source: trunk/libs/newlib/src/newlib/libc/string/wcscat.c @ 444

Last change on this file since 444 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 2.5 KB
Line 
1/*
2FUNCTION
3        <<wcscat>>---concatenate two wide-character strings
4INDEX
5        wcscat
6
7SYNOPSIS
8        #include <wchar.h>
9        wchar_t *wcscat(wchar_t *__restrict <[s1]>,
10                        const wchar_t *__restrict <[s2]>);
11
12DESCRIPTION
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
20RETURNS
21        The <<wcscat>> function returns <[s1]>;
22        no return value is reserved to indicate an error.
23
24PORTABILITY
25<<wcscat>> is ISO/IEC 9899/AMD1:1995 (ISO C).
26
27No 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
63wchar_t *
64wcscat (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}
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