1/* Copyright (C) 1995-2019 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 Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <stddef.h>
20#include <wchar.h>
21
22
23#ifndef WCSCPY
24# define WCSCPY wcscpy
25#endif
26
27/* Copy SRC to DEST. */
28wchar_t *
29WCSCPY (wchar_t *dest, const wchar_t *src)
30{
31 wint_t c;
32 wchar_t *wcp;
33
34 if (__alignof__ (wchar_t) >= sizeof (wchar_t))
35 {
36 const ptrdiff_t off = dest - src - 1;
37
38 wcp = (wchar_t *) src;
39
40 do
41 {
42 c = *wcp++;
43 wcp[off] = c;
44 }
45 while (c != L'\0');
46 }
47 else
48 {
49 wcp = dest;
50
51 do
52 {
53 c = *src++;
54 *wcp++ = c;
55 }
56 while (c != L'\0');
57 }
58
59 return dest;
60}
61