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WCSNLEN
Section: Linux Programmer's Manual (3)
Updated: 2010-09-15
Index
Return to Main Contents
NAME
wcsnlen - determine the length of a fixed-size wide-character string
SYNOPSIS
#include <wchar.h>
size_t wcsnlen(const wchar_t *s, size_t maxlen);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
wcsnlen():
-
- Since glibc 2.10:
-
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
-
_GNU_SOURCE
DESCRIPTION
The
wcsnlen()
function is the wide-character equivalent
of the
strnlen(3)
function.
It returns the number of wide-characters in the string pointed to by
s, not including the terminating Laq\0aq character, but at most
maxlen.
In doing this,
wcsnlen()
looks only at the first maxlen
wide-characters at s and never beyond s+maxlen.
RETURN VALUE
The
wcsnlen()
function returns wcslen(s), if that is less than
maxlen, or maxlen if there is no Laq\0aq character among the
first maxlen wide characters pointed to by s.
VERSIONS
The
wcsnlen()
function is provided in glibc since version 2.1.
CONFORMING TO
This function is a GNU extension.
SEE ALSO
strnlen(3),
wcslen(3)
COLOPHON
This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- VERSIONS
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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