WCWIDTH

Section: Linux Programmer's Manual (3)
Updated: 2011-09-28
Index Return to Main Contents
 

NAME

wcwidth - determine columns needed for a wide character  

SYNOPSIS

#define _XOPEN_SOURCE       /* See feature_test_macros(7) */
#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 null wide character (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

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)  

COLOPHON

This page is part of release 3.54 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
NOTES
SEE ALSO
COLOPHON

This document was created by man2html, using the manual pages.
Time: 09:09:36 GMT, January 17, 2018