WCTOB(3P)                                           POSIX Programmer's Manual                                          WCTOB(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

NAME
       wctob - wide-character to single-byte conversion

SYNOPSIS
       #include <stdio.h>
       #include <wchar.h>

       int wctob(wint_t c);


DESCRIPTION
       The wctob() function shall determine whether c corresponds to a member of the extended character set whose character rep-
       resentation is a single byte when in the initial shift state.

       The behavior of this function shall be affected by the LC_CTYPE category of the current locale.

RETURN VALUE
       The wctob() function shall return EOF if c does not correspond to a character with length one in the initial shift state.
       Otherwise, it shall return the single-byte representation of that character as an unsigned char converted to int.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       btowc(), 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,  Copy-
       right (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   original   Standard   can   be   obtained  online  at  http://www.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                     WCTOB(3P)