NAME
wcwidth —
number of column positions of a
wide-character code
SYNOPSIS
#include
<wchar.h>
int
wcwidth(wchar_t
wc);
DESCRIPTION
The
wcwidth()
function determines the number of column positions required to display the
wide character wc.
RETURN VALUES
The wcwidth() function returns 0 if the
wc argument is the NUL wide character (L'\0'), -1 if
wc is not printable, or otherwise it returns the
number of column positions the character occupies, which may be 0, 1, or
2.
SEE ALSO
STANDARDS
The wcwidth() function conforms to
IEEE Std 1003.1-2001 (“POSIX.1”).