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1996-09-28
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3KB
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80 lines
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . P O W T E N _ T A B L E --
-- --
-- S p e c --
-- --
-- $Revision: 1.3 $ --
-- --
-- Copyright (c) 1992,1993,1994 NYU, All Rights Reserved --
-- --
-- The GNAT library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU Library General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) any --
-- later version. The GNAT library 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 --
-- Library General Public License for more details. You should have --
-- received a copy of the GNU Library General Public License along with --
-- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
-- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
-- This package provides a powers of ten table used for real conversions
package System.Powten_Table is
pragma Pure (Powten_Table);
-- The number of entries in this table is chosen to be large enough to
-- correspond to the number of decimal digits in a 128-bit integer. It
-- seems unlikely that Long_Long_Integer will have more than 128-bits
-- for some time to come!
Powten : constant array (0 .. 40) of Long_Long_Float :=
(00 => 1.0E+00,
01 => 1.0E+01,
02 => 1.0E+02,
03 => 1.0E+03,
04 => 1.0E+04,
05 => 1.0E+05,
06 => 1.0E+06,
07 => 1.0E+07,
08 => 1.0E+08,
09 => 1.0E+09,
10 => 1.0E+10,
11 => 1.0E+11,
12 => 1.0E+12,
13 => 1.0E+13,
14 => 1.0E+14,
15 => 1.0E+15,
16 => 1.0E+16,
17 => 1.0E+17,
18 => 1.0E+18,
19 => 1.0E+19,
20 => 1.0E+20,
21 => 1.0E+21,
22 => 1.0E+22,
23 => 1.0E+23,
24 => 1.0E+24,
25 => 1.0E+25,
26 => 1.0E+26,
27 => 1.0E+27,
28 => 1.0E+28,
29 => 1.0E+29,
30 => 1.0E+30,
31 => 1.0E+31,
32 => 1.0E+32,
33 => 1.0E+33,
34 => 1.0E+34,
35 => 1.0E+35,
36 => 1.0E+36,
37 => 1.0E+37,
38 => 1.0E+38,
39 => 1.0E+39,
40 => 1.0E+40);
end System.Powten_Table;