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[glibc.git] / wcsmbs / wcsnlen.c
blob5264a66d053a3baab980ee3a2d097afa31d39c38
1 /* Copyright (C) 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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>
23 /* Copy SRC to DEST. */
24 size_t
25 __wcsnlen (s, maxlen)
26 const wchar_t *s;
27 size_t maxlen;
29 size_t len = 0;
31 while (s[len] != L'\0' && maxlen > 0)
33 if (s[++len] == L'\0' || --maxlen == 0)
34 return len;
35 if (s[++len] == L'\0' || --maxlen == 0)
36 return len;
37 if (s[++len] == L'\0' || --maxlen == 0)
38 return len;
39 ++len;
42 return len;
44 weak_alias (__wcsnlen, wcsnlen)