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 #pragma ident "%Z%%M% %I% %E% SMI" 23 24 /* 25 * Copyright (c) 1987 by Sun Microsystems, Inc. 26 */ 27 28 unsigned 29 _dtou(d) 30 double d; 31 { 32 /* Convert double to unsigned. */ 33 34 int id; 35 36 /* 37 * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN 38 * or d < 0 or d >= 2**32. Otherwise, since the result (int) d of 39 * converting 2**31 <= d < 2**32 is unknown, adjust d before the 40 * conversion. 41 */ 42 43 if (d >= 2147483648.0) 44 id = 0x80000000 | (int) (d - 2147483648.0); 45 else 46 id = (int) d; 47 return (unsigned) id; 48 } 49 50 unsigned 51 _ftou(dd) 52 int dd; /* really float */ 53 { 54 /* Convert float to unsigned. */ 55 56 int id; 57 double d = (double) *((float *)(&dd)); 58 /* 59 * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN 60 * or d < 0 or d >= 2**32. Otherwise, since the result (int) d of 61 * converting 2**31 <= d < 2**32 is unknown, adjust d before the 62 * conversion. 63 */ 64 65 if (d >= 2147483648.0) 66 id = 0x80000000 | (int) (d - 2147483648.0); 67 else 68 id = (int) d; 69 return (unsigned) id; 70 } 71