1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright (c) 1994-1997, by Sun Microsystems, Inc. 24*7c478bd9Sstevel@tonic-gate * All rights reserved. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate /* 28*7c478bd9Sstevel@tonic-gate * __dtoul(x) converts double x to unsigned long. 29*7c478bd9Sstevel@tonic-gate */ 30*7c478bd9Sstevel@tonic-gate unsigned long __dtoul(double x)31*7c478bd9Sstevel@tonic-gate__dtoul(double x) 32*7c478bd9Sstevel@tonic-gate { 33*7c478bd9Sstevel@tonic-gate union { 34*7c478bd9Sstevel@tonic-gate double d; 35*7c478bd9Sstevel@tonic-gate unsigned long l; 36*7c478bd9Sstevel@tonic-gate } u; 37*7c478bd9Sstevel@tonic-gate 38*7c478bd9Sstevel@tonic-gate u.d = x; 39*7c478bd9Sstevel@tonic-gate 40*7c478bd9Sstevel@tonic-gate /* handle cases for which double->unsigned long differs from */ 41*7c478bd9Sstevel@tonic-gate /* double->signed long */ 42*7c478bd9Sstevel@tonic-gate if ((u.l >> 52) == 0x43e) { 43*7c478bd9Sstevel@tonic-gate /* 2^63 <= x < 2^64 */ 44*7c478bd9Sstevel@tonic-gate return (0x8000000000000000ul | (u.l << 11)); 45*7c478bd9Sstevel@tonic-gate } 46*7c478bd9Sstevel@tonic-gate 47*7c478bd9Sstevel@tonic-gate /* for all other cases, just convert to signed long */ 48*7c478bd9Sstevel@tonic-gate return ((long)x); 49*7c478bd9Sstevel@tonic-gate } 50