1// SPDX-License-Identifier: GPL-2.0-only
 2/* IEEE754 floating point arithmetic
 3 * double precision: common utilities
 4 */
 5/*
 6 * MIPS floating point support
 7 * Copyright (C) 1994-2000 Algorithmics Ltd.
 
 
 
 
 
 
 
 
 
 
 
 
 
 8 */
 9
10#include "ieee754dp.h"
11
12int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
13{
14	s64 vx;
15	s64 vy;
16
17	COMPXDP;
18	COMPYDP;
19
20	EXPLODEXDP;
21	EXPLODEYDP;
22	FLUSHXDP;
23	FLUSHYDP;
24	ieee754_clearcx();	/* Even clear inexact flag here */
25
26	if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) {
27		if (sig ||
28		    xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
29			ieee754_setcx(IEEE754_INVALID_OPERATION);
30		return (cmp & IEEE754_CUN) != 0;
31	} else {
32		vx = x.bits;
33		vy = y.bits;
34
35		if (vx < 0)
36			vx = -vx ^ DP_SIGN_BIT;
37		if (vy < 0)
38			vy = -vy ^ DP_SIGN_BIT;
39
40		if (vx < vy)
41			return (cmp & IEEE754_CLT) != 0;
42		else if (vx == vy)
43			return (cmp & IEEE754_CEQ) != 0;
44		else
45			return (cmp & IEEE754_CGT) != 0;
46	}
47}

 
 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
24int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
25{
26	s64 vx;
27	s64 vy;
28
29	COMPXDP;
30	COMPYDP;
31
32	EXPLODEXDP;
33	EXPLODEYDP;
34	FLUSHXDP;
35	FLUSHYDP;
36	ieee754_clearcx();	/* Even clear inexact flag here */
37
38	if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) {
39		if (sig ||
40		    xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
41			ieee754_setcx(IEEE754_INVALID_OPERATION);
42		return (cmp & IEEE754_CUN) != 0;
43	} else {
44		vx = x.bits;
45		vy = y.bits;
46
47		if (vx < 0)
48			vx = -vx ^ DP_SIGN_BIT;
49		if (vy < 0)
50			vy = -vy ^ DP_SIGN_BIT;
51
52		if (vx < vy)
53			return (cmp & IEEE754_CLT) != 0;
54		else if (vx == vy)
55			return (cmp & IEEE754_CEQ) != 0;
56		else
57			return (cmp & IEEE754_CGT) != 0;
58	}
59}