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
__dtou(double d)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
__ftou(float d)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