/*	$NetBSD: sprite.h,v 1.1 1999/11/23 05:28:22 mrg Exp $	*/

/*
 * Copyright (c) 1988, 1989, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1989 by Berkeley Softworks
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * 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 the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
 *
 *	from: @(#)sprite.h	8.1 (Berkeley) 6/6/93
 */

/*
 * sprite.h --
 *
 * Common constants and type declarations for Sprite.
 */

#ifndef _SPRITE
#define _SPRITE


/*
 * A boolean type is defined as an integer, not an enum. This allows a
 * boolean argument to be an expression that isn't strictly 0 or 1 valued.
 */

typedef int Boolean;
#ifndef TRUE
#define TRUE	1
#endif /* TRUE */
#ifndef FALSE
#define FALSE	0
#endif /* FALSE */

/*
 * Functions that must return a status can return a ReturnStatus to
 * indicate success or type of failure.
 */

typedef int  ReturnStatus;

/*
 * The following statuses overlap with the first 2 generic statuses
 * defined in status.h:
 *
 * SUCCESS			There was no error.
 * FAILURE			There was a general error.
 */

#define	SUCCESS			0x00000000
#define	FAILURE			0x00000001


/*
 * A nil pointer must be something that will cause an exception if
 * referenced.  There are two nils: the kernels nil and the nil used
 * by user processes.
 */

#define NIL 		~0
#define USER_NIL 	0
#ifndef NULL
#define NULL	 	0
#endif /* NULL */

/*
 * An address is just a pointer in C.  It is defined as a character pointer
 * so that address arithmetic will work properly, a byte at a time.
 */

typedef char *Address;

/*
 * ClientData is an uninterpreted word.  It is defined as an int so that
 * kdbx will not interpret client data as a string.  Unlike an "Address",
 * client data will generally not be used in arithmetic.
 * But we don't have kdbx anymore so we define it as void (christos)
 */

typedef void *ClientData;

#endif /* _SPRITE */
