flonum-const.c   [plain text]

/* flonum_const.c - Useful Flonum constants
   Copyright (C) 1987 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#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 = 11;

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 [] = {
 39321, 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 [] = {
 10485, 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 [] = {
 52533, 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 [] = {
 22516, 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 [] = {
 45849, 19069, 18068, 36324, 37948, 48745, 10873, 64360, 15961, 20566,
 24178, 15922, 59427,   110                                           };
static const LITTLENUM_TYPE plus_8 [] = {
 15873, 11925, 39177,   991, 14589, 19735, 25347, 65086, 53853,  938,
 37209, 47086, 33626, 23253, 32586, 42547,  9731, 59679,  590         };

static const LITTLENUM_TYPE minus_9 [] = {
 63601, 55221, 43562, 33661, 29067, 28203, 65417, 64352, 22462, 41110,
 12570, 28635, 23199, 50572, 28471, 27074, 46375, 64028, 13106, 63700,
 32698, 17493, 32420, 34382, 22750, 20681, 12300                      };
static const LITTLENUM_TYPE plus_9 [] = {
 63564, 61556, 29377, 54467, 18621, 28141, 36415, 61241, 47119, 30026,
 19740, 46002, 13541, 61413, 30480, 38664, 32205, 50593, 51112, 48904,
 48263, 43814,   286, 30826, 52813, 62575, 61390, 24540, 21495,     5 };

static const LITTLENUM_TYPE minus_10 [] = {
 50313, 34681,  1464, 25889, 19575, 41125, 17635,  4598, 49708, 13427,
 17287, 56115, 53783, 38255, 32415, 17778, 31596,  7557, 20951, 18477,
 40353,  1178, 44405, 11837, 11571, 50963, 15649, 11698, 40675,  2308,  };
static const LITTLENUM_TYPE plus_10[] = {
18520, 53764, 54535, 61910, 61962, 59843, 46270, 58053, 12473, 63785,
 2449, 43230, 50044, 47595, 10403, 35766, 32607,  1124, 24966, 35044,
25524, 23631, 18826, 14518, 58448, 14562, 49618,  5588, 25396,    28 };

static const LITTLENUM_TYPE minus_11 [] = {
  6223, 59909, 62437, 59960, 14652, 45336, 48800,  7647, 51962, 37982,
 60436, 58176, 26767,  8440,  9831, 48556, 20994, 14148,  6757, 17221,
 60624, 46129, 53210, 44085, 54016, 24259, 11232, 21229, 21313,    81,  };
static const LITTLENUM_TYPE plus_11 [] = {
 36159,  2055, 33615, 61362, 23581, 62454,  9748, 15275, 39284, 58636,
 16269, 42793, 47240, 45774, 50861, 48400,  9413, 40281,  4030,  9572,
  7984, 33038, 59522, 19450, 40593, 24486, 54320,  6661, 55766,   805,  };

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

const const_FLONUM_TYPE flonum_positive_powers_of_ten [] = {
  {zero,	zero,		zero,		  0, '+'},
  {plus_1,	plus_1  +  0,	plus_1  +  0,	  0, '+'},
  {plus_2,	plus_2  +  0,	plus_2  +  0,	  0, '+'},
  {plus_3,	plus_3  +  0,	plus_3  +  0,	  0, '+'},
  {plus_4,	plus_4  +  1,	plus_4  +  1,	  0, '+'},
  {plus_5,	plus_5  +  2,	plus_5  +  2,	  1, '+'},
  {plus_6,	plus_6  +  4,	plus_6  +  4,	  2, '+'},
  {plus_7,	plus_7  +  9,	plus_7  +  9,	  4, '+'},
  {plus_8,	plus_8	+ 18,	plus_8	+ 18,	  8, '+'},
  {plus_9,	plus_9  + 29,	plus_9	+ 29,	 24, '+'},
  {plus_10,	plus_10 + 29,	plus_10 + 29,	 77, '+'},
  {plus_11,	plus_11 + 29,	plus_11 + 29,	183, '+'},
};
/* end: flonum_const.c */