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[deliverable/binutils-gdb.git] / gas / flonum-konst.c
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252b5132 1/* flonum_const.c - Useful Flonum constants
2571583a 2 Copyright (C) 1987-2017 Free Software Foundation, Inc.
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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
ec2655a6 8 the Free Software Foundation; either version 3, or (at your option)
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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
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18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
252b5132 20
29589b0c 21#include "ansidecl.h"
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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
f0e652b4 25 I really understood this stuff. */
252b5132 26
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27const int table_size_of_flonum_powers_of_ten = 13;
28
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29static const LITTLENUM_TYPE zero[] = {
30 1
31};
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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 */
e6c774b4 46static const LITTLENUM_TYPE minus_1[] = {
252b5132 47 39322, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321,
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48 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553
49};
50
51static const LITTLENUM_TYPE plus_1[] = {
52 10
53};
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54
55/* JF: If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
e6c774b4 56static const LITTLENUM_TYPE minus_2[] = {
252b5132 57 10486, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807,
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58 10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655
59};
60
61static const LITTLENUM_TYPE plus_2[] = {
62 100
63};
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64
65/* This approaches .0001 */
e6c774b4 66static const LITTLENUM_TYPE minus_3[] = {
252b5132 67 52534, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503,
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68 2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6
69};
70
71static const LITTLENUM_TYPE plus_3[] = {
72 10000
73};
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74
75/* JF: this approaches 1e-8 */
e6c774b4 76static const LITTLENUM_TYPE minus_4[] = {
252b5132 77 22517, 49501, 54293, 19424, 60699, 6716, 24348, 22618, 23904, 21327,
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78 3919, 44703, 19149, 28803, 48959, 6259, 50273, 62237, 42
79};
80
252b5132 81/* This equals 1525 * 2^16 + 57600 */
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82static const LITTLENUM_TYPE plus_4[] = {
83 57600, 1525
84};
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85
86/* This approaches 1e-16 */
e6c774b4 87static const LITTLENUM_TYPE minus_5[] = {
252b5132 88 22199, 45957, 17005, 26266, 10526, 16260, 55017, 35680, 40443, 19789,
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89 17356, 30195, 55905, 28426, 63010, 44197, 1844
90};
252b5132 91
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92static const LITTLENUM_TYPE plus_5[] = {
93 28609, 34546, 35
94};
95
96static const LITTLENUM_TYPE minus_6[] = {
252b5132 97 30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
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98 20069, 43857, 60487, 51
99};
252b5132 100
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101static const LITTLENUM_TYPE plus_6[] = {
102 61313, 34220, 16731, 11629, 1262
103};
252b5132 104
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105static const LITTLENUM_TYPE minus_7[] = {
106 29819, 14733, 21490, 40602, 31315, 65186, 2695
107};
108
109static const LITTLENUM_TYPE plus_7[] = {
110 7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24
111};
112
113static const LITTLENUM_TYPE minus_8[] = {
252b5132 114 27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
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115 24178, 15922, 59427, 110
116};
117
118static const LITTLENUM_TYPE plus_8[] = {
252b5132 119 15873, 11925, 39177, 991, 14589, 3861, 58415, 9076, 62956, 54223,
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120 56328, 50180, 45274, 48333, 32537, 42547, 9731, 59679, 590
121};
252b5132 122
e6c774b4 123static const LITTLENUM_TYPE minus_9[] = {
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124 11042, 8464, 58971, 63429, 6022, 63485, 5500, 53464, 47545, 50068,
125 56988, 22819, 49708, 54493, 9920, 47667, 40409, 35764, 10383, 54466,
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126 32702, 17493, 32420, 34382, 22750, 20681, 12300
127};
128
129static const LITTLENUM_TYPE plus_9[] = {
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130 20678, 27614, 28272, 53066, 55311, 54677, 29038, 9906, 26288, 44486,
131 13860, 7445, 54106, 15426, 21518, 25599, 29632, 52309, 61207, 26105,
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132 10482, 21948, 51191, 32988, 60892, 62574, 61390, 24540, 21495, 5
133};
252b5132 134
e6c774b4 135static const LITTLENUM_TYPE minus_10[] = {
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136 6214, 48771, 23471, 30163, 31763, 38013, 57001, 11770, 18263, 36366,
137 20742, 45086, 56969, 53231, 37856, 55814, 38057, 15692, 46761, 8713,
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138 6102, 20083, 8269, 11839, 11571, 50963, 15649, 11698, 40675, 2308
139};
140
141static const LITTLENUM_TYPE plus_10[] = {
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142 63839, 36576, 45712, 44516, 37803, 29482, 4966, 30556, 37961, 23310,
143 27070, 44972, 29507, 48257, 45209, 7494, 17831, 38728, 41577, 29443,
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144 36016, 7955, 35339, 35479, 36011, 14553, 49618, 5588, 25396, 28
145};
252b5132 146
e6c774b4 147static const LITTLENUM_TYPE minus_11[] = {
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148 16663, 56882, 61983, 7804, 36555, 32060, 34502, 1000, 14356, 21681,
149 6605, 34767, 51411, 59048, 53614, 39850, 30079, 6496, 6846, 26841,
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150 40778, 19578, 59899, 44085, 54016, 24259, 11232, 21229, 21313, 81
151};
152
153static const LITTLENUM_TYPE plus_11[] = {
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154 92, 9054, 62707, 17993, 7821, 56838, 13992, 21321, 29637, 48426,
155 42982, 38668, 49574, 28820, 18200, 18927, 53979, 16219, 37484, 2516,
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156 44642, 14665, 11587, 41926, 13556, 23956, 54320, 6661, 55766, 805
157};
252b5132 158
e6c774b4 159static const LITTLENUM_TYPE minus_12[] = {
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160 33202, 45969, 58804, 56734, 16482, 26007, 44984, 49334, 31007, 32944,
161 44517, 63329, 47131, 15291, 59465, 2264, 23218, 11829, 59771, 38798,
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162 31051, 28748, 23129, 40541, 41562, 35108, 50620, 59014, 51817, 6613
163};
164
165static const LITTLENUM_TYPE plus_12[] = {
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166 10098, 37922, 58070, 7432, 10470, 63465, 23718, 62190, 47420, 7009,
167 38443, 4587, 45596, 38472, 52129, 52779, 29012, 13559, 48688, 31678,
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168 41753, 58662, 10668, 36067, 29906, 56906, 21461, 46556, 59571, 9
169};
252b5132 170
e6c774b4 171static const LITTLENUM_TYPE minus_13[] = {
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172 45309, 27592, 37144, 34637, 34328, 41671, 34620, 24135, 53401, 22112,
173 21576, 45147, 39310, 44051, 48572, 3676, 46544, 59768, 33350, 2323,
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174 49524, 61568, 3903, 36487, 36356, 30903, 14975, 9035, 29715, 667
175};
176
177static const LITTLENUM_TYPE plus_13[] = {
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178 18788, 16960, 6318, 45685, 55400, 46230, 35794, 25588, 7253, 55541,
179 49716, 59760, 63592, 8191, 63765, 58530, 44667, 13294, 10001, 55586,
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180 47887, 18738, 9509, 40896, 42506, 52580, 4171, 325, 12329, 98
181};
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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
e6c774b4 188const FLONUM_TYPE flonum_negative_powers_of_ten[] = {
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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
e6c774b4 205const FLONUM_TYPE flonum_positive_powers_of_ten[] = {
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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
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223void
224dummy1 ()
225{
226}
252b5132 227#endif
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