------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
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------------------------------------------------------------------------------

--  This package provides a powers of ten table used for real conversions

package System.Powten_LLF is
   pragma Pure;

   Maxpow_Exact : constant :=
     (if Long_Long_Float'Machine_Mantissa = 64 then 27 else 22);
   --  Largest power of ten exactly representable with Long_Long_Float. It is
   --  equal to floor (M * log 2 / log 5), when M is the size of the mantissa
   --  assumed to be either 64 for IEEE Extended or 53 for IEEE Double.

   Maxpow : constant := Maxpow_Exact * 2;
   --  Largest power of ten exactly representable with a double Long_Long_Float

   Powten : constant array (0 .. 54, 1 .. 2) of Long_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_Long_Float'Machine (1.0E+23)),
      24 => (1.0E+24, 1.0E+24 - Long_Long_Float'Machine (1.0E+24)),
      25 => (1.0E+25, 1.0E+25 - Long_Long_Float'Machine (1.0E+25)),
      26 => (1.0E+26, 1.0E+26 - Long_Long_Float'Machine (1.0E+26)),
      27 => (1.0E+27, 1.0E+27 - Long_Long_Float'Machine (1.0E+27)),
      28 => (1.0E+28, 1.0E+28 - Long_Long_Float'Machine (1.0E+28)),
      29 => (1.0E+29, 1.0E+29 - Long_Long_Float'Machine (1.0E+29)),
      30 => (1.0E+30, 1.0E+30 - Long_Long_Float'Machine (1.0E+30)),
      31 => (1.0E+31, 1.0E+31 - Long_Long_Float'Machine (1.0E+31)),
      32 => (1.0E+32, 1.0E+32 - Long_Long_Float'Machine (1.0E+32)),
      33 => (1.0E+33, 1.0E+33 - Long_Long_Float'Machine (1.0E+33)),
      34 => (1.0E+34, 1.0E+34 - Long_Long_Float'Machine (1.0E+34)),
      35 => (1.0E+35, 1.0E+35 - Long_Long_Float'Machine (1.0E+35)),
      36 => (1.0E+36, 1.0E+36 - Long_Long_Float'Machine (1.0E+36)),
      37 => (1.0E+37, 1.0E+37 - Long_Long_Float'Machine (1.0E+37)),
      38 => (1.0E+38, 1.0E+38 - Long_Long_Float'Machine (1.0E+38)),
      39 => (1.0E+39, 1.0E+39 - Long_Long_Float'Machine (1.0E+39)),
      40 => (1.0E+40, 1.0E+40 - Long_Long_Float'Machine (1.0E+40)),
      41 => (1.0E+41, 1.0E+41 - Long_Long_Float'Machine (1.0E+41)),
      42 => (1.0E+42, 1.0E+42 - Long_Long_Float'Machine (1.0E+42)),
      43 => (1.0E+43, 1.0E+43 - Long_Long_Float'Machine (1.0E+43)),
      44 => (1.0E+44, 1.0E+44 - Long_Long_Float'Machine (1.0E+44)),
      45 => (1.0E+45, 1.0E+45 - Long_Long_Float'Machine (1.0E+45)),
      46 => (1.0E+46, 1.0E+46 - Long_Long_Float'Machine (1.0E+46)),
      47 => (1.0E+47, 1.0E+47 - Long_Long_Float'Machine (1.0E+47)),
      48 => (1.0E+48, 1.0E+48 - Long_Long_Float'Machine (1.0E+48)),
      49 => (1.0E+49, 1.0E+49 - Long_Long_Float'Machine (1.0E+49)),
      50 => (1.0E+50, 1.0E+50 - Long_Long_Float'Machine (1.0E+50)),
      51 => (1.0E+51, 1.0E+51 - Long_Long_Float'Machine (1.0E+51)),
      52 => (1.0E+52, 1.0E+52 - Long_Long_Float'Machine (1.0E+52)),
      53 => (1.0E+53, 1.0E+53 - Long_Long_Float'Machine (1.0E+53)),
      54 => (1.0E+54, 1.0E+54 - Long_Long_Float'Machine (1.0E+54)));

end System.Powten_LLF;