xref: /freebsd/lib/libc/string/wcscat.c (revision 9829d36a8683ded23a8c7cbc12dac15ceb045e0a)
1 /*	$NetBSD: wcscat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $	*/
2 /*-
3  * Copyright (c)1999 Citrus Project,
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  *
27  *	citrus Id: wcscat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
28  *
29  * $FreeBSD$
30  */
31 
32 #include <sys/cdefs.h>
33 #if defined(LIBC_SCCS) && !defined(lint)
34 __RCSID("$NetBSD: wcscat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $");
35 #endif /* LIBC_SCCS and not lint */
36 
37 #include <assert.h>
38 #include <wchar.h>
39 
40 wchar_t *
41 wcscat(s1, s2)
42 	wchar_t *s1;
43 	const wchar_t *s2;
44 {
45 	wchar_t *p;
46 	wchar_t *q;
47 	const wchar_t *r;
48 
49 	_DIAGASSERT(s1 != NULL);
50 	_DIAGASSERT(s2 != NULL);
51 
52 	p = s1;
53 	while (*p)
54 		p++;
55 	q = p;
56 	r = s2;
57 	while (*r)
58 		*q++ = *r++;
59 	*q = '\0';
60 	return s1;
61 }
62