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

iswprint(3), wcswidth(3)

STANDARDS

The wcwidth() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).