1/* IEEE754 floating point arithmetic
2 * double precision: common utilities
3 */
4/*
5 * MIPS floating point support
6 * Copyright (C) 1994-2000 Algorithmics Ltd.
7 *
8 *  This program is free software; you can distribute it and/or modify it
9 *  under the terms of the GNU General Public License (Version 2) as
10 *  published by the Free Software Foundation.
11 *
12 *  This program is distributed in the hope it will be useful, but WITHOUT
13 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15 *  for more details.
16 *
17 *  You should have received a copy of the GNU General Public License along
18 *  with this program; if not, write to the Free Software Foundation, Inc.,
19 *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
20 */
21
22#include "ieee754dp.h"
23
24union ieee754dp ieee754dp_neg(union ieee754dp x)
25{
26	unsigned int oldrm;
27	union ieee754dp y;
28
29	oldrm = ieee754_csr.rm;
30	ieee754_csr.rm = FPU_CSR_RD;
31	y = ieee754dp_sub(ieee754dp_zero(0), x);
32	ieee754_csr.rm = oldrm;
33	return y;
34}
35
36union ieee754dp ieee754dp_abs(union ieee754dp x)
37{
38	unsigned int oldrm;
39	union ieee754dp y;
40
41	oldrm = ieee754_csr.rm;
42	ieee754_csr.rm = FPU_CSR_RD;
43	if (DPSIGN(x))
44		y = ieee754dp_sub(ieee754dp_zero(0), x);
45	else
46		y = ieee754dp_add(ieee754dp_zero(0), x);
47	ieee754_csr.rm = oldrm;
48	return y;
49}
50