xref: /freebsd/lib/libc/string/wcscmp.c (revision 8a16b7a18f5d0b031f09832fd7752fba717e2a97)
19829d36aSTakuya SHIOZAKI /*-
2*8a16b7a1SPedro F. Giffuni  * SPDX-License-Identifier: BSD-3-Clause
3*8a16b7a1SPedro F. Giffuni  *
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.
183fb3b97cSEd Maste  * 3. Neither the name of the University nor the names of its contributors
199829d36aSTakuya SHIOZAKI  *    may be used to endorse or promote products derived from this software
209829d36aSTakuya SHIOZAKI  *    without specific prior written permission.
219829d36aSTakuya SHIOZAKI  *
229829d36aSTakuya SHIOZAKI  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
239829d36aSTakuya SHIOZAKI  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
249829d36aSTakuya SHIOZAKI  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
259829d36aSTakuya SHIOZAKI  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
269829d36aSTakuya SHIOZAKI  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
279829d36aSTakuya SHIOZAKI  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
289829d36aSTakuya SHIOZAKI  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
299829d36aSTakuya SHIOZAKI  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
309829d36aSTakuya SHIOZAKI  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
319829d36aSTakuya SHIOZAKI  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
329829d36aSTakuya SHIOZAKI  * SUCH DAMAGE.
339829d36aSTakuya SHIOZAKI  */
349829d36aSTakuya SHIOZAKI 
359829d36aSTakuya SHIOZAKI #include <sys/cdefs.h>
369829d36aSTakuya SHIOZAKI #if defined(LIBC_SCCS) && !defined(lint)
379829d36aSTakuya SHIOZAKI static char sccsid[] = "@(#)strcmp.c	8.1 (Berkeley) 6/4/93";
38333fc21eSDavid E. O'Brien #if 0
39fb228844STim J. Robbins __RCSID("$NetBSD: wcscmp.c,v 1.3 2001/01/05 12:13:12 itojun Exp $");
40333fc21eSDavid E. O'Brien #endif
419829d36aSTakuya SHIOZAKI #endif /* LIBC_SCCS and not lint */
42de5fe5d5SDavid E. O'Brien __FBSDID("$FreeBSD$");
439829d36aSTakuya SHIOZAKI 
449829d36aSTakuya SHIOZAKI #include <wchar.h>
459829d36aSTakuya SHIOZAKI 
469829d36aSTakuya SHIOZAKI /*
479829d36aSTakuya SHIOZAKI  * Compare strings.
489829d36aSTakuya SHIOZAKI  */
499829d36aSTakuya SHIOZAKI int
50bd604b4bSDaniel Gerzo wcscmp(const wchar_t *s1, const wchar_t *s2)
519829d36aSTakuya SHIOZAKI {
529829d36aSTakuya SHIOZAKI 
539829d36aSTakuya SHIOZAKI 	while (*s1 == *s2++)
54bd604b4bSDaniel Gerzo 		if (*s1++ == '\0')
559829d36aSTakuya SHIOZAKI 			return (0);
569829d36aSTakuya SHIOZAKI 	/* XXX assumes wchar_t = int */
579829d36aSTakuya SHIOZAKI 	return (*(const unsigned int *)s1 - *(const unsigned int *)--s2);
589829d36aSTakuya SHIOZAKI }
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