wcslen man page

wcslen — determine the length of a wide-character string


#include <wchar.h>

size_t wcslen(const wchar_t *s);


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

Return Value

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


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

Interface Attribute Value
wcslen() Thread safety MT-Safe

Conforming to

POSIX.1-2001, POSIX.1-2008, C99.

See Also



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Referenced By

signal-safety(7), strlen(3), wcsnlen(3).

2015-08-08 GNU Linux Programmer's Manual