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WCWIDTH(3) Library Functions Manual WCWIDTH(3)

wcwidthnumber of column positions of a wide-character code

#include <wchar.h>

int
wcwidth(wchar_t wc);

The () function determines the number of column positions required to display the wide character wc.

The wcwidth() function returns 0 if the wc argument is a null wide character (L'\0'), -1 if wc is not printable, otherwise it returns the number of column positions the character occupies.

iswprint(3), wcswidth(3)

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

April 3, 2011 OpenBSD-5.7