WCWIDTH
Section: Linux Programmer's Manual (3)
Updated: 1999-07-25
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NAME
wcwidth - determine columns needed for a wide character
SYNOPSIS
#define _XOPEN_SOURCE
#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 Laq\0aq, the value is 0.
Otherwise -1 is returned.
RETURN VALUE
The
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
int wcwidth(wint_t c);
NOTES
The behavior of
wcwidth()
depends on the
LC_CTYPE
category of the
current locale.
SEE ALSO
iswprint(3),
wcswidth(3),
feature_test_macros(7)
COLOPHON
This page is part of release 3.22 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.