WCWIDTH(3)                                          Linux Programmer's Manual                                         WCWIDTH(3)



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 3.25 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                                                        1999-07-25                                                 WCWIDTH(3)