| 1 | /* flonum_const.c - Useful Flonum constants |
| 2 | Copyright (C) 1987-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 19 | 02110-1301, USA. */ |
| 20 | |
| 21 | #include "ansidecl.h" |
| 22 | #include "flonum.h" |
| 23 | /* JF: I added the last entry to this table, and I'm not |
| 24 | sure if its right or not. Could go either way. I wish |
| 25 | I really understood this stuff. */ |
| 26 | |
| 27 | const int table_size_of_flonum_powers_of_ten = 13; |
| 28 | |
| 29 | static const LITTLENUM_TYPE zero[] = { |
| 30 | 1 |
| 31 | }; |
| 32 | |
| 33 | /***********************************************************************\ |
| 34 | * * |
| 35 | * Warning: the low order bits may be WRONG here. * |
| 36 | * I took this from a suspect bc(1) script. * |
| 37 | * "minus_X"[] is supposed to be 10^(2^-X) expressed in base 2^16. * |
| 38 | * The radix point is just AFTER the highest element of the [] * |
| 39 | * * |
| 40 | * Because bc rounds DOWN for printing (I think), the lowest * |
| 41 | * significance littlenums should probably have 1 added to them. * |
| 42 | * * |
| 43 | \***********************************************************************/ |
| 44 | |
| 45 | /* JF: If this equals 6553/(2^16)+39321/(2^32)+... it approaches .1 */ |
| 46 | static const LITTLENUM_TYPE minus_1[] = { |
| 47 | 39322, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, |
| 48 | 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553 |
| 49 | }; |
| 50 | |
| 51 | static const LITTLENUM_TYPE plus_1[] = { |
| 52 | 10 |
| 53 | }; |
| 54 | |
| 55 | /* JF: If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */ |
| 56 | static const LITTLENUM_TYPE minus_2[] = { |
| 57 | 10486, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807, |
| 58 | 10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655 |
| 59 | }; |
| 60 | |
| 61 | static const LITTLENUM_TYPE plus_2[] = { |
| 62 | 100 |
| 63 | }; |
| 64 | |
| 65 | /* This approaches .0001 */ |
| 66 | static const LITTLENUM_TYPE minus_3[] = { |
| 67 | 52534, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503, |
| 68 | 2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6 |
| 69 | }; |
| 70 | |
| 71 | static const LITTLENUM_TYPE plus_3[] = { |
| 72 | 10000 |
| 73 | }; |
| 74 | |
| 75 | /* JF: this approaches 1e-8 */ |
| 76 | static const LITTLENUM_TYPE minus_4[] = { |
| 77 | 22517, 49501, 54293, 19424, 60699, 6716, 24348, 22618, 23904, 21327, |
| 78 | 3919, 44703, 19149, 28803, 48959, 6259, 50273, 62237, 42 |
| 79 | }; |
| 80 | |
| 81 | /* This equals 1525 * 2^16 + 57600 */ |
| 82 | static const LITTLENUM_TYPE plus_4[] = { |
| 83 | 57600, 1525 |
| 84 | }; |
| 85 | |
| 86 | /* This approaches 1e-16 */ |
| 87 | static const LITTLENUM_TYPE minus_5[] = { |
| 88 | 22199, 45957, 17005, 26266, 10526, 16260, 55017, 35680, 40443, 19789, |
| 89 | 17356, 30195, 55905, 28426, 63010, 44197, 1844 |
| 90 | }; |
| 91 | |
| 92 | static const LITTLENUM_TYPE plus_5[] = { |
| 93 | 28609, 34546, 35 |
| 94 | }; |
| 95 | |
| 96 | static const LITTLENUM_TYPE minus_6[] = { |
| 97 | 30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929, |
| 98 | 20069, 43857, 60487, 51 |
| 99 | }; |
| 100 | |
| 101 | static const LITTLENUM_TYPE plus_6[] = { |
| 102 | 61313, 34220, 16731, 11629, 1262 |
| 103 | }; |
| 104 | |
| 105 | static const LITTLENUM_TYPE minus_7[] = { |
| 106 | 29819, 14733, 21490, 40602, 31315, 65186, 2695 |
| 107 | }; |
| 108 | |
| 109 | static const LITTLENUM_TYPE plus_7[] = { |
| 110 | 7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24 |
| 111 | }; |
| 112 | |
| 113 | static const LITTLENUM_TYPE minus_8[] = { |
| 114 | 27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566, |
| 115 | 24178, 15922, 59427, 110 |
| 116 | }; |
| 117 | |
| 118 | static const LITTLENUM_TYPE plus_8[] = { |
| 119 | 15873, 11925, 39177, 991, 14589, 3861, 58415, 9076, 62956, 54223, |
| 120 | 56328, 50180, 45274, 48333, 32537, 42547, 9731, 59679, 590 |
| 121 | }; |
| 122 | |
| 123 | static const LITTLENUM_TYPE minus_9[] = { |
| 124 | 11042, 8464, 58971, 63429, 6022, 63485, 5500, 53464, 47545, 50068, |
| 125 | 56988, 22819, 49708, 54493, 9920, 47667, 40409, 35764, 10383, 54466, |
| 126 | 32702, 17493, 32420, 34382, 22750, 20681, 12300 |
| 127 | }; |
| 128 | |
| 129 | static const LITTLENUM_TYPE plus_9[] = { |
| 130 | 20678, 27614, 28272, 53066, 55311, 54677, 29038, 9906, 26288, 44486, |
| 131 | 13860, 7445, 54106, 15426, 21518, 25599, 29632, 52309, 61207, 26105, |
| 132 | 10482, 21948, 51191, 32988, 60892, 62574, 61390, 24540, 21495, 5 |
| 133 | }; |
| 134 | |
| 135 | static const LITTLENUM_TYPE minus_10[] = { |
| 136 | 6214, 48771, 23471, 30163, 31763, 38013, 57001, 11770, 18263, 36366, |
| 137 | 20742, 45086, 56969, 53231, 37856, 55814, 38057, 15692, 46761, 8713, |
| 138 | 6102, 20083, 8269, 11839, 11571, 50963, 15649, 11698, 40675, 2308 |
| 139 | }; |
| 140 | |
| 141 | static const LITTLENUM_TYPE plus_10[] = { |
| 142 | 63839, 36576, 45712, 44516, 37803, 29482, 4966, 30556, 37961, 23310, |
| 143 | 27070, 44972, 29507, 48257, 45209, 7494, 17831, 38728, 41577, 29443, |
| 144 | 36016, 7955, 35339, 35479, 36011, 14553, 49618, 5588, 25396, 28 |
| 145 | }; |
| 146 | |
| 147 | static const LITTLENUM_TYPE minus_11[] = { |
| 148 | 16663, 56882, 61983, 7804, 36555, 32060, 34502, 1000, 14356, 21681, |
| 149 | 6605, 34767, 51411, 59048, 53614, 39850, 30079, 6496, 6846, 26841, |
| 150 | 40778, 19578, 59899, 44085, 54016, 24259, 11232, 21229, 21313, 81 |
| 151 | }; |
| 152 | |
| 153 | static const LITTLENUM_TYPE plus_11[] = { |
| 154 | 92, 9054, 62707, 17993, 7821, 56838, 13992, 21321, 29637, 48426, |
| 155 | 42982, 38668, 49574, 28820, 18200, 18927, 53979, 16219, 37484, 2516, |
| 156 | 44642, 14665, 11587, 41926, 13556, 23956, 54320, 6661, 55766, 805 |
| 157 | }; |
| 158 | |
| 159 | static const LITTLENUM_TYPE minus_12[] = { |
| 160 | 33202, 45969, 58804, 56734, 16482, 26007, 44984, 49334, 31007, 32944, |
| 161 | 44517, 63329, 47131, 15291, 59465, 2264, 23218, 11829, 59771, 38798, |
| 162 | 31051, 28748, 23129, 40541, 41562, 35108, 50620, 59014, 51817, 6613 |
| 163 | }; |
| 164 | |
| 165 | static const LITTLENUM_TYPE plus_12[] = { |
| 166 | 10098, 37922, 58070, 7432, 10470, 63465, 23718, 62190, 47420, 7009, |
| 167 | 38443, 4587, 45596, 38472, 52129, 52779, 29012, 13559, 48688, 31678, |
| 168 | 41753, 58662, 10668, 36067, 29906, 56906, 21461, 46556, 59571, 9 |
| 169 | }; |
| 170 | |
| 171 | static const LITTLENUM_TYPE minus_13[] = { |
| 172 | 45309, 27592, 37144, 34637, 34328, 41671, 34620, 24135, 53401, 22112, |
| 173 | 21576, 45147, 39310, 44051, 48572, 3676, 46544, 59768, 33350, 2323, |
| 174 | 49524, 61568, 3903, 36487, 36356, 30903, 14975, 9035, 29715, 667 |
| 175 | }; |
| 176 | |
| 177 | static const LITTLENUM_TYPE plus_13[] = { |
| 178 | 18788, 16960, 6318, 45685, 55400, 46230, 35794, 25588, 7253, 55541, |
| 179 | 49716, 59760, 63592, 8191, 63765, 58530, 44667, 13294, 10001, 55586, |
| 180 | 47887, 18738, 9509, 40896, 42506, 52580, 4171, 325, 12329, 98 |
| 181 | }; |
| 182 | |
| 183 | /* Shut up complaints about differing pointer types. They only differ |
| 184 | in the const attribute, but there isn't any easy way to do this |
| 185 | */ |
| 186 | #define X (LITTLENUM_TYPE *) |
| 187 | |
| 188 | const FLONUM_TYPE flonum_negative_powers_of_ten[] = { |
| 189 | {X zero, X zero, X zero, 0, '+'}, |
| 190 | {X minus_1, X minus_1 + 19, X minus_1 + 19, -20, '+'}, |
| 191 | {X minus_2, X minus_2 + 19, X minus_2 + 19, -20, '+'}, |
| 192 | {X minus_3, X minus_3 + 19, X minus_3 + 19, -20, '+'}, |
| 193 | {X minus_4, X minus_4 + 18, X minus_4 + 18, -20, '+'}, |
| 194 | {X minus_5, X minus_5 + 16, X minus_5 + 16, -20, '+'}, |
| 195 | {X minus_6, X minus_6 + 13, X minus_6 + 13, -20, '+'}, |
| 196 | {X minus_7, X minus_7 + 6, X minus_7 + 6, -20, '+'}, |
| 197 | {X minus_8, X minus_8 + 13, X minus_8 + 13, -40, '+'}, |
| 198 | {X minus_9, X minus_9 + 26, X minus_9 + 26, -80, '+'}, |
| 199 | {X minus_10, X minus_10 + 29, X minus_10 + 29, -136, '+'}, |
| 200 | {X minus_11, X minus_11 + 29, X minus_11 + 29, -242, '+'}, |
| 201 | {X minus_12, X minus_12 + 29, X minus_12 + 29, -455, '+'}, |
| 202 | {X minus_13, X minus_13 + 29, X minus_13 + 29, -880, '+'}, |
| 203 | }; |
| 204 | |
| 205 | const FLONUM_TYPE flonum_positive_powers_of_ten[] = { |
| 206 | {X zero, X zero, X zero, 0, '+'}, |
| 207 | {X plus_1, X plus_1 + 0, X plus_1 + 0, 0, '+'}, |
| 208 | {X plus_2, X plus_2 + 0, X plus_2 + 0, 0, '+'}, |
| 209 | {X plus_3, X plus_3 + 0, X plus_3 + 0, 0, '+'}, |
| 210 | {X plus_4, X plus_4 + 1, X plus_4 + 1, 0, '+'}, |
| 211 | {X plus_5, X plus_5 + 2, X plus_5 + 2, 1, '+'}, |
| 212 | {X plus_6, X plus_6 + 4, X plus_6 + 4, 2, '+'}, |
| 213 | {X plus_7, X plus_7 + 9, X plus_7 + 9, 4, '+'}, |
| 214 | {X plus_8, X plus_8 + 18, X plus_8 + 18, 8, '+'}, |
| 215 | {X plus_9, X plus_9 + 29, X plus_9 + 29, 24, '+'}, |
| 216 | {X plus_10, X plus_10 + 29, X plus_10 + 29, 77, '+'}, |
| 217 | {X plus_11, X plus_11 + 29, X plus_11 + 29, 183, '+'}, |
| 218 | {X plus_12, X plus_12 + 29, X plus_12 + 29, 396, '+'}, |
| 219 | {X plus_13, X plus_13 + 29, X plus_13 + 29, 821, '+'}, |
| 220 | }; |
| 221 | |
| 222 | #ifdef VMS |
| 223 | void |
| 224 | dummy1 () |
| 225 | { |
| 226 | } |
| 227 | #endif |