1178825Sdfr------------------------------------------------------------------------------ 2178825Sdfr-- -- 3178825Sdfr-- GNAT RUN-TIME COMPONENTS -- 4178825Sdfr-- -- 5178825Sdfr-- A D A . N U M E R I C S . F L O A T _ R A N D O M -- 6178825Sdfr-- -- 7178825Sdfr-- B o d y -- 8178825Sdfr-- -- 9178825Sdfr-- Copyright (C) 1992-2010, Free Software Foundation, Inc. -- 10178825Sdfr-- -- 11178825Sdfr-- GNAT is free software; you can redistribute it and/or modify it under -- 12178825Sdfr-- terms of the GNU General Public License as published by the Free Soft- -- 13178825Sdfr-- ware Foundation; either version 3, or (at your option) any later ver- -- 14178825Sdfr-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15178825Sdfr-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16178825Sdfr-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17178825Sdfr-- -- 18178825Sdfr-- As a special exception under Section 7 of GPL version 3, you are granted -- 19178825Sdfr-- additional permissions described in the GCC Runtime Library Exception, -- 20178825Sdfr-- version 3.1, as published by the Free Software Foundation. -- 21178825Sdfr-- -- 22178825Sdfr-- You should have received a copy of the GNU General Public License and -- 23178825Sdfr-- a copy of the GCC Runtime Library Exception along with this program; -- 24178825Sdfr-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25178825Sdfr-- <http://www.gnu.org/licenses/>. -- 26178825Sdfr-- -- 27178825Sdfr-- GNAT was originally developed by the GNAT team at New York University. -- 28178825Sdfr-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29178825Sdfr-- -- 30178825Sdfr------------------------------------------------------------------------------ 31178825Sdfr 32178825Sdfrpackage body Ada.Numerics.Float_Random is 33178825Sdfr 34178825Sdfr package SRN renames System.Random_Numbers; 35178825Sdfr use SRN; 36178825Sdfr 37178825Sdfr ----------- 38178825Sdfr -- Image -- 39178825Sdfr ----------- 40178825Sdfr 41178825Sdfr function Image (Of_State : State) return String is 42178825Sdfr begin 43178825Sdfr return Image (SRN.State (Of_State)); 44178825Sdfr end Image; 45178825Sdfr 46178825Sdfr ------------ 47178825Sdfr -- Random -- 48178825Sdfr ------------ 49178825Sdfr 50178825Sdfr function Random (Gen : Generator) return Uniformly_Distributed is 51178825Sdfr begin 52178825Sdfr return Random (SRN.Generator (Gen)); 53178825Sdfr end Random; 54178825Sdfr 55178825Sdfr ----------- 56178825Sdfr -- Reset -- 57178825Sdfr ----------- 58178825Sdfr 59178825Sdfr -- Version that works from calendar 60178825Sdfr 61178825Sdfr procedure Reset (Gen : Generator) is 62178825Sdfr begin 63178825Sdfr Reset (SRN.Generator (Gen)); 64178825Sdfr end Reset; 65178825Sdfr 66178825Sdfr -- Version that works from given initiator value 67178825Sdfr 68178825Sdfr procedure Reset (Gen : Generator; Initiator : Integer) is 69178825Sdfr begin 70178825Sdfr Reset (SRN.Generator (Gen), Initiator); 71178825Sdfr end Reset; 72178825Sdfr 73178825Sdfr -- Version that works from specific saved state 74178825Sdfr 75178825Sdfr procedure Reset (Gen : Generator; From_State : State) is 76178825Sdfr begin 77178825Sdfr Reset (SRN.Generator (Gen), From_State); 78178825Sdfr end Reset; 79178825Sdfr 80178825Sdfr ---------- 81178825Sdfr -- Save -- 82178825Sdfr ---------- 83178825Sdfr 84178825Sdfr procedure Save (Gen : Generator; To_State : out State) is 85178825Sdfr begin 86178825Sdfr Save (SRN.Generator (Gen), To_State); 87178825Sdfr end Save; 88178825Sdfr 89178825Sdfr ----------- 90178825Sdfr -- Value -- 91178825Sdfr ----------- 92178825Sdfr 93178825Sdfr function Value (Coded_State : String) return State is 94178825Sdfr G : SRN.Generator; 95178825Sdfr S : SRN.State; 96178825Sdfr begin 97178825Sdfr Reset (G, Coded_State); 98178825Sdfr Save (G, S); 99178825Sdfr return State (S); 100178825Sdfr end Value; 101178825Sdfr 102178825Sdfrend Ada.Numerics.Float_Random; 103178825Sdfr