xref: /illumos-gate/usr/src/lib/libm/common/m9x/feprec.c (revision ddc0e0b5)
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 2011 Nexenta Systems, Inc.  All rights reserved.
24  */
25 /*
26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
27  * Use is subject to license terms.
28  */
29 
30 #pragma weak __fegetprec = fegetprec
31 #pragma weak __fesetprec = fesetprec
32 
33 #include <fenv.h>
34 #include <ucontext.h>
35 #include <thread.h>
36 #include "fex_handler.h"
37 
fegetprec(void)38 int fegetprec(void)
39 {
40 	unsigned long	fsr;
41 
42 	__fenv_getfsr(&fsr);
43 	return __fenv_get_rp(fsr);
44 }
45 
fesetprec(int r)46 int fesetprec(int r)
47 {
48 	unsigned long	fsr;
49 
50 	if (r != FE_FLTPREC && r != FE_DBLPREC && r != FE_LDBLPREC)
51 		return 0;
52 	__fenv_getfsr(&fsr);
53 	__fenv_set_rp(fsr, r);
54 	__fenv_setfsr(&fsr);
55 	return 1;
56 }
57