1/* IEEE754 floating point arithmetic
 2 * single precision
 3 */
 4/*
 5 * MIPS floating point support
 6 * Copyright (C) 1994-2000 Algorithmics Ltd.
 7 *
 8 * ########################################################################
 9 *
10 *  This program is free software; you can distribute it and/or modify it
11 *  under the terms of the GNU General Public License (Version 2) as
12 *  published by the Free Software Foundation.
13 *
14 *  This program is distributed in the hope it will be useful, but WITHOUT
15 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
17 *  for more details.
18 *
19 *  You should have received a copy of the GNU General Public License along
20 *  with this program; if not, write to the Free Software Foundation, Inc.,
21 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * ########################################################################
24 */
25
26
27#include "ieee754sp.h"
28
29int ieee754sp_cmp(ieee754sp x, ieee754sp y, int cmp, int sig)
30{
 
 
 
31	COMPXSP;
32	COMPYSP;
33
34	EXPLODEXSP;
35	EXPLODEYSP;
36	FLUSHXSP;
37	FLUSHYSP;
38	CLEARCX;	/* Even clear inexact flag here */
39
40	if (ieee754sp_isnan(x) || ieee754sp_isnan(y)) {
41		if (sig || xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
42			SETCX(IEEE754_INVALID_OPERATION);
43		if (cmp & IEEE754_CUN)
44			return 1;
45		if (cmp & (IEEE754_CLT | IEEE754_CGT)) {
46			if (sig && SETANDTESTCX(IEEE754_INVALID_OPERATION))
47				return ieee754si_xcpt(0, "fcmpf", x);
48		}
49		return 0;
50	} else {
51		int vx = x.bits;
52		int vy = y.bits;
53
54		if (vx < 0)
55			vx = -vx ^ SP_SIGN_BIT;
56		if (vy < 0)
57			vy = -vy ^ SP_SIGN_BIT;
58
59		if (vx < vy)
60			return (cmp & IEEE754_CLT) != 0;
61		else if (vx == vy)
62			return (cmp & IEEE754_CEQ) != 0;
63		else
64			return (cmp & IEEE754_CGT) != 0;
65	}
66}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/* IEEE754 floating point arithmetic
 3 * single precision
 4 */
 5/*
 6 * MIPS floating point support
 7 * Copyright (C) 1994-2000 Algorithmics Ltd.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8 */
 9
 
10#include "ieee754sp.h"
11
12int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
13{
14	int vx;
15	int vy;
16
17	COMPXSP;
18	COMPYSP;
19
20	EXPLODEXSP;
21	EXPLODEYSP;
22	FLUSHXSP;
23	FLUSHYSP;
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 ^ SP_SIGN_BIT;
37		if (vy < 0)
38			vy = -vy ^ SP_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}