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s-powtab
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1996-02-12
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4KB
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91 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: 1.5 $ --
-- --
-- Copyright (C) 1992,1993,1994,1995 Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
-- This package provides a powers of ten table used for real conversions
package System.Powten_Table is
pragma Pure (Powten_Table);
Maxpow : constant := 40;
-- 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;