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The
wcwidth()
function determines the number of column positions required for the
wide character
wc.
The value of
wc
must be a character representable as a
wchar_t,
and must be a wide-character code corresponding to a valid character in the
current locale.
RETURN VALUE
The
wcwidth()
function either returns 0 (if
wc
is a null wide-character code), or returns the number of
column positions to be occupied by the wide-character code
wc,
or returns -1 (if
wc
does not correspond to a printing wide-character code).
ERRORS
No errors are defined.
EXAMPLES
None.
APPLICATION USAGE
This function was removed from the final ISO C Amendment 1,
and the return value for a non-printable wide character
is not specified.