trusty (3) wcwidth.3.gz

Provided by: manpages-dev_3.54-1ubuntu1_all bug

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/.