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 38 float 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 */ 46 ulong_t 47 #endif 48 expand(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