/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1987 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984 AT&T */
/*        All Rights Reserved   */

#pragma ident	"%Z%%M%	%I%	%E% SMI"  /* from S5R2 1.1 */

/*LINTLIBRARY*/

#include <sys/types.h>
#include <sys/times.h>
#include <sys/param.h>	/* for HZ (clock frequency in Hz) */
#define TIMES(B)	(B.tms_utime+B.tms_stime+B.tms_cutime+B.tms_cstime)

extern long times();
static long first;

long
clock()
{
	struct tms buffer;

	if (times(&buffer) == -1L)
		return (0L);
	if (first == 0L)
		first = TIMES(buffer);
	return ((TIMES(buffer) - first) * (1000000L/HZ));
}