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: wcsncat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
27   */
28  
29  #include <sys/cdefs.h>
30  #if 0
31  #if defined(LIBC_SCCS) && !defined(lint)
32  __RCSID("$NetBSD: wcsncat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $");
33  #endif /* LIBC_SCCS and not lint */
34  #endif
35  __FBSDID("$FreeBSD: src/lib/libc/string/wcsncat.c,v 1.8 2009/02/03 17:58:20 danger Exp $");
36  
37  #include <wchar.h>
38  
39  wchar_t *
40  wcsncat(wchar_t * __restrict s1, const wchar_t * __restrict s2, size_t n)
41  {
42  	wchar_t *p;
43  	wchar_t *q;
44  	const wchar_t *r;
45  
46  	p = s1;
47  	while (*p)
48  		p++;
49  	q = p;
50  	r = s2;
51  	while (*r && n) {
52  		*q++ = *r++;
53  		n--;
54  	}
55  	*q = '\0';
56  	return s1;
57  }