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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "lint.h" 28 #include <sys/types.h> 29 #include "libc.h" 30 31 unsigned 32 __dtou(double d) 33 { 34 /* Convert double to unsigned. */ 35 36 int id; 37 38 /* 39 * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN 40 * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of 41 * converting 2**31 <= d < 2**32 is unknown, adjust d before the 42 * conversion. 43 */ 44 45 if (d >= 2147483648.0) 46 id = 0x80000000 | (int)(d - 2147483648.0); 47 else 48 id = (int)d; 49 return ((unsigned)id); 50 } 51 52 unsigned 53 __ftou(float d) 54 { 55 /* Convert float to unsigned. */ 56 57 int id; 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