gcc/ada/libgnat/s-fofi64.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                 S Y S T E M . F O R E _ F I X E D _ 6 4                  --
   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 the routine used for the 'Fore attribute for ordinary
  33 --  fixed point types up to 64-bit small and mantissa.
  34
  35 with Interfaces;
  36 with System.Arith_64;
  37 with System.Fore_F;
  38
  39 package System.Fore_Fixed_64 is
  40    pragma Pure;
  41
  42    subtype Int64 is Interfaces.Integer_64;
  43
  44    package Impl is new Fore_F (Int64, Arith_64.Scaled_Divide64);
  45
  46    function Fore_Fixed64
  47      (Lo, Hi, Num, Den : Int64; Scale : Integer) return Natural
  48      renames Impl.Fore_Fixed;
  49
  50 end System.Fore_Fixed_64;