gcc/ada/libgnat/s-valllf.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                       S Y S T E M . V A L _ L L F                        --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --            Copyright (C) 2020-2023, Free Software Foundation, Inc.       --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This package contains routines for scanning real values for floating point
  33 --  type Long_Long_Float, for use in Text_IO.Float_IO and the Value attribute.
  34
  35 with System.Powten_LLF;
  36 with System.Unsigned_Types;
  37 with System.Val_Real;
  38
  39 package System.Val_LLF is
  40    pragma Preelaborate;
  41
  42    package Impl is new Val_Real
  43      (Long_Long_Float,
  44       System.Powten_LLF.Maxpow,
  45       System.Powten_LLF.Powfive'Address,
  46       System.Powten_LLF.Powfive_100'Address,
  47       System.Powten_LLF.Powfive_200'Address,
  48       System.Powten_LLF.Powfive_300'Address,
  49       System.Unsigned_Types.Long_Long_Unsigned);
  50
  51    function Scan_Long_Long_Float
  52      (Str : String;
  53       Ptr : not null access Integer;
  54       Max : Integer) return Long_Long_Float
  55      renames Impl.Scan_Real;
  56
  57    function Value_Long_Long_Float (Str : String) return Long_Long_Float
  58      renames Impl.Value_Real;
  59
  60 end System.Val_LLF;