1 /* ieee754 floating point arithmetic
2 * single and double precision
6 * doesn't generate IEEE754_INEXACT
10 * MIPS floating point support
11 * Copyright (C) 1994-2000 Algorithmics Ltd.
13 * ########################################################################
15 * This program is free software; you can distribute it and/or modify it
16 * under the terms of the GNU General Public License (Version 2) as
17 * published by the Free Software Foundation.
19 * This program is distributed in the hope it will be useful, but WITHOUT
20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
28 * ########################################################################
32 #include <linux/compiler.h>
34 #include "ieee754int.h"
35 #include "ieee754sp.h"
36 #include "ieee754dp.h"
42 #define SPSTR(s, b, m) {s, b, m}
43 #define DPSTR(s, b, mh, ml) {s, b, mh, ml}
44 #elif defined(__MIPSEL__)
45 #define SPSTR(s, b, m) {m, b, s}
46 #define DPSTR(s, b, mh, ml) {ml, mh, b, s}
47 #else /* !defined (__MIPSEB__) && !defined (__MIPSEL__) */
48 #error "MIPS but neither __MIPSEB__ nor __MIPSEL__?"
51 const struct ieee754dp_const __ieee754dp_spcvals[] = {
52 DPSTR(0, DP_EMIN - 1 + DP_EBIAS, 0, 0), /* + zero */
53 DPSTR(1, DP_EMIN - 1 + DP_EBIAS, 0, 0), /* - zero */
54 DPSTR(0, DP_EBIAS, 0, 0), /* + 1.0 */
55 DPSTR(1, DP_EBIAS, 0, 0), /* - 1.0 */
56 DPSTR(0, 3 + DP_EBIAS, 0x40000, 0), /* + 10.0 */
57 DPSTR(1, 3 + DP_EBIAS, 0x40000, 0), /* - 10.0 */
58 DPSTR(0, DP_EMAX + 1 + DP_EBIAS, 0, 0), /* + infinity */
59 DPSTR(1, DP_EMAX + 1 + DP_EBIAS, 0, 0), /* - infinity */
60 DPSTR(0, DP_EMAX+1+DP_EBIAS, 0x7FFFF, 0xFFFFFFFF), /* + indef quiet Nan */
61 DPSTR(0, DP_EMAX + DP_EBIAS, 0xFFFFF, 0xFFFFFFFF), /* + max */
62 DPSTR(1, DP_EMAX + DP_EBIAS, 0xFFFFF, 0xFFFFFFFF), /* - max */
63 DPSTR(0, DP_EMIN + DP_EBIAS, 0, 0), /* + min normal */
64 DPSTR(1, DP_EMIN + DP_EBIAS, 0, 0), /* - min normal */
65 DPSTR(0, DP_EMIN - 1 + DP_EBIAS, 0, 1), /* + min denormal */
66 DPSTR(1, DP_EMIN - 1 + DP_EBIAS, 0, 1), /* - min denormal */
67 DPSTR(0, 31 + DP_EBIAS, 0, 0), /* + 1.0e31 */
68 DPSTR(0, 63 + DP_EBIAS, 0, 0), /* + 1.0e63 */
71 const struct ieee754sp_const __ieee754sp_spcvals[] = {
72 SPSTR(0, SP_EMIN - 1 + SP_EBIAS, 0), /* + zero */
73 SPSTR(1, SP_EMIN - 1 + SP_EBIAS, 0), /* - zero */
74 SPSTR(0, SP_EBIAS, 0), /* + 1.0 */
75 SPSTR(1, SP_EBIAS, 0), /* - 1.0 */
76 SPSTR(0, 3 + SP_EBIAS, 0x200000), /* + 10.0 */
77 SPSTR(1, 3 + SP_EBIAS, 0x200000), /* - 10.0 */
78 SPSTR(0, SP_EMAX + 1 + SP_EBIAS, 0), /* + infinity */
79 SPSTR(1, SP_EMAX + 1 + SP_EBIAS, 0), /* - infinity */
80 SPSTR(0, SP_EMAX+1+SP_EBIAS, 0x3FFFFF), /* + indef quiet Nan */
81 SPSTR(0, SP_EMAX + SP_EBIAS, 0x7FFFFF), /* + max normal */
82 SPSTR(1, SP_EMAX + SP_EBIAS, 0x7FFFFF), /* - max normal */
83 SPSTR(0, SP_EMIN + SP_EBIAS, 0), /* + min normal */
84 SPSTR(1, SP_EMIN + SP_EBIAS, 0), /* - min normal */
85 SPSTR(0, SP_EMIN - 1 + SP_EBIAS, 1), /* + min denormal */
86 SPSTR(1, SP_EMIN - 1 + SP_EBIAS, 1), /* - min denormal */
87 SPSTR(0, 31 + SP_EBIAS, 0), /* + 1.0e31 */
88 SPSTR(0, 63 + SP_EBIAS, 0), /* + 1.0e63 */
92 int __cold ieee754si_xcpt(int r, const char *op, ...)
94 struct ieee754xctx ax;
99 ax.rt = IEEE754_RT_SI;
107 s64 __cold ieee754di_xcpt(s64 r, const char *op, ...)
109 struct ieee754xctx ax;
114 ax.rt = IEEE754_RT_DI;