1/* flonum_const.c - Useful Flonum constants
2   Copyright (C) 1987-2017 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
27const int table_size_of_flonum_powers_of_ten = 13;
28
29static 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 */
46static 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
51static const LITTLENUM_TYPE plus_1[] = {
52  10
53};
54
55/* JF:  If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
56static 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
61static const LITTLENUM_TYPE plus_2[] = {
62  100
63};
64
65/* This approaches .0001 */
66static 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
71static const LITTLENUM_TYPE plus_3[] = {
72  10000
73};
74
75/* JF: this approaches 1e-8 */
76static 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 */
82static const LITTLENUM_TYPE plus_4[] = {
83  57600, 1525
84};
85
86/* This approaches 1e-16 */
87static 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
92static const LITTLENUM_TYPE plus_5[] = {
93  28609, 34546, 35
94};
95
96static const LITTLENUM_TYPE minus_6[] = {
97  30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
98  20069, 43857, 60487, 51
99};
100
101static const LITTLENUM_TYPE plus_6[] = {
102  61313, 34220, 16731, 11629, 1262
103};
104
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[] = {
114  27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
115  24178, 15922, 59427, 110
116};
117
118static 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
123static 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
129static 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
135static 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
141static 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
147static 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
153static 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
159static 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
165static 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
171static 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
177static 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
188const 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
205const 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
223void
224dummy1 ()
225{
226}
227#endif
228