Sun Microsystems, Inc.
spacerspacer
spacer   www.sun.com docs.sun.com | | |  
spacer
black dot
   
A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z
    
 
Standard C Library Functionsfwide(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 TYPEATTRIBUTE VALUE
MT-LevelMT-Safe

SEE ALSO

 

attributes(5)


SunOS 5.9Go To TopLast Changed 3 Feb 1998

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.