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 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include "lint.h"
30 #include <sys/types.h>
31 #include "libc.h"
32
33 unsigned
__dtou(double d)34 __dtou(double d)
35 {
36 /* Convert double to unsigned. */
37
38 int id;
39
40 /*
41 * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN
42 * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of
43 * converting 2**31 <= d < 2**32 is unknown, adjust d before the
44 * conversion.
45 */
46
47 if (d >= 2147483648.0)
48 id = 0x80000000 | (int)(d - 2147483648.0);
49 else
50 id = (int)d;
51 return ((unsigned)id);
52 }
53
54 unsigned
__ftou(float d)55 __ftou(float d)
56 {
57 /* Convert float to unsigned. */
58
59 int id;
60 /*
61 * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN
62 * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of
63 * converting 2**31 <= d < 2**32 is unknown, adjust d before the
64 * conversion.
65 */
66
67 if (d >= 2147483648.0)
68 id = 0x80000000 | (int)(d - 2147483648.0);
69 else
70 id = (int)d;
71 return ((unsigned)id);
72 }
73