WCSLEN(3) manual page
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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 (Laq\0aq).
The wcslen() function returns
the number of wide characters in s.
The
wcslen() function is thread-safe.
C99.
strlen(3)
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