1 /* Copyright (C) 1995-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <wchar.h>
19
20 /* Return length of string S. */
21 #ifdef WCSLEN
22 # define __wcslen WCSLEN
23 #endif
24
25 size_t
__wcslen(const wchar_t * s)26 __wcslen (const wchar_t *s)
27 {
28 size_t len = 0;
29
30 while (s[len] != L'\0')
31 {
32 if (s[++len] == L'\0')
33 return len;
34 if (s[++len] == L'\0')
35 return len;
36 if (s[++len] == L'\0')
37 return len;
38 ++len;
39 }
40
41 return len;
42 }
43 #ifndef WCSLEN
44 weak_alias (__wcslen, wcslen)
45 #endif
46