Commit | Line | Data |
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1da177e4 LT |
1 | /* ieee754 floating point arithmetic |
2 | * single and double precision | |
3 | * | |
4 | * BUGS | |
5 | * not much dp done | |
6 | * doesn't generate IEEE754_INEXACT | |
7 | * | |
8 | */ | |
9 | /* | |
10 | * MIPS floating point support | |
11 | * Copyright (C) 1994-2000 Algorithmics Ltd. | |
1da177e4 | 12 | * |
1da177e4 LT |
13 | * This program is free software; you can distribute it and/or modify it |
14 | * under the terms of the GNU General Public License (Version 2) as | |
15 | * published by the Free Software Foundation. | |
16 | * | |
17 | * This program is distributed in the hope it will be useful, but WITHOUT | |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License along | |
23 | * with this program; if not, write to the Free Software Foundation, Inc., | |
3f7cac41 | 24 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
1da177e4 LT |
25 | */ |
26 | ||
cae55066 | 27 | #include <linux/compiler.h> |
1da177e4 | 28 | |
49548b09 | 29 | #include "ieee754.h" |
efec3c4e RB |
30 | #include "ieee754sp.h" |
31 | #include "ieee754dp.h" | |
1da177e4 | 32 | |
3f7cac41 RB |
33 | /* |
34 | * Special constants | |
35 | */ | |
1da177e4 | 36 | |
91496ea9 RB |
37 | /* |
38 | * Older GCC requires the inner braces for initialization of union ieee754dp's | |
39 | * anonymous struct member. Without an error will result. | |
40 | */ | |
fb738f85 | 41 | #define xPCNST(s, b, m, ebias) \ |
90efba36 | 42 | { \ |
91496ea9 RB |
43 | { \ |
44 | .sign = (s), \ | |
fb738f85 | 45 | .bexp = (b) + ebias, \ |
91496ea9 RB |
46 | .mant = (m) \ |
47 | } \ | |
90efba36 | 48 | } |
1da177e4 | 49 | |
fb738f85 RB |
50 | #define DPCNST(s, b, m) \ |
51 | xPCNST(s, b, m, DP_EBIAS) | |
52 | ||
49548b09 RB |
53 | const union ieee754dp __ieee754dp_spcvals[] = { |
54 | DPCNST(0, DP_EMIN - 1, 0x0000000000000ULL), /* + zero */ | |
55 | DPCNST(1, DP_EMIN - 1, 0x0000000000000ULL), /* - zero */ | |
56 | DPCNST(0, 0, 0x0000000000000ULL), /* + 1.0 */ | |
57 | DPCNST(1, 0, 0x0000000000000ULL), /* - 1.0 */ | |
58 | DPCNST(0, 3, 0x4000000000000ULL), /* + 10.0 */ | |
59 | DPCNST(1, 3, 0x4000000000000ULL), /* - 10.0 */ | |
60 | DPCNST(0, DP_EMAX + 1, 0x0000000000000ULL), /* + infinity */ | |
61 | DPCNST(1, DP_EMAX + 1, 0x0000000000000ULL), /* - infinity */ | |
90d53a91 MR |
62 | DPCNST(0, DP_EMAX + 1, 0x7FFFFFFFFFFFFULL), /* + ind legacy qNaN */ |
63 | DPCNST(0, DP_EMAX + 1, 0x8000000000000ULL), /* + indef 2008 qNaN */ | |
49548b09 RB |
64 | DPCNST(0, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* + max */ |
65 | DPCNST(1, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* - max */ | |
66 | DPCNST(0, DP_EMIN, 0x0000000000000ULL), /* + min normal */ | |
67 | DPCNST(1, DP_EMIN, 0x0000000000000ULL), /* - min normal */ | |
68 | DPCNST(0, DP_EMIN - 1, 0x0000000000001ULL), /* + min denormal */ | |
69 | DPCNST(1, DP_EMIN - 1, 0x0000000000001ULL), /* - min denormal */ | |
70 | DPCNST(0, 31, 0x0000000000000ULL), /* + 1.0e31 */ | |
71 | DPCNST(0, 63, 0x0000000000000ULL), /* + 1.0e63 */ | |
1da177e4 LT |
72 | }; |
73 | ||
49548b09 | 74 | #define SPCNST(s, b, m) \ |
fb738f85 | 75 | xPCNST(s, b, m, SP_EBIAS) |
90efba36 | 76 | |
49548b09 RB |
77 | const union ieee754sp __ieee754sp_spcvals[] = { |
78 | SPCNST(0, SP_EMIN - 1, 0x000000), /* + zero */ | |
79 | SPCNST(1, SP_EMIN - 1, 0x000000), /* - zero */ | |
80 | SPCNST(0, 0, 0x000000), /* + 1.0 */ | |
81 | SPCNST(1, 0, 0x000000), /* - 1.0 */ | |
82 | SPCNST(0, 3, 0x200000), /* + 10.0 */ | |
83 | SPCNST(1, 3, 0x200000), /* - 10.0 */ | |
84 | SPCNST(0, SP_EMAX + 1, 0x000000), /* + infinity */ | |
85 | SPCNST(1, SP_EMAX + 1, 0x000000), /* - infinity */ | |
90d53a91 MR |
86 | SPCNST(0, SP_EMAX + 1, 0x3FFFFF), /* + indef legacy quiet NaN */ |
87 | SPCNST(0, SP_EMAX + 1, 0x400000), /* + indef 2008 quiet NaN */ | |
49548b09 RB |
88 | SPCNST(0, SP_EMAX, 0x7FFFFF), /* + max normal */ |
89 | SPCNST(1, SP_EMAX, 0x7FFFFF), /* - max normal */ | |
90 | SPCNST(0, SP_EMIN, 0x000000), /* + min normal */ | |
91 | SPCNST(1, SP_EMIN, 0x000000), /* - min normal */ | |
92 | SPCNST(0, SP_EMIN - 1, 0x000001), /* + min denormal */ | |
93 | SPCNST(1, SP_EMIN - 1, 0x000001), /* - min denormal */ | |
94 | SPCNST(0, 31, 0x000000), /* + 1.0e31 */ | |
95 | SPCNST(0, 63, 0x000000), /* + 1.0e63 */ | |
1da177e4 | 96 | }; |