[unix-history] / usr / src / include / stdarg.h

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)stdarg.h	5.4 (Berkeley) %G%
 */

typedef char *va_list;

#define	va_arg(ap, type) \
	((type *)(ap += sizeof(type) < sizeof(int) ? \
		(abort(), 0) : sizeof(type)))[-1]

#define	va_end(ap)

#define	__va_promote(type) \
	(((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))

#define	va_start(ap, last) \
	(ap = ((char *)&(last) + __va_promote(last)))
Commit	Line	Data
c98fe9aa KB	1	/*-
	2	* Copyright (c) 1990 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*
b0a33fea	7	* @(#)stdarg.h 5.4 (Berkeley) %G%
c98fe9aa KB	8	*/
	9
	10	typedef char *va_list;
	11
c98fe9aa	12	#define va_arg(ap, type) \
0f72c2ef	13	((type *)(ap += sizeof(type) < sizeof(int) ? \
b197dab6	14	(abort(), 0) : sizeof(type)))[-1]
0f72c2ef	15
c98fe9aa	16	#define va_end(ap)
0f72c2ef KB	17
	18	#define __va_promote(type) \
	19	(((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
	20
c98fe9aa	21	#define va_start(ap, last) \
0f72c2ef	22	(ap = ((char *)&(last) + __va_promote(last)))