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)
33 * Invert the sign ALWAYS to prevent an endless recursion on
39 if (xc == IEEE754_CLASS_SNAN) {
40 union ieee754dp y = ieee754dp_indef();
41 ieee754_setcx(IEEE754_INVALID_OPERATION);
42 DPSIGN(y) = DPSIGN(x);
43 return ieee754dp_nanxcpt(y);
49 union ieee754dp ieee754dp_abs(union ieee754dp x)
57 /* Clear sign ALWAYS, irrespective of NaN */
60 if (xc == IEEE754_CLASS_SNAN) {
61 ieee754_setcx(IEEE754_INVALID_OPERATION);
62 return ieee754dp_nanxcpt(ieee754dp_indef());