1 /* IEEE754 floating point arithmetic
2 * double precision: common utilities
5 * MIPS floating point support
6 * Copyright (C) 1994-2000 Algorithmics Ltd.
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.
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
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.
22 #include "ieee754dp.h"
24 union ieee754dp ieee754dp_neg(union ieee754dp x)
28 if (ieee754_csr.abs2008) {
30 DPSIGN(y) = !DPSIGN(x);
34 oldrm = ieee754_csr.rm;
35 ieee754_csr.rm = FPU_CSR_RD;
36 y = ieee754dp_sub(ieee754dp_zero(0), x);
37 ieee754_csr.rm = oldrm;
42 union ieee754dp ieee754dp_abs(union ieee754dp x)
46 if (ieee754_csr.abs2008) {
52 oldrm = ieee754_csr.rm;
53 ieee754_csr.rm = FPU_CSR_RD;
55 y = ieee754dp_sub(ieee754dp_zero(0), x);
57 y = ieee754dp_add(ieee754dp_zero(0), x);
58 ieee754_csr.rm = oldrm;