gas/flonum-konst.c

   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
  27 const int table_size_of_flonum_powers_of_ten = 13;
  28
  29 static 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 */
  45 static const LITTLENUM_TYPE minus_1[] =
  46 {
  47   39322, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321,
  48   39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553};
  49 static const LITTLENUM_TYPE plus_1[] =
  50 {10};
  51
  52 /* JF:  If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
  53 static const LITTLENUM_TYPE minus_2[] =
  54 {
  55   10486, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807,
  56   10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655};
  57 static const LITTLENUM_TYPE plus_2[] =
  58 {100};
  59
  60 /* This approaches .0001 */
  61 static const LITTLENUM_TYPE minus_3[] =
  62 {
  63   52534, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503,
  64   2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6};
  65 static const LITTLENUM_TYPE plus_3[] =
  66 {10000};
  67
  68 /* JF: this approaches 1e-8 */
  69 static const LITTLENUM_TYPE minus_4[] =
  70 {
  71   22517, 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 */
  74 static const LITTLENUM_TYPE plus_4[] =
  75 {57600, 1525};
  76
  77 /* This approaches 1e-16 */
  78 static 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};
  82 static const LITTLENUM_TYPE plus_5[] =
  83 {28609, 34546, 35};
  84
  85 static const LITTLENUM_TYPE minus_6[] =
  86 {
  87   30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
  88   20069, 43857, 60487, 51};
  89 static const LITTLENUM_TYPE plus_6[] =
  90 {61313, 34220, 16731, 11629, 1262};
  91
  92 static const LITTLENUM_TYPE minus_7[] =
  93 {
  94   29819, 14733, 21490, 40602, 31315, 65186, 2695};
  95 static const LITTLENUM_TYPE plus_7[] =
  96 {
  97   7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24};
  98
  99 static const LITTLENUM_TYPE minus_8[] =
 100 {
 101   27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
 102   24178, 15922, 59427, 110};
 103 static const LITTLENUM_TYPE plus_8[] =
 104 {
 105   15873, 11925, 39177, 991, 14589, 3861, 58415, 9076, 62956, 54223,
 106   56328, 50180, 45274, 48333, 32537, 42547, 9731, 59679, 590};
 107
 108 static const LITTLENUM_TYPE minus_9[] =
 109 {
 110   11042, 8464, 58971, 63429, 6022, 63485, 5500, 53464, 47545, 50068,
 111   56988, 22819, 49708, 54493, 9920, 47667, 40409, 35764, 10383, 54466,
 112   32702, 17493, 32420, 34382, 22750, 20681, 12300};
 113 static const LITTLENUM_TYPE plus_9[] =
 114 {
 115   20678, 27614, 28272, 53066, 55311, 54677, 29038, 9906, 26288, 44486,
 116   13860, 7445, 54106, 15426, 21518, 25599, 29632, 52309, 61207, 26105,
 117   10482, 21948, 51191, 32988, 60892, 62574, 61390, 24540, 21495, 5};
 118
 119 static const LITTLENUM_TYPE minus_10[] =
 120 {
 121   6214, 48771, 23471, 30163, 31763, 38013, 57001, 11770, 18263, 36366,
 122   20742, 45086, 56969, 53231, 37856, 55814, 38057, 15692, 46761, 8713,
 123   6102, 20083, 8269, 11839, 11571, 50963, 15649, 11698, 40675, 2308};
 124 static const LITTLENUM_TYPE plus_10[] =
 125 {
 126   63839, 36576, 45712, 44516, 37803, 29482, 4966, 30556, 37961, 23310,
 127   27070, 44972, 29507, 48257, 45209, 7494, 17831, 38728, 41577, 29443,
 128   36016, 7955, 35339, 35479, 36011, 14553, 49618, 5588, 25396, 28};
 129
 130 static const LITTLENUM_TYPE minus_11[] =
 131 {
 132   16663, 56882, 61983, 7804, 36555, 32060, 34502, 1000, 14356, 21681,
 133   6605, 34767, 51411, 59048, 53614, 39850, 30079, 6496, 6846, 26841,
 134   40778, 19578, 59899, 44085, 54016, 24259, 11232, 21229, 21313, 81};
 135 static const LITTLENUM_TYPE plus_11[] =
 136 {
 137   92, 9054, 62707, 17993, 7821, 56838, 13992, 21321, 29637, 48426,
 138   42982, 38668, 49574, 28820, 18200, 18927, 53979, 16219, 37484, 2516,
 139   44642, 14665, 11587, 41926, 13556, 23956, 54320, 6661, 55766, 805};
 140
 141 static const LITTLENUM_TYPE minus_12[] =
 142 {
 143   33202, 45969, 58804, 56734, 16482, 26007, 44984, 49334, 31007, 32944,
 144   44517, 63329, 47131, 15291, 59465, 2264, 23218, 11829, 59771, 38798,
 145   31051, 28748, 23129, 40541, 41562, 35108, 50620, 59014, 51817, 6613};
 146 static const LITTLENUM_TYPE plus_12[] =
 147 {
 148   10098, 37922, 58070, 7432, 10470, 63465, 23718, 62190, 47420, 7009,
 149   38443, 4587, 45596, 38472, 52129, 52779, 29012, 13559, 48688, 31678,
 150   41753, 58662, 10668, 36067, 29906, 56906, 21461, 46556, 59571, 9};
 151
 152 static const LITTLENUM_TYPE minus_13[] =
 153 {
 154   45309, 27592, 37144, 34637, 34328, 41671, 34620, 24135, 53401, 22112,
 155   21576, 45147, 39310, 44051, 48572, 3676, 46544, 59768, 33350, 2323,
 156   49524, 61568, 3903, 36487, 36356, 30903, 14975, 9035, 29715, 667};
 157 static const LITTLENUM_TYPE plus_13[] =
 158 {
 159   18788, 16960, 6318, 45685, 55400, 46230, 35794, 25588, 7253, 55541,
 160   49716, 59760, 63592, 8191, 63765, 58530, 44667, 13294, 10001, 55586,
 161   47887, 18738, 9509, 40896, 42506, 52580, 4171, 325, 12329, 98};
 162
 163 /* Shut up complaints about differing pointer types.  They only differ
 164    in the const attribute, but there isn't any easy way to do this
 165    */
 166 #define X (LITTLENUM_TYPE *)
 167
 168 const FLONUM_TYPE flonum_negative_powers_of_ten[] =
 169 {
 170   {X zero, X zero, X zero, 0, '+'},
 171   {X minus_1, X minus_1 + 19, X minus_1 + 19, -20, '+'},
 172   {X minus_2, X minus_2 + 19, X minus_2 + 19, -20, '+'},
 173   {X minus_3, X minus_3 + 19, X minus_3 + 19, -20, '+'},
 174   {X minus_4, X minus_4 + 18, X minus_4 + 18, -20, '+'},
 175   {X minus_5, X minus_5 + 16, X minus_5 + 16, -20, '+'},
 176   {X minus_6, X minus_6 + 13, X minus_6 + 13, -20, '+'},
 177   {X minus_7, X minus_7 + 6, X minus_7 + 6, -20, '+'},
 178   {X minus_8, X minus_8 + 13, X minus_8 + 13, -40, '+'},
 179   {X minus_9, X minus_9 + 26, X minus_9 + 26, -80, '+'},
 180   {X minus_10, X minus_10 + 29, X minus_10 + 29, -136, '+'},
 181   {X minus_11, X minus_11 + 29, X minus_11 + 29, -242, '+'},
 182   {X minus_12, X minus_12 + 29, X minus_12 + 29, -455, '+'},
 183   {X minus_13, X minus_13 + 29, X minus_13 + 29, -880, '+'},
 184 };
 185
 186 const FLONUM_TYPE flonum_positive_powers_of_ten[] =
 187 {
 188   {X zero, X zero, X zero, 0, '+'},
 189   {X plus_1, X plus_1 + 0, X plus_1 + 0, 0, '+'},
 190   {X plus_2, X plus_2 + 0, X plus_2 + 0, 0, '+'},
 191   {X plus_3, X plus_3 + 0, X plus_3 + 0, 0, '+'},
 192   {X plus_4, X plus_4 + 1, X plus_4 + 1, 0, '+'},
 193   {X plus_5, X plus_5 + 2, X plus_5 + 2, 1, '+'},
 194   {X plus_6, X plus_6 + 4, X plus_6 + 4, 2, '+'},
 195   {X plus_7, X plus_7 + 9, X plus_7 + 9, 4, '+'},
 196   {X plus_8, X plus_8 + 18, X plus_8 + 18, 8, '+'},
 197   {X plus_9, X plus_9 + 29, X plus_9 + 29, 24, '+'},
 198   {X plus_10, X plus_10 + 29, X plus_10 + 29, 77, '+'},
 199   {X plus_11, X plus_11 + 29, X plus_11 + 29, 183, '+'},
 200   {X plus_12, X plus_12 + 29, X plus_12 + 29, 396, '+'},
 201   {X plus_13, X plus_13 + 29, X plus_13 + 29, 821, '+'},
 202 };
 203
 204 #ifdef VMS
 205 void dummy1 () { }
 206 #endif
 207 /* end of flonum_const.c */