Update.
[glibc.git] / string / strnlen.c
blob17b1193f0b3aa995d1f6e77891ee61884377c866
1 /* Find the length of STRING, but scan at most MAXLEN characters.
2 Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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 <string.h>
22 /* Find the length of STRING, but scan at most MAXLEN characters.
23 If no '\0' terminator is found in that many characters, return MAXLEN. */
25 size_t
26 __strnlen (const char *string, size_t maxlen)
28 const char *end = memchr (string, '\0', maxlen);
29 return end ? end - string : maxlen;
31 weak_alias (__strnlen, strnlen)