/*
 * |-----------------------------------------------------------|
 * | Copyright (c) 1991, 1990 MIPS Computer Systems, Inc.      |
 * | All Rights Reserved                                       |
 * |-----------------------------------------------------------|
 * |          Restricted Rights Legend                         |
 * | Use, duplication, or disclosure by the Government is      |
 * | subject to restrictions as set forth in                   |
 * | subparagraph (c)(1)(ii) of the Rights in Technical        |
 * | Data and Computer Software Clause of DFARS 252.227-7013.  |
 * |         MIPS Computer Systems, Inc.                       |
 * |         950 DeGuigne Avenue                               |
 * |         Sunnyvale, California 94088-3650, USA             |
 * |-----------------------------------------------------------|
 */
/* $Header: stdiom.h,v 1.8.2.1 92/06/24 14:01:45 marker Exp $ */

/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

/* The following macros improve performance of the stdio by reducing the
	number of calls to _bufsync and _wrtchk.  _BUFSYNC has the same
	effect as _bufsync, and _WRTCHK has the same effect as _wrtchk,
	but often these functions have no effect, and in those cases the
	macros avoid the expense of calling the functions.  */

#define _BUFSYNC(iop)	if (_bufend(iop) - iop->_ptr <   \
				( iop->_cnt < 0 ? 0 : iop->_cnt ) )  \
					_bufsync(iop)
#define _WRTCHK(iop)	((((iop->_flag & (_IOWRT | _IOEOF)) != _IOWRT) \
				|| (iop->_base == NULL)  \
				|| (iop->_ptr == iop->_base && iop->_cnt == 0 \
					&& !(iop->_flag & (_IONBF | _IOLBF)))) \
			? _wrtchk(iop) : 0 )
