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  1. /*
  2. FUNCTION
  3.         <<wcscat>>---concatenate two wide-character strings
  4. INDEX
  5.         wcscat
  6.  
  7. ANSI_SYNOPSIS
  8.         #include <wchar.h>
  9.         wchar_t *wcscat(wchar_t *__restrict <[s1]>,
  10.                         const wchar_t *__restrict <[s2]>);
  11.  
  12. TRAD_SYNOPSIS
  13.         wchar_t *wcscat(<[s1]>, <[s2]>
  14.         wchar_t *__restrict <[s1]>;
  15.         const wchar_t *__restrict <[s2]>;
  16.  
  17. DESCRIPTION
  18.         The <<wcscat>> function appends a copy of the wide-character string
  19.         pointed to by <[s2]> (including the terminating null wide-character
  20.         code) to the end of the wide-character string pointed to by <[s1]>.
  21.         The initial wide-character code of <[s2]> overwrites the null
  22.         wide-character code at the end of <[s1]>. If copying takes place between
  23.         objects that overlap, the behaviour is undefined.
  24.  
  25. RETURNS
  26.         The <<wcscat>> function returns <[s1]>;
  27.         no return value is reserved to indicate an error.
  28.  
  29. PORTABILITY
  30. <<wcscat>> is ISO/IEC 9899/AMD1:1995 (ISO C).
  31.  
  32. No supporting OS subroutines are required.
  33. */
  34.  
  35. /*      $NetBSD: wcscat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $        */
  36.  
  37. /*-
  38.  * Copyright (c)1999 Citrus Project,
  39.  * All rights reserved.
  40.  *
  41.  * Redistribution and use in source and binary forms, with or without
  42.  * modification, are permitted provided that the following conditions
  43.  * are met:
  44.  * 1. Redistributions of source code must retain the above copyright
  45.  *    notice, this list of conditions and the following disclaimer.
  46.  * 2. Redistributions in binary form must reproduce the above copyright
  47.  *    notice, this list of conditions and the following disclaimer in the
  48.  *    documentation and/or other materials provided with the distribution.
  49.  *
  50.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  51.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  54.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60.  * SUCH DAMAGE.
  61.  *
  62.  *      citrus Id: wcscat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
  63.  */
  64.  
  65. #include <_ansi.h>
  66. #include <wchar.h>
  67.  
  68. wchar_t *
  69. _DEFUN (wcscat, (s1, s2),
  70.         wchar_t *__restrict s1 _AND
  71.         _CONST wchar_t *__restrict s2)
  72. {
  73.   wchar_t *p;
  74.   wchar_t *q;
  75.   _CONST wchar_t *r;
  76.  
  77.   p = s1;
  78.   while (*p)
  79.     p++;
  80.   q = p;
  81.   r = s2;
  82.   while (*r)
  83.     *q++ = *r++;
  84.   *q = '\0';
  85.   return s1;
  86. }
  87.