Manual Reference Pages  - WCWIDTH (3)

NAME

wcwidth - determine columns needed for a wide character

CONTENTS

Synopsis
Description
Notes
Colophon

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 3.44 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/.


GNU WCWIDTH (3) 2011-09-28
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