| FWIDE(3) | Library Functions Manual | FWIDE(3) | 
fwide —
#include <stdio.h>
#include <wchar.h>
int
  
  fwide(FILE
    *stream, int
  mode);
fwide() function determines the orientation of the
  stream pointed at by stream.
If the orientation of stream has already
    been determined, fwide() leaves it unchanged.
    Otherwise, fwide() sets the orientation of
    stream according to mode.
If mode is less than zero, stream is set to byte-oriented. If it is greater than zero, stream is set to wide-oriented. Otherwise, mode is zero, and stream is unchanged.
fwide() returns a value according to orientation after
  the call of fwide(); a value less than zero if
  byte-oriented, a value greater than zero if wide-oriented, and zero if the
  stream has no orientation.
fwide() function conforms to
  ISO/IEC 9899:1999 (“ISO C99”).
| October 24, 2001 | NetBSD 10.0 |