1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30
31#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.7	*/
32
33#include <sys/types.h>
34#include <sys/param.h>
35#include <sys/acct.h>
36
37#ifdef uts
38float
39#else
40/*
41 * For as long as ct is of type comp_t, and comp_t is defined to be of type
42 * unsigned short, the maximum value of ct will be 2^16-1 ie 65535. Based on
43 * this input value, the maximum value that expand() can return will therefore
44 * be 4292870144. A return type of ulong_t ensures we don't overflow.
45 */
46ulong_t
47#endif
48expand(comp_t ct)
49{
50	int e;
51#ifdef uts
52	float f;
53#else
54	ulong_t f;
55#endif
56	e = (ct >> 13) & 07;
57	f = ct & 017777;
58
59	while (e-- > 0)
60#ifdef uts
61		f *= 8.0;		/* can't shift a float */
62#else
63		f <<=3;
64#endif
65
66	return f;
67}
68