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 #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate /* 30*7c478bd9Sstevel@tonic-gate * __ftoul(x) converts float x to unsigned long. 31*7c478bd9Sstevel@tonic-gate */ 32*7c478bd9Sstevel@tonic-gate unsigned long __ftoul(float x)33*7c478bd9Sstevel@tonic-gate__ftoul(float x) 34*7c478bd9Sstevel@tonic-gate { 35*7c478bd9Sstevel@tonic-gate union { 36*7c478bd9Sstevel@tonic-gate float f; 37*7c478bd9Sstevel@tonic-gate unsigned int l; 38*7c478bd9Sstevel@tonic-gate } u; 39*7c478bd9Sstevel@tonic-gate 40*7c478bd9Sstevel@tonic-gate u.f = x; 41*7c478bd9Sstevel@tonic-gate 42*7c478bd9Sstevel@tonic-gate /* handle cases for which float->unsigned long differs from */ 43*7c478bd9Sstevel@tonic-gate /* float->signed long */ 44*7c478bd9Sstevel@tonic-gate if ((u.l >> 23) == 0xbe) { 45*7c478bd9Sstevel@tonic-gate /* 2^63 <= x < 2^64 */ 46*7c478bd9Sstevel@tonic-gate return (0x8000000000000000ul | ((long)u.l << 40)); 47*7c478bd9Sstevel@tonic-gate } 48*7c478bd9Sstevel@tonic-gate 49*7c478bd9Sstevel@tonic-gate /* for all other cases, just convert to signed long */ 50*7c478bd9Sstevel@tonic-gate return ((long)x); 51*7c478bd9Sstevel@tonic-gate } 52