Home | History | Annotate | Download | only in gas
      1 /* flonum_const.c - Useful Flonum constants
      2    Copyright (C) 1987-2014 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 
     27 const int table_size_of_flonum_powers_of_ten = 13;
     28 
     29 static 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 */
     46 static 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 
     51 static const LITTLENUM_TYPE plus_1[] = {
     52   10
     53 };
     54 
     55 /* JF:  If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
     56 static 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 
     61 static const LITTLENUM_TYPE plus_2[] = {
     62   100
     63 };
     64 
     65 /* This approaches .0001 */
     66 static 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 
     71 static const LITTLENUM_TYPE plus_3[] = {
     72   10000
     73 };
     74 
     75 /* JF: this approaches 1e-8 */
     76 static 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 */
     82 static const LITTLENUM_TYPE plus_4[] = {
     83   57600, 1525
     84 };
     85 
     86 /* This approaches 1e-16 */
     87 static 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 
     92 static const LITTLENUM_TYPE plus_5[] = {
     93   28609, 34546, 35
     94 };
     95 
     96 static const LITTLENUM_TYPE minus_6[] = {
     97   30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
     98   20069, 43857, 60487, 51
     99 };
    100 
    101 static const LITTLENUM_TYPE plus_6[] = {
    102   61313, 34220, 16731, 11629, 1262
    103 };
    104 
    105 static const LITTLENUM_TYPE minus_7[] = {
    106   29819, 14733, 21490, 40602, 31315, 65186, 2695
    107 };
    108 
    109 static const LITTLENUM_TYPE plus_7[] = {
    110   7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24
    111 };
    112 
    113 static const LITTLENUM_TYPE minus_8[] = {
    114   27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
    115   24178, 15922, 59427, 110
    116 };
    117 
    118 static 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 
    123 static 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 
    129 static 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 
    135 static 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 
    141 static 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 
    147 static 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 
    153 static 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 
    159 static 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 
    165 static 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 
    171 static 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 
    177 static 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 
    188 const 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 
    205 const 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
    223 void
    224 dummy1 ()
    225 {
    226 }
    227 #endif
    228