/*-
 * Copyright (c) 1983 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)struct.h	5.2 (Berkeley) 04/03/91
 */

#ifndef _STRUCT_H_
#define	_STRUCT_H_

/* Offset of the field in the structure. */
#define	fldoff(name, field) \
	((int)&(((struct name *)0)->field))

/* Size of the field in the structure. */
#define	fldsiz(name, field) \
	(sizeof(((struct name *)0)->field))

/* Address of the structure from a field. */
#define	strbase(name, addr, field) \
	((struct name *)((char *)(addr) - fldoff(name, field)))

#endif /* !_STRUCT_H_ */