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wcsnlen - determine the length of a fixed-size wide-character
string
#include <wchar.h>
size_t wcsnlen (const wchar_t* s, size_t maxlen);
The wcsnlen
function is the wide-character equivalent of the strnlen function. It returns
the number of wide-characters in the string pointed to by s, not including
the terminating L'\0' character, but at most maxlen. In doing this, wcsnlen
looks only at the first maxlen wide-characters at s and never beyond s+maxlen.
The wcsnlen function returns wcslen(s), if that is less than
maxlen, or maxlen if there is no L'\0' character among the first maxlen wide
characters pointed to by s.
This function is a GNU extension.
strnlen(3)
, wcslen(3)
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