/* 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; }