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