File : s-gccdiv.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S Y S T E M . G C C . D I V I S I O N S --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 2013, 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 -- --
19 -- --
20 -- --
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 -- Ada implementation of libgcc: 64-bit Divisions
33 pragma Restrictions (No_Elaboration_Code);
34
35 package System.GCC.Divisions is
36 pragma Pure;
37
38 function Udivdi3 (Num : Unsigned_64; Den : Unsigned_64) return Unsigned_64;
39 pragma Export (C, Udivdi3, "__udivdi3");
40 -- Unsigned division. Raise CE if Den is 0.
41
42 function Umoddi3 (Num : Unsigned_64; Den : Unsigned_64) return Unsigned_64;
43 pragma Export (C, Umoddi3, "__umoddi3");
44 -- Unsigned remainder
45
46 function Divdi3 (Num : Integer_64; Den : Integer_64) return Integer_64;
47 pragma Export (C, Divdi3, "__divdi3");
48 -- Signed division, without checking overflows
49
50 function Moddi3 (Num : Integer_64; Den : Integer_64) return Integer_64;
51 pragma Export (C, Moddi3, "__moddi3");
52 -- Unsigned remainder. This implements the Ada 'rem' operator, without
53 -- checking overflows.
54 end System.GCC.Divisions;