| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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; |
