binutils-gdb/gas/flonum-konst.c

/* flonum_const.c - Useful Flonum constants
   Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 2000, 2002
   Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   GAS is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
   02110-1301, USA.  */

#include "ansidecl.h"
#include "flonum.h"
/* JF:  I added the last entry to this table, and I'm not
   sure if its right or not.  Could go either way.  I wish
   I really understood this stuff.  */

const int table_size_of_flonum_powers_of_ten = 13;

static const LITTLENUM_TYPE zero[] = {
  1
};

/***********************************************************************\
 *									*
 *	Warning: the low order bits may be WRONG here.			*
 *	I took this from a suspect bc(1) script.			*
 *	"minus_X"[] is supposed to be 10^(2^-X) expressed in base 2^16.	*
 *	The radix point is just AFTER the highest element of the []	*
 *									*
 *	Because bc rounds DOWN for printing (I think), the lowest	*
 *	significance littlenums should probably have 1 added to them.	*
 *									*
 \***********************************************************************/

/* JF:  If this equals 6553/(2^16)+39321/(2^32)+...  it approaches .1 */
static const LITTLENUM_TYPE minus_1[] = {
  39322, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321,
  39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 39321, 6553
};

static const LITTLENUM_TYPE plus_1[] = {
  10
};

/* JF:  If this equals 655/(2^16) + 23592/(2^32) + ... it approaches .01 */
static const LITTLENUM_TYPE minus_2[] = {
  10486, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 49807,
  10485, 36700, 62914, 23592, 49807, 10485, 36700, 62914, 23592, 655
};

static const LITTLENUM_TYPE plus_2[] = {
  100
};

/* This approaches .0001 */
static const LITTLENUM_TYPE minus_3[] = {
  52534, 20027, 37329, 65116, 64067, 60397, 14784, 18979, 33659, 19503,
  2726, 9542, 629, 2202, 40475, 10590, 4299, 47815, 36280, 6
};

static const LITTLENUM_TYPE plus_3[] = {
  10000
};

/* JF: this approaches 1e-8 */
static const LITTLENUM_TYPE minus_4[] = {
  22517, 49501, 54293, 19424, 60699, 6716, 24348, 22618, 23904, 21327,
  3919, 44703, 19149, 28803, 48959, 6259, 50273, 62237, 42
};

/* This equals 1525 * 2^16 + 57600 */
static const LITTLENUM_TYPE plus_4[] = {
  57600, 1525
};

/* This approaches 1e-16 */
static const LITTLENUM_TYPE minus_5[] = {
  22199, 45957, 17005, 26266, 10526, 16260, 55017, 35680, 40443, 19789,
  17356, 30195, 55905, 28426, 63010, 44197, 1844
};

static const LITTLENUM_TYPE plus_5[] = {
  28609, 34546, 35
};

static const LITTLENUM_TYPE minus_6[] = {
  30926, 26518, 13110, 43018, 54982, 48258, 24658, 15209, 63366, 11929,
  20069, 43857, 60487, 51
};

static const LITTLENUM_TYPE plus_6[] = {
  61313, 34220, 16731, 11629, 1262
};

static const LITTLENUM_TYPE minus_7[] = {
  29819, 14733, 21490, 40602, 31315, 65186, 2695
};

static const LITTLENUM_TYPE plus_7[] = {
  7937, 49002, 60772, 28216, 38893, 55975, 63988, 59711, 20227, 24
};

static const LITTLENUM_TYPE minus_8[] = {
  27579, 64807, 12543, 794, 13907, 61297, 12013, 64360, 15961, 20566,
  24178, 15922, 59427, 110
};

static const LITTLENUM_TYPE plus_8[] = {
  15873, 11925, 39177, 991, 14589, 3861, 58415, 9076, 62956, 54223,
  56328, 50180, 45274, 48333, 32537, 42547, 9731, 59679, 590
};

static const LITTLENUM_TYPE minus_9[] = {
  11042, 8464, 58971, 63429, 6022, 63485, 5500, 53464, 47545, 50068,
  56988, 22819, 49708, 54493, 9920, 47667, 40409, 35764, 10383, 54466,
  32702, 17493, 32420, 34382, 22750, 20681, 12300
};

static const LITTLENUM_TYPE plus_9[] = {
  20678, 27614, 28272, 53066, 55311, 54677, 29038, 9906, 26288, 44486,
  13860, 7445, 54106, 15426, 21518, 25599, 29632, 52309, 61207, 26105,
  10482, 21948, 51191, 32988, 60892, 62574, 61390, 24540, 21495, 5
};

static const LITTLENUM_TYPE minus_10[] = {
  6214, 48771, 23471, 30163, 31763, 38013, 57001, 11770, 18263, 36366,
  20742, 45086, 56969, 53231, 37856, 55814, 38057, 15692, 46761, 8713,
  6102, 20083, 8269, 11839, 11571, 50963, 15649, 11698, 40675, 2308
};

static const LITTLENUM_TYPE plus_10[] = {
  63839, 36576, 45712, 44516, 37803, 29482, 4966, 30556, 37961, 23310,
  27070, 44972, 29507, 48257, 45209, 7494, 17831, 38728, 41577, 29443,
  36016, 7955, 35339, 35479, 36011, 14553, 49618, 5588, 25396, 28
};

static const LITTLENUM_TYPE minus_11[] = {
  16663, 56882, 61983, 7804, 36555, 32060, 34502, 1000, 14356, 21681,
  6605, 34767, 51411, 59048, 53614, 39850, 30079, 6496, 6846, 26841,
  40778, 19578, 59899, 44085, 54016, 24259, 11232, 21229, 21313, 81
};

static const LITTLENUM_TYPE plus_11[] = {
  92, 9054, 62707, 17993, 7821, 56838, 13992, 21321, 29637, 48426,
  42982, 38668, 49574, 28820, 18200, 18927, 53979, 16219, 37484, 2516,
  44642, 14665, 11587, 41926, 13556, 23956, 54320, 6661, 55766, 805
};

static const LITTLENUM_TYPE minus_12[] = {
  33202, 45969, 58804, 56734, 16482, 26007, 44984, 49334, 31007, 32944,
  44517, 63329, 47131, 15291, 59465, 2264, 23218, 11829, 59771, 38798,
  31051, 28748, 23129, 40541, 41562, 35108, 50620, 59014, 51817, 6613
};

static const LITTLENUM_TYPE plus_12[] = {
  10098, 37922, 58070, 7432, 10470, 63465, 23718, 62190, 47420, 7009,
  38443, 4587, 45596, 38472, 52129, 52779, 29012, 13559, 48688, 31678,
  41753, 58662, 10668, 36067, 29906, 56906, 21461, 46556, 59571, 9
};

static const LITTLENUM_TYPE minus_13[] = {
  45309, 27592, 37144, 34637, 34328, 41671, 34620, 24135, 53401, 22112,
  21576, 45147, 39310, 44051, 48572, 3676, 46544, 59768, 33350, 2323,
  49524, 61568, 3903, 36487, 36356, 30903, 14975, 9035, 29715, 667
};

static const LITTLENUM_TYPE plus_13[] = {
  18788, 16960, 6318, 45685, 55400, 46230, 35794, 25588, 7253, 55541,
  49716, 59760, 63592, 8191, 63765, 58530, 44667, 13294, 10001, 55586,
  47887, 18738, 9509, 40896, 42506, 52580, 4171, 325, 12329, 98
};

/* Shut up complaints about differing pointer types.  They only differ
   in the const attribute, but there isn't any easy way to do this
   */
#define X (LITTLENUM_TYPE *)

const FLONUM_TYPE flonum_negative_powers_of_ten[] = {
  {X zero, X zero, X zero, 0, '+'},
  {X minus_1, X minus_1 + 19, X minus_1 + 19, -20, '+'},
  {X minus_2, X minus_2 + 19, X minus_2 + 19, -20, '+'},
  {X minus_3, X minus_3 + 19, X minus_3 + 19, -20, '+'},
  {X minus_4, X minus_4 + 18, X minus_4 + 18, -20, '+'},
  {X minus_5, X minus_5 + 16, X minus_5 + 16, -20, '+'},
  {X minus_6, X minus_6 + 13, X minus_6 + 13, -20, '+'},
  {X minus_7, X minus_7 + 6, X minus_7 + 6, -20, '+'},
  {X minus_8, X minus_8 + 13, X minus_8 + 13, -40, '+'},
  {X minus_9, X minus_9 + 26, X minus_9 + 26, -80, '+'},
  {X minus_10, X minus_10 + 29, X minus_10 + 29, -136, '+'},
  {X minus_11, X minus_11 + 29, X minus_11 + 29, -242, '+'},
  {X minus_12, X minus_12 + 29, X minus_12 + 29, -455, '+'},
  {X minus_13, X minus_13 + 29, X minus_13 + 29, -880, '+'},
};

const FLONUM_TYPE flonum_positive_powers_of_ten[] = {
  {X zero, X zero, X zero, 0, '+'},
  {X plus_1, X plus_1 + 0, X plus_1 + 0, 0, '+'},
  {X plus_2, X plus_2 + 0, X plus_2 + 0, 0, '+'},
  {X plus_3, X plus_3 + 0, X plus_3 + 0, 0, '+'},
  {X plus_4, X plus_4 + 1, X plus_4 + 1, 0, '+'},
  {X plus_5, X plus_5 + 2, X plus_5 + 2, 1, '+'},
  {X plus_6, X plus_6 + 4, X plus_6 + 4, 2, '+'},
  {X plus_7, X plus_7 + 9, X plus_7 + 9, 4, '+'},
  {X plus_8, X plus_8 + 18, X plus_8 + 18, 8, '+'},
  {X plus_9, X plus_9 + 29, X plus_9 + 29, 24, '+'},
  {X plus_10, X plus_10 + 29, X plus_10 + 29, 77, '+'},
  {X plus_11, X plus_11 + 29, X plus_11 + 29, 183, '+'},
  {X plus_12, X plus_12 + 29, X plus_12 + 29, 396, '+'},
  {X plus_13, X plus_13 + 29, X plus_13 + 29, 821, '+'},
};

#ifdef VMS
void
dummy1 ()
{
}
#endif