NAME
wcwidth - determine columns needed for a wide character
SYNOPSIS
#define _XOPEN_SOURCE
#include <wchar.h>
I int wcwidth(wchar_t c );
DESCRIPTION
The
R 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
R wcwidth ()
function returns the number of
column positions for c.
CONFORMING TO
POSIX.1-2001.
Note that glibc before 2.2.5 used the prototype
I int wcwidth(wint_t c );
NOTES
The behavior of
R wcwidth ()
depends on the
LC_CTYPE
category of the
current locale.
SEE ALSO
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