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/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
*/
#include "_stdio.h"
/* TODO: According to SUSv3 should return EBADF if invalid stream. */
int fwide(register FILE *stream, int mode)
{
__STDIO_AUTO_THREADLOCK_VAR;
__STDIO_AUTO_THREADLOCK(stream);
__STDIO_STREAM_VALIDATE(stream);
if (mode && !(stream->__modeflags & (__FLAG_WIDE|__FLAG_NARROW))) {
stream->__modeflags |= ((mode > 0) ? __FLAG_WIDE : __FLAG_NARROW);
}
mode = (stream->__modeflags & __FLAG_WIDE)
- (stream->__modeflags & __FLAG_NARROW);
assert((stream->__modeflags & (__FLAG_WIDE|__FLAG_NARROW))
!= (__FLAG_WIDE|__FLAG_NARROW));
__STDIO_AUTO_THREADUNLOCK(stream);
return mode;
}
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