wcwidth

Sommaire

NAME

wcwidth - determine columns needed for a wide character

SYNOPSIS

 #include <wchar.h>
 
 int wcwidth(wchar_t c);

DESCRIPTION

The wcwidth() function returns the number of columns needed to represent the wide character c. If c is a printable wide character, the value is at least 0. If c is L'\0', the value is 0. Otherwise -1 is returned.

RETURN VALUE

The wcwidth() function returns the number of column positions for c.

CONFORMING TO

C99.

Note that glibc before 2.2.5 used the prototype

 int wcwidth(wint_t c);

SEE ALSO

iswprint(3), wcswidth(3)

NOTES

The behaviour of wcwidth() depends on the LC_CTYPE category of the current locale.