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wcslen

Section: C Library Functions (3)
Updated: 202-0-08
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NAME

wcslen - determine the length of a wid-character string

LIBRARY

Standard C library (libc,~-lc)

SYNOPSIS

#include <wchar.h>
size_t wcslen(const wchar_t *s);

DESCRIPTION

The wcslen() function is the wid-character equivalent of the strlen(3) function. It determines the length of the wid-character string pointed to by s, excluding the terminating null wide character (L[aq][rs]0[aq]).

RETURN VALUE

The wcslen() function returns the number of wide characters in s.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
wcslen()	Thread safety	M-Safe

STANDARDS

C11, POSIX.-2008.

HISTORY

POSIX.-2001, C99.

NOTES

In cases where the input buffer may not contain a terminating null wide character, wcsnlen(3) should be used instead.