1 .\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
3 .\" This is free documentation; you can redistribute it and/or
4 .\" modify it under the terms of the GNU General Public License as
5 .\" published by the Free Software Foundation; either version 2 of
6 .\" the License, or (at your option) any later version.
8 .\" References consulted:
9 .\" GNU glibc-2 source code and manual
10 .\" Dinkumware C library reference http://www.dinkumware.com/
11 .\" OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
13 .TH WCSNLEN 3 2007-07-26 "GNU" "Linux Programmer's Manual"
15 wcsnlen \- determine the length of a fixed-size wide-character string
18 .B #define _GNU_SOURCE
21 .BI "size_t wcsnlen(const wchar_t *" s ", size_t " maxlen );
26 function is the wide-character equivalent
30 It returns the number of wide-characters in the string pointed to by
31 \fIs\fP, not including the terminating L\(aq\\0\(aq character, but at most
35 looks only at the first \fImaxlen\fP
36 wide-characters at \fIs\fP and never beyond \fIs+maxlen\fP.
40 function returns \fIwcslen(s)\fP, if that is less than
41 \fImaxlen\fP, or \fImaxlen\fP if there is no L\(aq\\0\(aq character among the
42 first \fImaxlen\fP wide characters pointed to by \fIs\fP.
44 This function is a GNU extension.