Source to bsd/include/c.h


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/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @[email protected]
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @[email protected]
 */

/*
 * Standard C macros
 *
 **********************************************************************
 * HISTORY
 * 02-Feb-86  Glenn Marcy (gm0w) at Carnegie-Mellon University
 *	Added check to allow multiple or recursive inclusion of this
 *	file.  Added bool enum from machine/types.h for regular users
 *	that want a real boolean type.
 *
 * 29-Dec-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
 *	Also change spacing of MAX and MIN to coincide with that of
 *	sys/param.h.
 *
 * 19-Nov-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
 *	Changed the number of tabs between TRUE, FALSE and their
 *	respective values to match those in sys/types.h.
 *
 * 17-Dec-84  Glenn Marcy (gm0w) at Carnegie-Mellon University
 *	Only define TRUE and FALSE if not defined.  Added caseE macro
 *	for using enumerated types in switch statements.
 *
 * 23-Apr-81  Mike Accetta (mja) at Carnegie-Mellon University
 *	Added "sizeofS" and "sizeofA" macros which expand to the size
 *	of a string constant and array respectively.
 *
 **********************************************************************
 */

#ifndef	_C_INCLUDE_
#define	_C_INCLUDE_

#ifndef ABS
#define ABS(x) ((x)>=0?(x):-(x))
#endif /* ABS */
#ifndef MIN
#define	MIN(a,b) (((a)<(b))?(a):(b))
#endif /* MIN */
#ifndef MAX
#define	MAX(a,b) (((a)>(b))?(a):(b))
#endif /* MAX */

#ifndef	FALSE
#define FALSE	0
#endif	/* FALSE */
#ifndef	TRUE
#define TRUE	1
#endif	/* TRUE */

#define	CERROR		(-1)

#ifndef	bool
typedef enum	{ false = 0, true = 1 } bool;
#endif	/* bool */

#define	sizeofS(string)	(sizeof(string) - 1)
#define sizeofA(array)	(sizeof(array)/sizeof(array[0]))

#define caseE(enum_type)	case (int)(enum_type)

#endif	/* _C_INCLUDE_ */