fwide(3c) [opensolaris man page]

fwide(3C)						   Standard C Library Functions 						 fwide(3C)

NAME

       fwide - set stream orientation

SYNOPSIS

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

       int fwide(FILE *stream, int mode);

DESCRIPTION

       The  fwide() function determines the orientation of the stream pointed to by stream. If mode is greater than 0, the function first attempts
       to make the stream wide-orientated.  If mode is less than 0, the function first attempts to make the  stream  byte-orientated.	Otherwise,
       mode is 0 and the function does not alter the orientation of the stream.

       If the orientation of the stream has already been determined, fwide() does not change it.

       Because	no return value is reserved to indicate an error, an application wishing to check for error situations should set errno to 0, then
       call fwide(), then check errno and if it is non-zero, assume an error has occurred.

RETURN VALUES

       The fwide() function returns a value greater than 0 if, after the call, the stream has wide-orientation, a value less than 0 if the  stream
       has byte-orientation, or 0 if the stream has no orientation.

ERRORS

       The fwide() function may fail if:

       EBADF	The stream argument is not a valid stream.

USAGE

       A call to fwide() with  mode set to 0 can be used to determine the current orientation of a stream.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), standards(5)

SunOS 5.11							    24 Jul 2002 							 fwide(3C)

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

PROLOG

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

NAME

       fwide - set stream orientation

SYNOPSIS

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

       int fwide(FILE *stream, int mode);

DESCRIPTION

       The fwide() function shall determine the orientation of the stream pointed to by stream. If mode is greater than zero, the  function  first
       attempts to make the stream wide-oriented.  If mode is less than zero, the function first attempts to make the stream byte-oriented. Other-
       wise, mode is zero and the function does not alter the orientation of the stream.

       If the orientation of the stream has already been determined, fwide() shall not change it.

       Since no return value is reserved to indicate an error, an application wishing to check for error situations should set errno  to  0,  then
       call fwide(), then check errno, and if it is non-zero, assume an error has occurred.

RETURN VALUE

       The  fwide() function shall return a value greater than zero if, after the call, the stream has wide-orientation, a value less than zero if
       the stream has byte-orientation, or zero if the stream has no orientation.

ERRORS

       The fwide() function may fail if:

       EBADF  The stream argument is not a valid stream.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       A call to fwide() with mode set to zero can be used to determine the current orientation of a stream.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       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 Technol-
       ogy -- 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 original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003								 FWIDE(3P)