1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--         A D A . N U M E R I C S . D I S C R E T E _ R A N D O M          --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2010, 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
32package body Ada.Numerics.Discrete_Random is
33
34   package SRN renames System.Random_Numbers;
35   use SRN;
36
37   -----------
38   -- Image --
39   -----------
40
41   function Image (Of_State : State) return String is
42   begin
43      return Image (SRN.State (Of_State));
44   end Image;
45
46   ------------
47   -- Random --
48   ------------
49
50   function Random (Gen : Generator) return Result_Subtype is
51      function Random is
52        new SRN.Random_Discrete (Result_Subtype, Result_Subtype'First);
53   begin
54      return Random (SRN.Generator (Gen));
55   end Random;
56
57   -----------
58   -- Reset --
59   -----------
60
61   procedure Reset (Gen : Generator) is
62   begin
63      Reset (SRN.Generator (Gen));
64   end Reset;
65
66   procedure Reset (Gen : Generator; Initiator : Integer) is
67   begin
68      Reset (SRN.Generator (Gen), Initiator);
69   end Reset;
70
71   procedure Reset (Gen : Generator; From_State : State) is
72   begin
73      Reset (SRN.Generator (Gen), SRN.State (From_State));
74   end Reset;
75
76   ----------
77   -- Save --
78   ----------
79
80   procedure Save (Gen : Generator; To_State   : out State) is
81   begin
82      Save (SRN.Generator (Gen), SRN.State (To_State));
83   end Save;
84
85   -----------
86   -- Value --
87   -----------
88
89   function Value (Coded_State : String) return State is
90   begin
91      return State (SRN.State'(Value (Coded_State)));
92   end Value;
93
94end Ada.Numerics.Discrete_Random;
95