10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*6812Sraf * Common Development and Distribution License (the "License"). 6*6812Sraf * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 21*6812Sraf 220Sstevel@tonic-gate /* 23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 240Sstevel@tonic-gate * Use is subject to license terms. 250Sstevel@tonic-gate */ 260Sstevel@tonic-gate 270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 280Sstevel@tonic-gate 29*6812Sraf #include "lint.h" 300Sstevel@tonic-gate #include <sys/types.h> 310Sstevel@tonic-gate #include "libc.h" 320Sstevel@tonic-gate 330Sstevel@tonic-gate unsigned 340Sstevel@tonic-gate __dtou(double d) 350Sstevel@tonic-gate { 360Sstevel@tonic-gate /* Convert double to unsigned. */ 370Sstevel@tonic-gate 380Sstevel@tonic-gate int id; 390Sstevel@tonic-gate 400Sstevel@tonic-gate /* 410Sstevel@tonic-gate * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN 420Sstevel@tonic-gate * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of 430Sstevel@tonic-gate * converting 2**31 <= d < 2**32 is unknown, adjust d before the 440Sstevel@tonic-gate * conversion. 450Sstevel@tonic-gate */ 460Sstevel@tonic-gate 470Sstevel@tonic-gate if (d >= 2147483648.0) 480Sstevel@tonic-gate id = 0x80000000 | (int)(d - 2147483648.0); 490Sstevel@tonic-gate else 500Sstevel@tonic-gate id = (int)d; 510Sstevel@tonic-gate return ((unsigned)id); 520Sstevel@tonic-gate } 530Sstevel@tonic-gate 540Sstevel@tonic-gate unsigned 550Sstevel@tonic-gate __ftou(float d) 560Sstevel@tonic-gate { 570Sstevel@tonic-gate /* Convert float to unsigned. */ 580Sstevel@tonic-gate 590Sstevel@tonic-gate int id; 600Sstevel@tonic-gate /* 610Sstevel@tonic-gate * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN 620Sstevel@tonic-gate * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of 630Sstevel@tonic-gate * converting 2**31 <= d < 2**32 is unknown, adjust d before the 640Sstevel@tonic-gate * conversion. 650Sstevel@tonic-gate */ 660Sstevel@tonic-gate 670Sstevel@tonic-gate if (d >= 2147483648.0) 680Sstevel@tonic-gate id = 0x80000000 | (int)(d - 2147483648.0); 690Sstevel@tonic-gate else 700Sstevel@tonic-gate id = (int)d; 710Sstevel@tonic-gate return ((unsigned)id); 720Sstevel@tonic-gate } 73