WCSLEN(3P) POSIX Programmer's Manual WCSLEN(3P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAME
wcslen, wcsnlen — get length of a fixed-sized wide-character string
SYNOPSIS
#include <wchar.h>
size_t wcslen(const wchar_t *ws);
size_t wcsnlen(const wchar_t *ws, size_t maxlen);
DESCRIPTION
For wcslen(): The functionality described on this reference page is
aligned with the ISO C standard. Any conflict between the requirements
described here and the ISO C standard is unintentional. This volume of
POSIX.1‐2008 defers to the ISO C standard.
The wcslen() function shall compute the number of wide-character codes
in the wide-character string to which ws points, not including the ter‐
minating null wide-character code.
The wcsnlen() function shall compute the smaller of the number of wide
characters in the string to which ws points, not including the termi‐
nating null wide-character code, and the value of maxlen. The
wcsnlen() function shall never examine more than the first maxlen char‐
acters of the wide-character string pointed to by ws.
RETURN VALUE
The wcslen() function shall return the length of ws.
The wcsnlen() function shall return an integer containing the smaller
of either the length of the wide-character string pointed to by ws or
maxlen.
No return values are reserved to indicate an error.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSOstrlen()
The Base Definitions volume of POSIX.1‐2008, <wchar.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the source
files to man page format. To report such errors, see https://www.ker‐
nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 WCSLEN(3P)
