Blame src/lib/libast/stdio/fwide.c
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/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2011 AT&T Intellectual Property *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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#pragma prototyped
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#include "stdhdr.h"
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int
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fwide(Sfio_t* f, int mode)
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{
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STDIO_INT(f, "fwide", int, (Sfio_t*, int), (f, mode))
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if (mode > 0)
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{
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f->bits &= ~SF_MB;
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f->bits |= SF_WC;
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}
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else if (mode < 0)
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{
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f->bits &= ~SF_WC;
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f->bits |= SF_MB;
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}
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if (f->bits & SF_MB)
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return -1;
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if (f->bits & SF_WC)
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return 1;
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if ((f->flags & SF_SYNCED) || f->next > f->data)
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{
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f->bits |= SF_MB;
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return -1;
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}
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return 0;
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}
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