xref: /freebsd/lib/libc/string/wcsncat.c (revision e9ac41698b2f322d55ccf9da50a3596edb2c1800)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c)1999 Citrus Project,
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  *	citrus Id: wcsncat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
29  */
30 
31 #include <sys/cdefs.h>
32 #if 0
33 #if defined(LIBC_SCCS) && !defined(lint)
34 __RCSID("$NetBSD: wcsncat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $");
35 #endif /* LIBC_SCCS and not lint */
36 #endif
37 #include <wchar.h>
38 #include <ssp/ssp.h>
39 
40 wchar_t *
41 __ssp_real(wcsncat)(wchar_t * __restrict s1, const wchar_t * __restrict s2,
42     size_t n)
43 {
44 	wchar_t *p;
45 	wchar_t *q;
46 	const wchar_t *r;
47 
48 	p = s1;
49 	while (*p)
50 		p++;
51 	q = p;
52 	r = s2;
53 	while (n && *r) {
54 		*q++ = *r++;
55 		n--;
56 	}
57 	*q = '\0';
58 	return s1;
59 }
60