|
111
|
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 -- --
|
|
145
|
9 -- Copyright (C) 1992-2019, Free Software Foundation, Inc. --
|
|
111
|
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 package body Ada.Numerics.Discrete_Random with
|
|
|
33 SPARK_Mode => Off
|
|
|
34 is
|
|
|
35
|
|
|
36 package SRN renames System.Random_Numbers;
|
|
|
37 use SRN;
|
|
|
38
|
|
|
39 -----------
|
|
|
40 -- Image --
|
|
|
41 -----------
|
|
|
42
|
|
|
43 function Image (Of_State : State) return String is
|
|
|
44 begin
|
|
|
45 return Image (SRN.State (Of_State));
|
|
|
46 end Image;
|
|
|
47
|
|
|
48 ------------
|
|
|
49 -- Random --
|
|
|
50 ------------
|
|
|
51
|
|
|
52 function Random (Gen : Generator) return Result_Subtype is
|
|
|
53 function Random is
|
|
|
54 new SRN.Random_Discrete (Result_Subtype, Result_Subtype'First);
|
|
|
55 begin
|
|
|
56 return Random (SRN.Generator (Gen));
|
|
|
57 end Random;
|
|
|
58
|
|
|
59 -----------
|
|
|
60 -- Reset --
|
|
|
61 -----------
|
|
|
62
|
|
|
63 procedure Reset (Gen : Generator) is
|
|
|
64 begin
|
|
|
65 Reset (SRN.Generator (Gen));
|
|
|
66 end Reset;
|
|
|
67
|
|
|
68 procedure Reset (Gen : Generator; Initiator : Integer) is
|
|
|
69 begin
|
|
|
70 Reset (SRN.Generator (Gen), Initiator);
|
|
|
71 end Reset;
|
|
|
72
|
|
|
73 procedure Reset (Gen : Generator; From_State : State) is
|
|
|
74 begin
|
|
|
75 Reset (SRN.Generator (Gen), SRN.State (From_State));
|
|
|
76 end Reset;
|
|
|
77
|
|
|
78 ----------
|
|
|
79 -- Save --
|
|
|
80 ----------
|
|
|
81
|
|
|
82 procedure Save (Gen : Generator; To_State : out State) is
|
|
|
83 begin
|
|
|
84 Save (SRN.Generator (Gen), SRN.State (To_State));
|
|
|
85 end Save;
|
|
|
86
|
|
|
87 -----------
|
|
|
88 -- Value --
|
|
|
89 -----------
|
|
|
90
|
|
|
91 function Value (Coded_State : String) return State is
|
|
|
92 begin
|
|
|
93 return State (SRN.State'(Value (Coded_State)));
|
|
|
94 end Value;
|
|
|
95
|
|
|
96 end Ada.Numerics.Discrete_Random;
|
