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
28unsigned
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
50unsigned
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