/* IEEE754 floating point arithmetic
|
* double precision: common utilities
|
*/
|
/*
|
* MIPS floating point support
|
* Copyright (C) 1994-2000 Algorithmics Ltd.
|
*
|
* This program is free software; you can distribute it and/or modify it
|
* under the terms of the GNU General Public License (Version 2) as
|
* published by the Free Software Foundation.
|
*
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
* for more details.
|
*
|
* You should have received a copy of the GNU General Public License along
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
*/
|
|
#include "ieee754dp.h"
|
|
int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
|
{
|
s64 vx;
|
s64 vy;
|
|
COMPXDP;
|
COMPYDP;
|
|
EXPLODEXDP;
|
EXPLODEYDP;
|
FLUSHXDP;
|
FLUSHYDP;
|
ieee754_clearcx(); /* Even clear inexact flag here */
|
|
if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) {
|
if (sig ||
|
xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
|
ieee754_setcx(IEEE754_INVALID_OPERATION);
|
return (cmp & IEEE754_CUN) != 0;
|
} else {
|
vx = x.bits;
|
vy = y.bits;
|
|
if (vx < 0)
|
vx = -vx ^ DP_SIGN_BIT;
|
if (vy < 0)
|
vy = -vy ^ DP_SIGN_BIT;
|
|
if (vx < vy)
|
return (cmp & IEEE754_CLT) != 0;
|
else if (vx == vy)
|
return (cmp & IEEE754_CEQ) != 0;
|
else
|
return (cmp & IEEE754_CGT) != 0;
|
}
|
}
|
