1 /*
2 FUNCTION
3 <<wcscat>>---concatenate two wide-character strings
4 INDEX
5 wcscat
6
7 SYNOPSIS
8 #include <wchar.h>
9 wchar_t *wcscat(wchar_t *__restrict <[s1]>,
10 const wchar_t *__restrict <[s2]>);
11
12 DESCRIPTION
13 The <<wcscat>> function appends a copy of the wide-character string
14 pointed to by <[s2]> (including the terminating null wide-character
15 code) to the end of the wide-character string pointed to by <[s1]>.
16 The initial wide-character code of <[s2]> overwrites the null
17 wide-character code at the end of <[s1]>. If copying takes place between
18 objects that overlap, the behaviour is undefined.
19
20 RETURNS
21 The <<wcscat>> function returns <[s1]>;
22 no return value is reserved to indicate an error.
23
24 PORTABILITY
25 <<wcscat>> is ISO/IEC 9899/AMD1:1995 (ISO C).
26
27 No supporting OS subroutines are required.
28 */
29
30 /* $NetBSD: wcscat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $ */
31
32 /*-
33 * Copyright (c)1999 Citrus Project,
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 *
57 * citrus Id: wcscat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
58 */
59
60 #include <_ansi.h>
61 #include <wchar.h>
62
63 wchar_t *
wcscat(wchar_t * __restrict s1,const wchar_t * __restrict s2)64 wcscat (wchar_t *__restrict s1,
65 const wchar_t *__restrict s2)
66 {
67 wchar_t *p;
68 wchar_t *q;
69 const wchar_t *r;
70
71 p = s1;
72 while (*p)
73 p++;
74 q = p;
75 r = s2;
76 while (*r)
77 *q++ = *r++;
78 *q = '\0';
79 return s1;
80 }
81
