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WCWIDTH(P)			    POSIX Programmer's Manual			       WCWIDTH(P)

NAME
       wcwidth - number of column positions of a wide-character code

SYNOPSIS
       #include <wchar.h>

       int wcwidth(wchar_t wc);

DESCRIPTION
       The  wcwidth()  function  shall	determine the number of column positions required for the
       wide character wc. The application shall ensure that the value of wc is a character repre-
       sentable  as a wchar_t, and is a wide-character code corresponding to a valid character in
       the current locale.

RETURN VALUE
       The wcwidth() function shall either return 0 (if wc is a  null  wide-character  code),  or
       return  the  number  of	column positions to be occupied by the wide-character code wc, or
       return -1 (if wc does not correspond to a printable wide-character code).

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       This function was removed from the final ISO/IEC 9899:1990/Amendment 1:1995 (E),  and  the
       return value for a non-printable wide character is not specified.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       wcswidth() , the Base Definitions volume of IEEE Std 1003.1-2001, <wchar.h>

COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable	Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				       WCWIDTH(P)
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