1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                       S Y S T E M . B I G N U M S                        --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 2012-2019, 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
32with System.Generic_Bignums;
33with Ada.Unchecked_Conversion;
34
35package body System.Bignums is
36
37   package Sec_Stack_Bignums is new
38     System.Generic_Bignums (Use_Secondary_Stack => True);
39   use Sec_Stack_Bignums;
40
41   function "+" is new Ada.Unchecked_Conversion
42     (Bignum, Sec_Stack_Bignums.Bignum);
43
44   function "-" is new Ada.Unchecked_Conversion
45     (Sec_Stack_Bignums.Bignum, Bignum);
46
47   function Big_Add (X, Y : Bignum) return Bignum is
48     (-Sec_Stack_Bignums.Big_Add (+X, +Y));
49
50   function Big_Sub (X, Y : Bignum) return Bignum is
51     (-Sec_Stack_Bignums.Big_Sub (+X, +Y));
52
53   function Big_Mul (X, Y : Bignum) return Bignum is
54     (-Sec_Stack_Bignums.Big_Mul (+X, +Y));
55
56   function Big_Div (X, Y : Bignum) return Bignum is
57     (-Sec_Stack_Bignums.Big_Div (+X, +Y));
58
59   function Big_Exp (X, Y : Bignum) return Bignum is
60     (-Sec_Stack_Bignums.Big_Exp (+X, +Y));
61
62   function Big_Mod (X, Y : Bignum) return Bignum is
63     (-Sec_Stack_Bignums.Big_Mod (+X, +Y));
64
65   function Big_Rem (X, Y : Bignum) return Bignum is
66     (-Sec_Stack_Bignums.Big_Rem (+X, +Y));
67
68   function Big_Neg (X    : Bignum) return Bignum is
69     (-Sec_Stack_Bignums.Big_Neg (+X));
70
71   function Big_Abs (X    : Bignum) return Bignum is
72     (-Sec_Stack_Bignums.Big_Abs (+X));
73
74   function Big_EQ  (X, Y : Bignum) return Boolean is
75     (Sec_Stack_Bignums.Big_EQ (+X, +Y));
76   function Big_NE  (X, Y : Bignum) return Boolean is
77     (Sec_Stack_Bignums.Big_NE (+X, +Y));
78   function Big_GE  (X, Y : Bignum) return Boolean is
79     (Sec_Stack_Bignums.Big_GE (+X, +Y));
80   function Big_LE  (X, Y : Bignum) return Boolean is
81     (Sec_Stack_Bignums.Big_LE (+X, +Y));
82   function Big_GT  (X, Y : Bignum) return Boolean is
83     (Sec_Stack_Bignums.Big_GT (+X, +Y));
84   function Big_LT  (X, Y : Bignum) return Boolean is
85     (Sec_Stack_Bignums.Big_LT (+X, +Y));
86
87   function Bignum_In_LLI_Range (X : Bignum) return Boolean is
88     (Sec_Stack_Bignums.Bignum_In_LLI_Range (+X));
89
90   function To_Bignum (X : Long_Long_Integer) return Bignum is
91     (-Sec_Stack_Bignums.To_Bignum (X));
92
93   function From_Bignum (X : Bignum) return Long_Long_Integer is
94     (Sec_Stack_Bignums.From_Bignum (+X));
95
96end System.Bignums;
97