1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . N U M E R I C S . F L O A T _ R A N D O M --
9 -- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 package body Ada.Numerics.Float_Random is
34 package SRN renames System.Random_Numbers;
41 function Image (Of_State : State) return String is
43 return Image (SRN.State (Of_State));
50 function Random (Gen : Generator) return Uniformly_Distributed is
52 return Random (SRN.Generator (Gen));
59 -- Version that works from calendar
61 procedure Reset (Gen : Generator) is
63 Reset (SRN.Generator (Gen));
66 -- Version that works from given initiator value
68 procedure Reset (Gen : Generator; Initiator : Integer) is
70 Reset (SRN.Generator (Gen), Initiator);
73 -- Version that works from specific saved state
75 procedure Reset (Gen : Generator; From_State : State) is
77 Reset (SRN.Generator (Gen), From_State);
84 procedure Save (Gen : Generator; To_State : out State) is
86 Save (SRN.Generator (Gen), To_State);
93 function Value (Coded_State : String) return State is
97 Reset (G, Coded_State);
102 end Ada.Numerics.Float_Random;