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wcwidth.3

WCWIDTH

Section: Linux Programmer's Manual (3)
Updated: 1999-07-25
Index Return to Main Contents
 

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 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), feature_test_macros(7)  

COLOPHON

This page is part of release 3.21 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

 

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