WCSLEN(3) Linux Programmer's Manual WCSLEN(3) NAME wcslen - determine the length of a wide-character string SYNOPSIS #include <wchar.h> size_t wcslen(const wchar_t *s); DESCRIPTION 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, exclud‐ ing the terminating null wide character (L'\0'). 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 │ MT-Safe │ └──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘ CONFORMING TO POSIX.1-2001, POSIX.1-2008, C99. NOTES In cases where the input buffer may not contain a terminating null wide character, wcsnlen(3) should be used instead. SEE ALSO strlen(3) GNU 2021-08-27 WCSLEN(3)