wcsmbs/wcscpy.c

   1 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <wchar.h>
  21
  22 #define __need_ptrdiff_t
  23 #include <stddef.h>
  24
  25
  26 /* Copy SRC to DEST.  */
  27 wchar_t *
  28 wcscpy (dest, src)
  29      wchar_t *dest;
  30      const wchar_t *src;
  31 {
  32   wchar_t *wcp = (wchar_t *) src;
  33   wint_t c;
  34   const ptrdiff_t off = dest - src - 1;
  35
  36   do
  37     {
  38       c = *wcp++;
  39       wcp[off] = c;
  40     }
  41   while (c != L'\0');
  42
  43   return dest;
  44 }