/* ==== util.h ============================================================
 * Copyright (c) 1991, 1992, 1993 by Chris Provenzano, proven@mit.edu	
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by Chris Provenzano.
 * 4. The name of Chris Provenzano may not be used to endorse or promote 
 *	  products derived from this software without specific prior written
 *	  permission.
 *
 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY 
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE.
 *
 * Description : Header file for generic utility functions.
 *
 * 91/08/31 proven - Added exchange.
 * Exchange any two objects of any size in any table.
 *
 * 91/10/06 proven - Cleaned out all the old junk. 
 *
 * 91/03/06 proven - Added getint. 
 */

#ifndef	NULL
#define NULL	0
#endif

#undef FALSE
#undef TRUE

typedef enum Boolean {
	FALSE,
	TRUE,
} Boolean;

#define OK					0
#define NUL					'\0'
#define NOTOK				-1

#if ! defined(min)
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))
#endif

/* Alingn the size to the next multiple of 4 bytes */
#define ALIGN4(size)	((size + 3) & ~3)
#define ALIGN8(size)	((size + 7) & ~7)

#ifdef DEBUG
#define	DEBUG0(s)		printf(s)
#define	DEBUG1(s,a)		printf(s,a)
#define	DEBUG2(s,a,b)	printf(s,a,b)
#define	DEBUG3(s,a,b,c)	printf(s,a,b,c)
#else
#define	DEBUG0(s)	
#define	DEBUG1(s)	
#define	DEBUG2(s)	
#define	DEBUG3(s)	
#endif