1------------------------------------------------------------------------------
2--                                                                          --
3--                    GNAT RUN-TIME LIBRARY COMPONENTS                      --
4--                                                                          --
5--        S Y S T E M . C O M P A R E _ A R R A Y _ S I G N E D _ 6 4       --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 2002-2019, 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 functions for runtime comparisons on arrays whose
33--  elements are 64-bit discrete type values to be treated as signed.
34
35package System.Compare_Array_Signed_64 is
36
37   --  Note: although the functions in this package are in a sense Pure, the
38   --  package cannot be declared as Pure, since the arguments are addresses,
39   --  not the data, and the result is not pure wrt the address values.
40
41   function Compare_Array_S64
42     (Left      : System.Address;
43      Right     : System.Address;
44      Left_Len  : Natural;
45      Right_Len : Natural) return Integer;
46   --  Compare the array starting at address Left of length Left_Len
47   --  with the array starting at address Right of length Right_Len.
48   --  The comparison is in the normal Ada semantic sense of array
49   --  comparison. The result is -1,0,+1 for Left<Right, Left=Right,
50   --  Left>Right respectively.
51
52end System.Compare_Array_Signed_64;
53