xref: /minix3/lib/libc/arch/aarch64/gen/fpgetround.c (revision 0a6a1f1d05b60e214de2f05a7310ddd1f0e590e7)
1*0a6a1f1dSLionel Sambuc /*-
2*0a6a1f1dSLionel Sambuc  * Copyright (c) 2015 The NetBSD Foundation, Inc.
3*0a6a1f1dSLionel Sambuc  * All rights reserved.
4*0a6a1f1dSLionel Sambuc  *
5*0a6a1f1dSLionel Sambuc  * This code is derived from software contributed to The NetBSD Foundation
6*0a6a1f1dSLionel Sambuc  * by Matt Thomas of 3am Software Foundry.
7*0a6a1f1dSLionel Sambuc  *
8*0a6a1f1dSLionel Sambuc  * Redistribution and use in source and binary forms, with or without
9*0a6a1f1dSLionel Sambuc  * modification, are permitted provided that the following conditions
10*0a6a1f1dSLionel Sambuc  * are met:
11*0a6a1f1dSLionel Sambuc  * 1. Redistributions of source code must retain the above copyright
12*0a6a1f1dSLionel Sambuc  *    notice, this list of conditions and the following disclaimer.
13*0a6a1f1dSLionel Sambuc  * 2. Redistributions in binary form must reproduce the above copyright
14*0a6a1f1dSLionel Sambuc  *    notice, this list of conditions and the following disclaimer in the
15*0a6a1f1dSLionel Sambuc  *    documentation and/or other materials provided with the distribution.
16*0a6a1f1dSLionel Sambuc  *
17*0a6a1f1dSLionel Sambuc  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18*0a6a1f1dSLionel Sambuc  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19*0a6a1f1dSLionel Sambuc  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20*0a6a1f1dSLionel Sambuc  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21*0a6a1f1dSLionel Sambuc  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22*0a6a1f1dSLionel Sambuc  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23*0a6a1f1dSLionel Sambuc  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24*0a6a1f1dSLionel Sambuc  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25*0a6a1f1dSLionel Sambuc  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26*0a6a1f1dSLionel Sambuc  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27*0a6a1f1dSLionel Sambuc  * POSSIBILITY OF SUCH DAMAGE.
28*0a6a1f1dSLionel Sambuc  */
29*0a6a1f1dSLionel Sambuc 
30*0a6a1f1dSLionel Sambuc #include <sys/cdefs.h>
31*0a6a1f1dSLionel Sambuc 
32*0a6a1f1dSLionel Sambuc __RCSID("$NetBSD: fpgetround.c,v 1.1 2015/07/05 22:07:09 matt Exp $");
33*0a6a1f1dSLionel Sambuc 
34*0a6a1f1dSLionel Sambuc #include <sys/param.h>
35*0a6a1f1dSLionel Sambuc #include <sys/systm.h>
36*0a6a1f1dSLionel Sambuc #include <sys/bitops.h>
37*0a6a1f1dSLionel Sambuc 
38*0a6a1f1dSLionel Sambuc #include "namespace.h"
39*0a6a1f1dSLionel Sambuc 
40*0a6a1f1dSLionel Sambuc #include <ieeefp.h>
41*0a6a1f1dSLionel Sambuc 
42*0a6a1f1dSLionel Sambuc #include <aarch64/armreg.h>
43*0a6a1f1dSLionel Sambuc 
44*0a6a1f1dSLionel Sambuc __weak_alias(fpgetround,_fpgetround);
45*0a6a1f1dSLionel Sambuc 
46*0a6a1f1dSLionel Sambuc fp_rnd_t
fpgetround(void)47*0a6a1f1dSLionel Sambuc fpgetround(void)
48*0a6a1f1dSLionel Sambuc {
49*0a6a1f1dSLionel Sambuc 	return __SHIFTOUT(reg_fpcr_read(), FPCR_RMODE);
50*0a6a1f1dSLionel Sambuc }
51