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 "base_conversion.h"
29
30/*
31 * Returns IEEE mode/status and
32 * sets up standard environment for base conversion.
33 */
34void
35__get_ieee_flags(__ieee_flags_type *b) {
36	extern void _getcw(), _getsw(), _putcw();
37	int cw;
38
39	_getcw(&cw);
40	b->mode = cw;
41	_getsw(&b->status);
42	/*
43	 * set CW to...
44	 * RC (bits 10:11)	0 == round to nearest even
45	 * PC (bits 8:9)	2 == round to double
46	 * EM (bits 0:5)	0x3f == all exception trapping masked off
47	 */
48	cw = (cw & ~0xf3f) | 0x23f;
49	_putcw(cw);
50}
51
52/*
53 * Restores previous IEEE mode/status
54 */
55void
56__set_ieee_flags(__ieee_flags_type *b) {
57	extern void _putcw(), _putsw();
58
59	_putcw(b->mode);
60	_putsw(b->status);
61}
62