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[glibc.git] / wcsmbs / wcpcpy.c
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1 /* Copyright (C) 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>, 1996.
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.
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.
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. */
20 #include <wchar.h>
22 #define __need_ptrdiff_t
23 #include <stddef.h>
26 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
27 DEST. */
28 wchar_t *
29 __wcpcpy (dest, src)
30 wchar_t *dest;
31 const wchar_t *src;
33 wchar_t *wcp = (wchar_t *) dest - 1;
34 wint_t c;
35 const ptrdiff_t off = src - dest + 1;
39 c = wcp[off];
40 *++wcp = c;
42 while (c != L'\0');
44 return wcp;
47 weak_alias (__wcpcpy, wcpcpy)