------------------------------------------------------------------------------
--                                                                          --
--                         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;
