/*
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * $Id: md.c,v 1.1 1993/11/14 21:20:18 deraadt Exp $
 */

#ifndef lint
static char rcsid[] =
    "@(#) Header: md-hp300.c,v 1.4 90/10/25 15:24:19 mccanne Exp (LBL)";
#endif

int
clock_sigfigs()
{
#ifdef hp300
	/*
	 * The hp's apparently have a microsecond clock.
	 */
	return 6;
#endif
#ifdef pmax
	/*
	 * On DEC RISC machines, timestamps to about 4 msec so we pretend
	 * it is 1 msec.  Future kernel hacking could improve it.
	 */
	return 3;
#endif
#ifdef ibmrt
	return 3;
#endif
#ifdef sun3
	/* Stock Sun 3's have clocks accurate to 20 ms. */
	return 2;
#endif
#ifdef sparc
/* The sun includes are arranged too stupidly to help us */

#define ARCH_MASK	0xf0000000
#define MACH_MASK	0x0f000000
#define ARCH_MACH_MASK	(ARCH_MASK + MACH_MASK)

#define ARCH_SUN4	0x20000000
#define ARCH_SUN4C	0x50000000
#define MACH_60		0x01000000	/* Sparcstation 1 */

#define MACH_4_330	(ARCH_SUN4 + 0x03000000)
#define MACH_4_460	(ARCH_SUN4 + 0x04000000)

#define MACH_260	0x01000000
#define MACH_110	0x02000000
#define MACH_330	0x03000000
#define MACH_460	0x04000000

	int good = 0;
	long id = gethostid();

	/*
	 * Apparently, all sun4c's, 4/300's, and 4/400's have the
	 * Mostek 48T02 clock chip.
	 */
	if ((id & ARCH_MASK) == ARCH_SUN4C)
		++good;
	else
		switch (id & ARCH_MACH_MASK) {

		case MACH_4_330:
		case MACH_4_460:
			++good;
			break;
		}
	/* On machines with "good" clocks, timestamps to microseconds.
	   Default is hundreths of a second. */

	if (good)
		return 6;
	else 
		return 2;
#endif
#ifdef vax
	/*
	 * Vaxen appear to have clocks accurate to 1 us,
	 * but packetfilter is timestamping to 10 ms.
	 */
	return 2;
#endif

}