| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- 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 -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2010, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Note: the implementation used in this package is a version of the |
| -- Mersenne Twister. See s-rannum.adb for details and references. |
| |
| with System.Random_Numbers; |
| |
| generic |
| type Result_Subtype is (<>); |
| |
| package Ada.Numerics.Discrete_Random is |
| |
| -- Basic facilities |
| |
| type Generator is limited private; |
| |
| function Random (Gen : Generator) return Result_Subtype; |
| |
| procedure Reset (Gen : Generator; Initiator : Integer); |
| procedure Reset (Gen : Generator); |
| |
| -- Advanced facilities |
| |
| type State is private; |
| |
| procedure Save (Gen : Generator; To_State : out State); |
| procedure Reset (Gen : Generator; From_State : State); |
| |
| Max_Image_Width : constant := System.Random_Numbers.Max_Image_Width; |
| |
| function Image (Of_State : State) return String; |
| function Value (Coded_State : String) return State; |
| |
| private |
| |
| type Generator is new System.Random_Numbers.Generator; |
| |
| type State is new System.Random_Numbers.State; |
| |
| end Ada.Numerics.Discrete_Random; |
