1/*
 2 * IEEE754 floating point arithmetic
 3 * single precision: CLASS.f
 4 * FPR[fd] = class(FPR[fs])
 5 *
 6 * MIPS floating point support
 7 * Copyright (C) 2015 Imagination Technologies, Ltd.
 8 * Author: Markos Chandras <markos.chandras@imgtec.com>
 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 as published by the
12 *  Free Software Foundation; version 2 of the License.
13 */
14
15#include "ieee754sp.h"
16
17int ieee754sp_2008class(union ieee754sp x)
18{
19	COMPXSP;
20
21	EXPLODEXSP;
22
23	/*
24	 * 10 bit mask as follows:
25	 *
26	 * bit0 = SNAN
27	 * bit1 = QNAN
28	 * bit2 = -INF
29	 * bit3 = -NORM
30	 * bit4 = -DNORM
31	 * bit5 = -ZERO
32	 * bit6 = INF
33	 * bit7 = NORM
34	 * bit8 = DNORM
35	 * bit9 = ZERO
36	 */
37
38	switch(xc) {
39	case IEEE754_CLASS_SNAN:
40		return 0x01;
41	case IEEE754_CLASS_QNAN:
42		return 0x02;
43	case IEEE754_CLASS_INF:
44		return 0x04 << (xs ? 0 : 4);
45	case IEEE754_CLASS_NORM:
46		return 0x08 << (xs ? 0 : 4);
47	case IEEE754_CLASS_DNORM:
48		return 0x10 << (xs ? 0 : 4);
49	case IEEE754_CLASS_ZERO:
50		return 0x20 << (xs ? 0 : 4);
51	default:
52		pr_err("Unknown class: %d\n", xc);
53		return 0;
54	}
55}

 1/*
 2 * IEEE754 floating point arithmetic
 3 * single precision: CLASS.f
 4 * FPR[fd] = class(FPR[fs])
 5 *
 6 * MIPS floating point support
 7 * Copyright (C) 2015 Imagination Technologies, Ltd.
 8 * Author: Markos Chandras <markos.chandras@imgtec.com>
 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 as published by the
12 *  Free Software Foundation; version 2 of the License.
13 */
14
15#include "ieee754sp.h"
16
17int ieee754sp_2008class(union ieee754sp x)
18{
19	COMPXSP;
20
21	EXPLODEXSP;
22
23	/*
24	 * 10 bit mask as follows:
25	 *
26	 * bit0 = SNAN
27	 * bit1 = QNAN
28	 * bit2 = -INF
29	 * bit3 = -NORM
30	 * bit4 = -DNORM
31	 * bit5 = -ZERO
32	 * bit6 = INF
33	 * bit7 = NORM
34	 * bit8 = DNORM
35	 * bit9 = ZERO
36	 */
37
38	switch(xc) {
39	case IEEE754_CLASS_SNAN:
40		return 0x01;
41	case IEEE754_CLASS_QNAN:
42		return 0x02;
43	case IEEE754_CLASS_INF:
44		return 0x04 << (xs ? 0 : 4);
45	case IEEE754_CLASS_NORM:
46		return 0x08 << (xs ? 0 : 4);
47	case IEEE754_CLASS_DNORM:
48		return 0x10 << (xs ? 0 : 4);
49	case IEEE754_CLASS_ZERO:
50		return 0x20 << (xs ? 0 : 4);
51	default:
52		pr_err("Unknown class: %d\n", xc);
53		return 0;
54	}
55}