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
33unsigned
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
54unsigned
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