1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1986 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32/*
33 * Concatenate s2 on the end of s1. S1's space must be large enough.
34 * At most n characters are moved.
35 * return s1.
36 */
37
38#pragma weak _wcsncat = wcsncat
39#pragma weak _wsncat = wsncat
40
41#include "lint.h"
42#include <stdlib.h>
43#include <wchar.h>
44
45wchar_t *
46wcsncat(wchar_t *s1, const wchar_t *s2, size_t n)
47{
48	wchar_t *os1 = s1;
49
50	while (*s1++) /* find end of s1 */
51		;
52	++n;
53	--s1;
54	while (*s1++ = *s2++) /* copy s2 to s1 */
55		if (--n == 0) {  /* at most n chars */
56			*--s1 = 0;
57			break;
58		}
59	return (os1);
60}
61
62wchar_t *
63wsncat(wchar_t *s1, const wchar_t *s2, size_t n)
64{
65	return (wcsncat(s1, s2, n));
66}
67