1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                      S Y S T E M . A R I T H _ 6 4                       --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2021, 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
32with System.Arith_Double;
33
34package body System.Arith_64
35  with SPARK_Mode
36is
37
38   subtype Uns64 is Interfaces.Unsigned_64;
39   subtype Uns32 is Interfaces.Unsigned_32;
40
41   use Interfaces;
42
43   package Impl is new Arith_Double (Int64, Uns64, Uns32);
44
45   function Add_With_Ovflo_Check64 (X, Y : Int64) return Int64
46     renames Impl.Add_With_Ovflo_Check;
47
48   function Subtract_With_Ovflo_Check64 (X, Y : Int64) return Int64
49     renames Impl.Subtract_With_Ovflo_Check;
50
51   function Multiply_With_Ovflo_Check64 (X, Y : Int64) return Int64
52     renames Impl.Multiply_With_Ovflo_Check;
53
54   procedure Scaled_Divide64
55     (X, Y, Z : Int64;
56      Q, R    : out Int64;
57      Round   : Boolean)
58     renames Impl.Scaled_Divide;
59
60   procedure Double_Divide64
61     (X, Y, Z : Int64;
62      Q, R    : out Int64;
63      Round   : Boolean)
64     renames Impl.Double_Divide;
65
66end System.Arith_64;
67