wcslen man page

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.

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 terminating 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 terminating null wide-character code, and the value of maxlen. The wcsnlen() function shall never examine more than the first maxlen characters 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.

See Also

strlen()

The Base Definitions volume of POSIX.1‐2008, <wchar.h>

Info

2013 IEEE/The Open Group POSIX Programmer's Manual