10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
280Sstevel@tonic-gate
29*6812Sraf #include "lint.h"
300Sstevel@tonic-gate #include <sys/types.h>
310Sstevel@tonic-gate #include "libc.h"
320Sstevel@tonic-gate
330Sstevel@tonic-gate unsigned
__dtou(double d)340Sstevel@tonic-gate __dtou(double d)
350Sstevel@tonic-gate {
360Sstevel@tonic-gate /* Convert double to unsigned. */
370Sstevel@tonic-gate
380Sstevel@tonic-gate int id;
390Sstevel@tonic-gate
400Sstevel@tonic-gate /*
410Sstevel@tonic-gate * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN
420Sstevel@tonic-gate * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of
430Sstevel@tonic-gate * converting 2**31 <= d < 2**32 is unknown, adjust d before the
440Sstevel@tonic-gate * conversion.
450Sstevel@tonic-gate */
460Sstevel@tonic-gate
470Sstevel@tonic-gate if (d >= 2147483648.0)
480Sstevel@tonic-gate id = 0x80000000 | (int)(d - 2147483648.0);
490Sstevel@tonic-gate else
500Sstevel@tonic-gate id = (int)d;
510Sstevel@tonic-gate return ((unsigned)id);
520Sstevel@tonic-gate }
530Sstevel@tonic-gate
540Sstevel@tonic-gate unsigned
__ftou(float d)550Sstevel@tonic-gate __ftou(float d)
560Sstevel@tonic-gate {
570Sstevel@tonic-gate /* Convert float to unsigned. */
580Sstevel@tonic-gate
590Sstevel@tonic-gate int id;
600Sstevel@tonic-gate /*
610Sstevel@tonic-gate * id = d is correct if 0 <= d < 2**31, and good enough if d is NaN
620Sstevel@tonic-gate * or d < 0 or d >= 2**32. Otherwise, since the result (int)d of
630Sstevel@tonic-gate * converting 2**31 <= d < 2**32 is unknown, adjust d before the
640Sstevel@tonic-gate * conversion.
650Sstevel@tonic-gate */
660Sstevel@tonic-gate
670Sstevel@tonic-gate if (d >= 2147483648.0)
680Sstevel@tonic-gate id = 0x80000000 | (int)(d - 2147483648.0);
690Sstevel@tonic-gate else
700Sstevel@tonic-gate id = (int)d;
710Sstevel@tonic-gate return ((unsigned)id);
720Sstevel@tonic-gate }
73