------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . P O W T E N _ L F L T -- -- -- -- S p e c -- -- -- -- Copyright (C) 2020-2022, 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 3, 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package provides a powers of ten table used for real conversions package System.Powten_LFlt is pragma Pure; Maxpow_Exact : constant := 22; -- Largest power of ten exactly representable with Long_Float. It is equal -- to floor (M * log 2 / log 5), when M is the size of the mantissa (53). Maxpow : constant := Maxpow_Exact * 2; -- Largest power of ten exactly representable with a double Long_Float Powten : constant array (0 .. Maxpow, 1 .. 2) of Long_Float := [00 => [1.0E+00, 0.0], 01 => [1.0E+01, 0.0], 02 => [1.0E+02, 0.0], 03 => [1.0E+03, 0.0], 04 => [1.0E+04, 0.0], 05 => [1.0E+05, 0.0], 06 => [1.0E+06, 0.0], 07 => [1.0E+07, 0.0], 08 => [1.0E+08, 0.0], 09 => [1.0E+09, 0.0], 10 => [1.0E+10, 0.0], 11 => [1.0E+11, 0.0], 12 => [1.0E+12, 0.0], 13 => [1.0E+13, 0.0], 14 => [1.0E+14, 0.0], 15 => [1.0E+15, 0.0], 16 => [1.0E+16, 0.0], 17 => [1.0E+17, 0.0], 18 => [1.0E+18, 0.0], 19 => [1.0E+19, 0.0], 20 => [1.0E+20, 0.0], 21 => [1.0E+21, 0.0], 22 => [1.0E+22, 0.0], 23 => [1.0E+23, 1.0E+23 - Long_Float'Machine (1.0E+23)], 24 => [1.0E+24, 1.0E+24 - Long_Float'Machine (1.0E+24)], 25 => [1.0E+25, 1.0E+25 - Long_Float'Machine (1.0E+25)], 26 => [1.0E+26, 1.0E+26 - Long_Float'Machine (1.0E+26)], 27 => [1.0E+27, 1.0E+27 - Long_Float'Machine (1.0E+27)], 28 => [1.0E+28, 1.0E+28 - Long_Float'Machine (1.0E+28)], 29 => [1.0E+29, 1.0E+29 - Long_Float'Machine (1.0E+29)], 30 => [1.0E+30, 1.0E+30 - Long_Float'Machine (1.0E+30)], 31 => [1.0E+31, 1.0E+31 - Long_Float'Machine (1.0E+31)], 32 => [1.0E+32, 1.0E+32 - Long_Float'Machine (1.0E+32)], 33 => [1.0E+33, 1.0E+33 - Long_Float'Machine (1.0E+33)], 34 => [1.0E+34, 1.0E+34 - Long_Float'Machine (1.0E+34)], 35 => [1.0E+35, 1.0E+35 - Long_Float'Machine (1.0E+35)], 36 => [1.0E+36, 1.0E+36 - Long_Float'Machine (1.0E+36)], 37 => [1.0E+37, 1.0E+37 - Long_Float'Machine (1.0E+37)], 38 => [1.0E+38, 1.0E+38 - Long_Float'Machine (1.0E+38)], 39 => [1.0E+39, 1.0E+39 - Long_Float'Machine (1.0E+39)], 40 => [1.0E+40, 1.0E+40 - Long_Float'Machine (1.0E+40)], 41 => [1.0E+41, 1.0E+41 - Long_Float'Machine (1.0E+41)], 42 => [1.0E+42, 1.0E+42 - Long_Float'Machine (1.0E+42)], 43 => [1.0E+43, 1.0E+43 - Long_Float'Machine (1.0E+43)], 44 => [1.0E+44, 1.0E+44 - Long_Float'Machine (1.0E+44)]]; end System.Powten_LFlt;