int
fwide(FILE *stream, int mode)
)
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.
)
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.
)
function
conforms to
ISO/IEC 9899:1999 (``ISO C99'') .