Linux Standard Base Core Specification 3.1 | ||
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wcsnlen() is the wide-character equivalent of strnlen(). It returns the number of wide-characters in the string s, not including the terminating null wide character code, but at most maxlen. In doing this, wcsnlen() looks only at the first maxlen wide-characters at s and never beyond s + maxlen.
wcsnlen() returns wcslen()(s) if that is less than maxlen, or maxlen if there is no null wide character code among the first maxlen wide characters pointed to by s.
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