gas/flonum-konst.c

   1 /* flonum_const.c - Useful Flonum constants
   2    Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 2000
   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 const int table_size_of_flonum_powers_of_ten = 13;
  29
  30 static const LITTLENUM_TYPE zero[] =
  31 {1};
  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 */
  46 static const LITTLENUM_TYPE minus_1[] =
  47 {
  48   39322, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321,
  49   39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553};
  50 static const LITTLENUM_TYPE plus_1[] =
  51 {10};
  52
  53 /* JF:  If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
  54 static const LITTLENUM_TYPE minus_2[] =
  55 {
  56   10486, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807,
  57   10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655};
  58 static const LITTLENUM_TYPE plus_2[] =
  59 {100};
  60
  61 /* This approaches .0001 */
  62 static const LITTLENUM_TYPE minus_3[] =
  63 {
  64   52534, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503,
  65   2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6};
  66 static const LITTLENUM_TYPE plus_3[] =
  67 {10000};
  68
  69 /* JF: this approaches 1e-8 */
  70 static const LITTLENUM_TYPE minus_4[] =
  71 {
  72   22517, 49501, 54293, 19424, 60699, 6716, 24348, 22618, 23904, 21327,
  73   3919, 44703, 19149, 28803, 48959, 6259, 50273, 62237, 42};
  74 /* This equals 1525 * 2^16 + 57600 */
  75 static const LITTLENUM_TYPE plus_4[] =
  76 {57600, 1525};
  77
  78 /* This approaches 1e-16 */
  79 static const LITTLENUM_TYPE minus_5[] =
  80 {
  81   22199, 45957, 17005, 26266, 10526, 16260, 55017, 35680, 40443, 19789,
  82   17356, 30195, 55905, 28426, 63010, 44197, 1844};
  83 static const LITTLENUM_TYPE plus_5[] =
  84 {28609, 34546, 35};
  85
  86 static const LITTLENUM_TYPE minus_6[] =
  87 {
  88   30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
  89   20069, 43857, 60487, 51};
  90 static const LITTLENUM_TYPE plus_6[] =
  91 {61313, 34220, 16731, 11629, 1262};
  92
  93 static const LITTLENUM_TYPE minus_7[] =
  94 {
  95   29819, 14733, 21490, 40602, 31315, 65186, 2695};
  96 static const LITTLENUM_TYPE plus_7[] =
  97 {
  98   7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24};
  99
 100 static const LITTLENUM_TYPE minus_8[] =
 101 {
 102   27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
 103   24178, 15922, 59427, 110};
 104 static const LITTLENUM_TYPE plus_8[] =
 105 {
 106   15873, 11925, 39177, 991, 14589, 3861, 58415, 9076, 62956, 54223,
 107   56328, 50180, 45274, 48333, 32537, 42547, 9731, 59679, 590};
 108
 109 static const LITTLENUM_TYPE minus_9[] =
 110 {
 111   11042, 8464, 58971, 63429, 6022, 63485, 5500, 53464, 47545, 50068,
 112   56988, 22819, 49708, 54493, 9920, 47667, 40409, 35764, 10383, 54466,
 113   32702, 17493, 32420, 34382, 22750, 20681, 12300};
 114 static const LITTLENUM_TYPE plus_9[] =
 115 {
 116   20678, 27614, 28272, 53066, 55311, 54677, 29038, 9906, 26288, 44486,
 117   13860, 7445, 54106, 15426, 21518, 25599, 29632, 52309, 61207, 26105,
 118   10482, 21948, 51191, 32988, 60892, 62574, 61390, 24540, 21495, 5};
 119
 120 static const LITTLENUM_TYPE minus_10[] =
 121 {
 122   6214, 48771, 23471, 30163, 31763, 38013, 57001, 11770, 18263, 36366,
 123   20742, 45086, 56969, 53231, 37856, 55814, 38057, 15692, 46761, 8713,
 124   6102, 20083, 8269, 11839, 11571, 50963, 15649, 11698, 40675, 2308};
 125 static const LITTLENUM_TYPE plus_10[] =
 126 {
 127   63839, 36576, 45712, 44516, 37803, 29482, 4966, 30556, 37961, 23310,
 128   27070, 44972, 29507, 48257, 45209, 7494, 17831, 38728, 41577, 29443,
 129   36016, 7955, 35339, 35479, 36011, 14553, 49618, 5588, 25396, 28};
 130
 131 static const LITTLENUM_TYPE minus_11[] =
 132 {
 133   16663, 56882, 61983, 7804, 36555, 32060, 34502, 1000, 14356, 21681,
 134   6605, 34767, 51411, 59048, 53614, 39850, 30079, 6496, 6846, 26841,
 135   40778, 19578, 59899, 44085, 54016, 24259, 11232, 21229, 21313, 81};
 136 static const LITTLENUM_TYPE plus_11[] =
 137 {
 138   92, 9054, 62707, 17993, 7821, 56838, 13992, 21321, 29637, 48426,
 139   42982, 38668, 49574, 28820, 18200, 18927, 53979, 16219, 37484, 2516,
 140   44642, 14665, 11587, 41926, 13556, 23956, 54320, 6661, 55766, 805};
 141
 142 static const LITTLENUM_TYPE minus_12[] =
 143 {
 144   33202, 45969, 58804, 56734, 16482, 26007, 44984, 49334, 31007, 32944,
 145   44517, 63329, 47131, 15291, 59465, 2264, 23218, 11829, 59771, 38798,
 146   31051, 28748, 23129, 40541, 41562, 35108, 50620, 59014, 51817, 6613};
 147 static const LITTLENUM_TYPE plus_12[] =
 148 {
 149   10098, 37922, 58070, 7432, 10470, 63465, 23718, 62190, 47420, 7009,
 150   38443, 4587, 45596, 38472, 52129, 52779, 29012, 13559, 48688, 31678,
 151   41753, 58662, 10668, 36067, 29906, 56906, 21461, 46556, 59571, 9};
 152
 153 static const LITTLENUM_TYPE minus_13[] =
 154 {
 155   45309, 27592, 37144, 34637, 34328, 41671, 34620, 24135, 53401, 22112,
 156   21576, 45147, 39310, 44051, 48572, 3676, 46544, 59768, 33350, 2323,
 157   49524, 61568, 3903, 36487, 36356, 30903, 14975, 9035, 29715, 667};
 158 static const LITTLENUM_TYPE plus_13[] =
 159 {
 160   18788, 16960, 6318, 45685, 55400, 46230, 35794, 25588, 7253, 55541,
 161   49716, 59760, 63592, 8191, 63765, 58530, 44667, 13294, 10001, 55586,
 162   47887, 18738, 9509, 40896, 42506, 52580, 4171, 325, 12329, 98};
 163
 164 /* Shut up complaints about differing pointer types.  They only differ
 165    in the const attribute, but there isn't any easy way to do this
 166    */
 167 #define X (LITTLENUM_TYPE *)
 168
 169 const FLONUM_TYPE flonum_negative_powers_of_ten[] =
 170 {
 171   {X zero, X zero, X zero, 0, '+'},
 172   {X minus_1, X minus_1 + 19, X minus_1 + 19, -20, '+'},
 173   {X minus_2, X minus_2 + 19, X minus_2 + 19, -20, '+'},
 174   {X minus_3, X minus_3 + 19, X minus_3 + 19, -20, '+'},
 175   {X minus_4, X minus_4 + 18, X minus_4 + 18, -20, '+'},
 176   {X minus_5, X minus_5 + 16, X minus_5 + 16, -20, '+'},
 177   {X minus_6, X minus_6 + 13, X minus_6 + 13, -20, '+'},
 178   {X minus_7, X minus_7 + 6, X minus_7 + 6, -20, '+'},
 179   {X minus_8, X minus_8 + 13, X minus_8 + 13, -40, '+'},
 180   {X minus_9, X minus_9 + 26, X minus_9 + 26, -80, '+'},
 181   {X minus_10, X minus_10 + 29, X minus_10 + 29, -136, '+'},
 182   {X minus_11, X minus_11 + 29, X minus_11 + 29, -242, '+'},
 183   {X minus_12, X minus_12 + 29, X minus_12 + 29, -455, '+'},
 184   {X minus_13, X minus_13 + 29, X minus_13 + 29, -880, '+'},
 185 };
 186
 187 const FLONUM_TYPE flonum_positive_powers_of_ten[] =
 188 {
 189   {X zero, X zero, X zero, 0, '+'},
 190   {X plus_1, X plus_1 + 0, X plus_1 + 0, 0, '+'},
 191   {X plus_2, X plus_2 + 0, X plus_2 + 0, 0, '+'},
 192   {X plus_3, X plus_3 + 0, X plus_3 + 0, 0, '+'},
 193   {X plus_4, X plus_4 + 1, X plus_4 + 1, 0, '+'},
 194   {X plus_5, X plus_5 + 2, X plus_5 + 2, 1, '+'},
 195   {X plus_6, X plus_6 + 4, X plus_6 + 4, 2, '+'},
 196   {X plus_7, X plus_7 + 9, X plus_7 + 9, 4, '+'},
 197   {X plus_8, X plus_8 + 18, X plus_8 + 18, 8, '+'},
 198   {X plus_9, X plus_9 + 29, X plus_9 + 29, 24, '+'},
 199   {X plus_10, X plus_10 + 29, X plus_10 + 29, 77, '+'},
 200   {X plus_11, X plus_11 + 29, X plus_11 + 29, 183, '+'},
 201   {X plus_12, X plus_12 + 29, X plus_12 + 29, 396, '+'},
 202   {X plus_13, X plus_13 + 29, X plus_13 + 29, 821, '+'},
 203 };
 204
 205 #ifdef VMS
 206 void
 207 dummy1 ()
 208 {
 209 }
 210 #endif