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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . N U M E R I C S . F L O A T _ R A N D O M --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
package body Ada.Numerics.Float_Random is
package SRN renames System.Random_Numbers;
use SRN;
-----------
-- Image --
-----------
function Image (Of_State : State) return String is
begin
return Image (SRN.State (Of_State));
end Image;
------------
-- Random --
------------
function Random (Gen : Generator) return Uniformly_Distributed is
begin
return Random (SRN.Generator (Gen));
end Random;
-----------
-- Reset --
-----------
-- Version that works from calendar
procedure Reset (Gen : Generator) is
begin
Reset (SRN.Generator (Gen));
end Reset;
-- Version that works from given initiator value
procedure Reset (Gen : Generator; Initiator : Integer) is
begin
Reset (SRN.Generator (Gen), Initiator);
end Reset;
-- Version that works from specific saved state
procedure Reset (Gen : Generator; From_State : State) is
begin
Reset (SRN.Generator (Gen), From_State);
end Reset;
----------
-- Save --
----------
procedure Save (Gen : Generator; To_State : out State) is
begin
Save (SRN.Generator (Gen), To_State);
end Save;
-----------
-- Value --
-----------
function Value (Coded_State : String) return State is
G : SRN.Generator;
S : SRN.State;
begin
Reset (G, Coded_State);
Save (G, S);
return State (S);
end Value;
end Ada.Numerics.Float_Random;
|
