|WCSWIDTH(3)||Library Functions Manual||WCSWIDTH(3)|
wchar_t *pwcs, size_t
wcswidth() function determines the number of column positions required for the first n characters of pwcs, or until a null wide character (L'\0') is encountered.
wcswidth() function returns 0 if pwcs is an empty string (L""), -1 if a non-printing wide character is encountered, otherwise it returns the number of column positions occupied.
wcswidth() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).
wcswidth() function was ported from NetBSD and first appeared in OpenBSD 3.8.
|July 25, 2011||OpenBSD-current|