuya SHIOZAKI #if defined(LIBC_SCCS) && !defined(lint)
439829d36aSTakuya SHIOZAKI #if 0
449829d36aSTakuya SHIOZAKI static char sccsid[] = "@(#)strcmp.c	8.1 (Berkeley) 6/4/93";
459829d36aSTakuya SHIOZAKI #else
469829d36aSTakuya SHIOZAKI __RCSID("$NetBSD$");
479829d36aSTakuya SHIOZAKI #endif
489829d36aSTakuya SHIOZAKI #endif /* LIBC_SCCS and not lint */
499829d36aSTakuya SHIOZAKI 
509829d36aSTakuya SHIOZAKI #include <assert.h>
519829d36aSTakuya SHIOZAKI #include <wchar.h>
529829d36aSTakuya SHIOZAKI 
539829d36aSTakuya SHIOZAKI /*
549829d36aSTakuya SHIOZAKI  * Compare strings.
559829d36aSTakuya SHIOZAKI  */
569829d36aSTakuya SHIOZAKI int
579829d36aSTakuya SHIOZAKI wcscmp(s1, s2)
589829d36aSTakuya SHIOZAKI 	const wchar_t *s1, *s2;
599829d36aSTakuya SHIOZAKI {
609829d36aSTakuya SHIOZAKI 
619829d36aSTakuya SHIOZAKI 	_DIAGASSERT(s1 != NULL);
629829d36aSTakuya SHIOZAKI 	_DIAGASSERT(s2 != NULL);
639829d36aSTakuya SHIOZAKI 
649829d36aSTakuya SHIOZAKI 	while (*s1 == *s2++)
659829d36aSTakuya SHIOZAKI 		if (*s1++ == 0)
669829d36aSTakuya SHIOZAKI 			return (0);
679829d36aSTakuya SHIOZAKI 	/* XXX assumes wchar_t = int */
689829d36aSTakuya SHIOZAKI 	return (*(const unsigned int *)s1 - *(const unsigned int *)--s2);
699829d36aSTakuya SHIOZAKI }
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