flonum-konst.c revision 33965 
1/* flonum_const.c - Useful Flonum constants
2   Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 1996
3   Free Software Foundation, Inc.
4
5   This file is part of GAS, the GNU Assembler.
6
7   GAS is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 2, or (at your option)
10   any later version.
11
12   GAS is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with GAS; see the file COPYING.  If not, write to the Free
19   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20   02111-1307, USA.  */
21
22#include <ansidecl.h>
23#include "flonum.h"
24/* JF:  I added the last entry to this table, and I'm not
25   sure if its right or not.  Could go either way.  I wish
26   I really understood this stuff. */
27
28
29const int table_size_of_flonum_powers_of_ten = 13;
30
31static const LITTLENUM_TYPE zero[] =
32{1};
33
34/***********************************************************************\
35 *									*
36 *	Warning: the low order bits may be WRONG here.			*
37 *	I took this from a suspect bc(1) script.			*
38 *	"minus_X"[] is supposed to be 10^(2^-X) expressed in base 2^16.	*
39 *	The radix point is just AFTER the highest element of the []	*
40 *									*
41 *	Because bc rounds DOWN for printing (I think), the lowest	*
42 *	significance littlenums should probably have 1 added to them.	*
43 *									*
44 \***********************************************************************/
45
46/* JF:  If this equals 6553/(2^16)+39321/(2^32)+...  it approaches .1 */
47static const LITTLENUM_TYPE minus_1[] =
48{
49  39322, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321,
50  39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553};
51static const LITTLENUM_TYPE plus_1[] =
52{10};
53
54/* JF:  If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
55static const LITTLENUM_TYPE minus_2[] =
56{
57  10486, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807,
58  10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655};
59static const LITTLENUM_TYPE plus_2[] =
60{100};
61
62/* This approaches .0001 */
63static const LITTLENUM_TYPE minus_3[] =
64{
65  52534, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503,
66  2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6};
67static const LITTLENUM_TYPE plus_3[] =
68{10000};
69
70/* JF: this approaches 1e-8 */
71static const LITTLENUM_TYPE minus_4[] =
72{
73  22517, 49501, 54293, 19424, 60699, 6716, 24348, 22618, 23904, 21327,
74  3919, 44703, 19149, 28803, 48959, 6259, 50273, 62237, 42};
75/* This equals 1525 * 2^16 + 57600 */
76static const LITTLENUM_TYPE plus_4[] =
77{57600, 1525};
78
79/* This approaches 1e-16 */
80static const LITTLENUM_TYPE minus_5[] =
81{
82  22199, 45957, 17005, 26266, 10526, 16260, 55017, 35680, 40443, 19789,
83  17356, 30195, 55905, 28426, 63010, 44197, 1844};
84static const LITTLENUM_TYPE plus_5[] =
85{28609, 34546, 35};
86
87static const LITTLENUM_TYPE minus_6[] =
88{
89  30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
90  20069, 43857, 60487, 51};
91static const LITTLENUM_TYPE plus_6[] =
92{61313, 34220, 16731, 11629, 1262};
93
94static const LITTLENUM_TYPE minus_7[] =
95{
96  29819, 14733, 21490, 40602, 31315, 65186, 2695};
97static const LITTLENUM_TYPE plus_7[] =
98{
99  7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24};
100
101static const LITTLENUM_TYPE minus_8[] =
102{
103  27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
104  24178, 15922, 59427, 110};
105static const LITTLENUM_TYPE plus_8[] =
106{
107  15873, 11925, 39177, 991, 14589, 3861, 58415, 9076, 62956, 54223,
108  56328, 50180, 45274, 48333, 32537, 42547, 9731, 59679, 590};
109
110static const LITTLENUM_TYPE minus_9[] =
111{
112  11042, 8464, 58971, 63429, 6022, 63485, 5500, 53464, 47545, 50068,
113  56988, 22819, 49708, 54493, 9920, 47667, 40409, 35764, 10383, 54466,
114  32702, 17493, 32420, 34382, 22750, 20681, 12300};
115static const LITTLENUM_TYPE plus_9[] =
116{
117  20678, 27614, 28272, 53066, 55311, 54677, 29038, 9906, 26288, 44486,
118  13860, 7445, 54106, 15426, 21518, 25599, 29632, 52309, 61207, 26105,
119  10482, 21948, 51191, 32988, 60892, 62574, 61390, 24540, 21495, 5};
120
121static const LITTLENUM_TYPE minus_10[] =
122{
123  6214, 48771, 23471, 30163, 31763, 38013, 57001, 11770, 18263, 36366,
124  20742, 45086, 56969, 53231, 37856, 55814, 38057, 15692, 46761, 8713,
125  6102, 20083, 8269, 11839, 11571, 50963, 15649, 11698, 40675, 2308};
126static const LITTLENUM_TYPE plus_10[] =
127{
128  63839, 36576, 45712, 44516, 37803, 29482, 4966, 30556, 37961, 23310,
129  27070, 44972, 29507, 48257, 45209, 7494, 17831, 38728, 41577, 29443,
130  36016, 7955, 35339, 35479, 36011, 14553, 49618, 5588, 25396, 28};
131
132static const LITTLENUM_TYPE minus_11[] =
133{
134  16663, 56882, 61983, 7804, 36555, 32060, 34502, 1000, 14356, 21681,
135  6605, 34767, 51411, 59048, 53614, 39850, 30079, 6496, 6846, 26841,
136  40778, 19578, 59899, 44085, 54016, 24259, 11232, 21229, 21313, 81};
137static const LITTLENUM_TYPE plus_11[] =
138{
139  92, 9054, 62707, 17993, 7821, 56838, 13992, 21321, 29637, 48426,
140  42982, 38668, 49574, 28820, 18200, 18927, 53979, 16219, 37484, 2516,
141  44642, 14665, 11587, 41926, 13556, 23956, 54320, 6661, 55766, 805};
142
143static const LITTLENUM_TYPE minus_12[] =
144{
145  33202, 45969, 58804, 56734, 16482, 26007, 44984, 49334, 31007, 32944,
146  44517, 63329, 47131, 15291, 59465, 2264, 23218, 11829, 59771, 38798,
147  31051, 28748, 23129, 40541, 41562, 35108, 50620, 59014, 51817, 6613};
148static const LITTLENUM_TYPE plus_12[] =
149{
150  10098, 37922, 58070, 7432, 10470, 63465, 23718, 62190, 47420, 7009,
151  38443, 4587, 45596, 38472, 52129, 52779, 29012, 13559, 48688, 31678,
152  41753, 58662, 10668, 36067, 29906, 56906, 21461, 46556, 59571, 9};
153
154static const LITTLENUM_TYPE minus_13[] =
155{
156  45309, 27592, 37144, 34637, 34328, 41671, 34620, 24135, 53401, 22112,
157  21576, 45147, 39310, 44051, 48572, 3676, 46544, 59768, 33350, 2323,
158  49524, 61568, 3903, 36487, 36356, 30903, 14975, 9035, 29715, 667};
159static const LITTLENUM_TYPE plus_13[] =
160{
161  18788, 16960, 6318, 45685, 55400, 46230, 35794, 25588, 7253, 55541,
162  49716, 59760, 63592, 8191, 63765, 58530, 44667, 13294, 10001, 55586,
163  47887, 18738, 9509, 40896, 42506, 52580, 4171, 325, 12329, 98};
164
165/* Shut up complaints about differing pointer types.  They only differ
166   in the const attribute, but there isn't any easy way to do this
167   */
168#define X (LITTLENUM_TYPE *)
169
170const FLONUM_TYPE flonum_negative_powers_of_ten[] =
171{
172  {X zero, X zero, X zero, 0, '+'},
173  {X minus_1, X minus_1 + 19, X minus_1 + 19, -20, '+'},
174  {X minus_2, X minus_2 + 19, X minus_2 + 19, -20, '+'},
175  {X minus_3, X minus_3 + 19, X minus_3 + 19, -20, '+'},
176  {X minus_4, X minus_4 + 18, X minus_4 + 18, -20, '+'},
177  {X minus_5, X minus_5 + 16, X minus_5 + 16, -20, '+'},
178  {X minus_6, X minus_6 + 13, X minus_6 + 13, -20, '+'},
179  {X minus_7, X minus_7 + 6, X minus_7 + 6, -20, '+'},
180  {X minus_8, X minus_8 + 13, X minus_8 + 13, -40, '+'},
181  {X minus_9, X minus_9 + 26, X minus_9 + 26, -80, '+'},
182  {X minus_10, X minus_10 + 29, X minus_10 + 29, -136, '+'},
183  {X minus_11, X minus_11 + 29, X minus_11 + 29, -242, '+'},
184  {X minus_12, X minus_12 + 29, X minus_12 + 29, -455, '+'},
185  {X minus_13, X minus_13 + 29, X minus_13 + 29, -880, '+'},
186};
187
188const FLONUM_TYPE flonum_positive_powers_of_ten[] =
189{
190  {X zero, X zero, X zero, 0, '+'},
191  {X plus_1, X plus_1 + 0, X plus_1 + 0, 0, '+'},
192  {X plus_2, X plus_2 + 0, X plus_2 + 0, 0, '+'},
193  {X plus_3, X plus_3 + 0, X plus_3 + 0, 0, '+'},
194  {X plus_4, X plus_4 + 1, X plus_4 + 1, 0, '+'},
195  {X plus_5, X plus_5 + 2, X plus_5 + 2, 1, '+'},
196  {X plus_6, X plus_6 + 4, X plus_6 + 4, 2, '+'},
197  {X plus_7, X plus_7 + 9, X plus_7 + 9, 4, '+'},
198  {X plus_8, X plus_8 + 18, X plus_8 + 18, 8, '+'},
199  {X plus_9, X plus_9 + 29, X plus_9 + 29, 24, '+'},
200  {X plus_10, X plus_10 + 29, X plus_10 + 29, 77, '+'},
201  {X plus_11, X plus_11 + 29, X plus_11 + 29, 183, '+'},
202  {X plus_12, X plus_12 + 29, X plus_12 + 29, 396, '+'},
203  {X plus_13, X plus_13 + 29, X plus_13 + 29, 821, '+'},
204};
205
206#ifdef VMS
207void dummy1 () { }
208#endif
209/* end of flonum_const.c */
210