flonum-konst.c revision 1.1
1/* flonum_const.c - Useful Flonum constants 2 Copyright (C) 1987, 1990, 1991, 1992 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 2, 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 18 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20#include <ansidecl.h> 21#include "flonum.h" 22/* JF: I added the last entry to this table, and I'm not 23 sure if its right or not. Could go either way. I wish 24 I really understood this stuff. */ 25 26 27const int table_size_of_flonum_powers_of_ten = 11; 28 29static const LITTLENUM_TYPE zero[] = 30{1}; 31 32/***********************************************************************\ 33 * * 34 * Warning: the low order bits may be WRONG here. * 35 * I took this from a suspect bc(1) script. * 36 * "minus_X"[] is supposed to be 10^(2^-X) expressed in base 2^16. * 37 * The radix point is just AFTER the highest element of the [] * 38 * * 39 * Because bc rounds DOWN for printing (I think), the lowest * 40 * significance littlenums should probably have 1 added to them. * 41 * * 42 \***********************************************************************/ 43 44/* JF: If this equals 6553/(2^16)+39321/(2^32)+... it approaches .1 */ 45static const LITTLENUM_TYPE minus_1[] = 46{ 47 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 48 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553}; 49static const LITTLENUM_TYPE plus_1[] = 50{10}; 51 52/* JF: If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */ 53static const LITTLENUM_TYPE minus_2[] = 54{ 55 10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807, 56 10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655}; 57static const LITTLENUM_TYPE plus_2[] = 58{100}; 59 60/* This approaches .0001 */ 61static const LITTLENUM_TYPE minus_3[] = 62{ 63 52533, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503, 64 2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6}; 65static const LITTLENUM_TYPE plus_3[] = 66{10000}; 67 68/* JF: this approaches 1e-8 */ 69static const LITTLENUM_TYPE minus_4[] = 70{ 71 22516, 49501, 54293, 19424, 60699, 6716, 24348, 22618, 23904, 21327, 72 3919, 44703, 19149, 28803, 48959, 6259, 50273, 62237, 42}; 73/* This equals 1525 * 2^16 + 57600 */ 74static const LITTLENUM_TYPE plus_4[] = 75{57600, 1525}; 76 77/* This approaches 1e-16 */ 78static const LITTLENUM_TYPE minus_5[] = 79{ 80 22199, 45957, 17005, 26266, 10526, 16260, 55017, 35680, 40443, 19789, 81 17356, 30195, 55905, 28426, 63010, 44197, 1844}; 82static const LITTLENUM_TYPE plus_5[] = 83{28609, 34546, 35}; 84 85static const LITTLENUM_TYPE minus_6[] = 86{ 87 30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929, 88 20069, 43857, 60487, 51}; 89static const LITTLENUM_TYPE plus_6[] = 90{61313, 34220, 16731, 11629, 1262}; 91 92static const LITTLENUM_TYPE minus_7[] = 93{ 94 29819, 14733, 21490, 40602, 31315, 65186, 2695}; 95static const LITTLENUM_TYPE plus_7[] = 96{ 97 7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24}; 98 99static const LITTLENUM_TYPE minus_8[] = 100{ 101 45849, 19069, 18068, 36324, 37948, 48745, 10873, 64360, 15961, 20566, 102 24178, 15922, 59427, 110}; 103static const LITTLENUM_TYPE plus_8[] = 104{ 105 15873, 11925, 39177, 991, 14589, 19735, 25347, 65086, 53853, 938, 106 37209, 47086, 33626, 23253, 32586, 42547, 9731, 59679, 590}; 107 108static const LITTLENUM_TYPE minus_9[] = 109{ 110 63601, 55221, 43562, 33661, 29067, 28203, 65417, 64352, 22462, 41110, 111 12570, 28635, 23199, 50572, 28471, 27074, 46375, 64028, 13106, 63700, 112 32698, 17493, 32420, 34382, 22750, 20681, 12300}; 113static const LITTLENUM_TYPE plus_9[] = 114{ 115 63564, 61556, 29377, 54467, 18621, 28141, 36415, 61241, 47119, 30026, 116 19740, 46002, 13541, 61413, 30480, 38664, 32205, 50593, 51112, 48904, 117 48263, 43814, 286, 30826, 52813, 62575, 61390, 24540, 21495, 5}; 118 119static const LITTLENUM_TYPE minus_10[] = 120{ 121 50313, 34681, 1464, 25889, 19575, 41125, 17635, 4598, 49708, 13427, 122 17287, 56115, 53783, 38255, 32415, 17778, 31596, 7557, 20951, 18477, 123 40353, 1178, 44405, 11837, 11571, 50963, 15649, 11698, 40675, 2308,}; 124static const LITTLENUM_TYPE plus_10[] = 125{ 126 18520, 53764, 54535, 61910, 61962, 59843, 46270, 58053, 12473, 63785, 127 2449, 43230, 50044, 47595, 10403, 35766, 32607, 1124, 24966, 35044, 128 25524, 23631, 18826, 14518, 58448, 14562, 49618, 5588, 25396, 28}; 129 130static const LITTLENUM_TYPE minus_11[] = 131{ 132 6223, 59909, 62437, 59960, 14652, 45336, 48800, 7647, 51962, 37982, 133 60436, 58176, 26767, 8440, 9831, 48556, 20994, 14148, 6757, 17221, 134 60624, 46129, 53210, 44085, 54016, 24259, 11232, 21229, 21313, 81,}; 135static const LITTLENUM_TYPE plus_11[] = 136{ 137 36159, 2055, 33615, 61362, 23581, 62454, 9748, 15275, 39284, 58636, 138 16269, 42793, 47240, 45774, 50861, 48400, 9413, 40281, 4030, 9572, 139 7984, 33038, 59522, 19450, 40593, 24486, 54320, 6661, 55766, 805,}; 140 141/* Shut up complaints about differing pointer types. They only differ 142 in the const attribute, but there isn't any easy way to do this 143 */ 144#define X (LITTLENUM_TYPE *) 145 146const FLONUM_TYPE flonum_negative_powers_of_ten[] = 147{ 148 {X zero, X zero, X zero, 0, '+'}, 149 {X minus_1, X minus_1 + 19, X minus_1 + 19, -20, '+'}, 150 {X minus_2, X minus_2 + 19, X minus_2 + 19, -20, '+'}, 151 {X minus_3, X minus_3 + 19, X minus_3 + 19, -20, '+'}, 152 {X minus_4, X minus_4 + 18, X minus_4 + 18, -20, '+'}, 153 {X minus_5, X minus_5 + 16, X minus_5 + 16, -20, '+'}, 154 {X minus_6, X minus_6 + 13, X minus_6 + 13, -20, '+'}, 155 {X minus_7, X minus_7 + 6, X minus_7 + 6, -20, '+'}, 156 {X minus_8, X minus_8 + 13, X minus_8 + 13, -40, '+'}, 157 {X minus_9, X minus_9 + 26, X minus_9 + 26, -80, '+'}, 158 {X minus_10, X minus_10 + 29, X minus_10 + 29, -136, '+'}, 159 {X minus_11, X minus_11 + 29, X minus_11 + 29, -242, '+'}, 160}; 161 162const FLONUM_TYPE flonum_positive_powers_of_ten[] = 163{ 164 {X zero, X zero, X zero, 0, '+'}, 165 {X plus_1, X plus_1 + 0, X plus_1 + 0, 0, '+'}, 166 {X plus_2, X plus_2 + 0, X plus_2 + 0, 0, '+'}, 167 {X plus_3, X plus_3 + 0, X plus_3 + 0, 0, '+'}, 168 {X plus_4, X plus_4 + 1, X plus_4 + 1, 0, '+'}, 169 {X plus_5, X plus_5 + 2, X plus_5 + 2, 1, '+'}, 170 {X plus_6, X plus_6 + 4, X plus_6 + 4, 2, '+'}, 171 {X plus_7, X plus_7 + 9, X plus_7 + 9, 4, '+'}, 172 {X plus_8, X plus_8 + 18, X plus_8 + 18, 8, '+'}, 173 {X plus_9, X plus_9 + 29, X plus_9 + 29, 24, '+'}, 174 {X plus_10, X plus_10 + 29, X plus_10 + 29, 77, '+'}, 175 {X plus_11, X plus_11 + 29, X plus_11 + 29, 183, '+'}, 176}; 177 178#ifdef VMS 179void dummy1 () { } 180#endif 181/* end of flonum_const.c */ 182