1 /* IEEE754 floating point arithmetic
2 * double precision: common utilities
5 * MIPS floating point support
6 * Copyright (C) 1994-2000 Algorithmics Ltd.
7 * http://www.algor.co.uk
9 * ########################################################################
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
24 * ########################################################################
28 #include "ieee754dp.h"
30 int ieee754dp_finite(ieee754dp x)
32 return DPBEXP(x) != DP_EMAX + 1 + DP_EBIAS;
35 ieee754dp ieee754dp_copysign(ieee754dp x, ieee754dp y)
38 DPSIGN(x) = DPSIGN(y);
43 ieee754dp ieee754dp_neg(ieee754dp x)
51 if (xc == IEEE754_CLASS_SNAN) {
52 SETCX(IEEE754_INVALID_OPERATION);
53 return ieee754dp_nanxcpt(ieee754dp_indef(), "neg");
56 if (ieee754dp_isnan(x)) /* but not infinity */
57 return ieee754dp_nanxcpt(x, "neg", x);
65 ieee754dp ieee754dp_abs(ieee754dp x)
73 if (xc == IEEE754_CLASS_SNAN) {
74 SETCX(IEEE754_INVALID_OPERATION);
75 return ieee754dp_nanxcpt(ieee754dp_indef(), "neg");
78 if (ieee754dp_isnan(x)) /* but not infinity */
79 return ieee754dp_nanxcpt(x, "abs", x);