ROOT_528-00b_version: include/TRandom3.h Source File

00001 // @(#)root/mathcore:$Id: TRandom3.h 22866 2008-03-27 15:32:50Z rdm $
00002 // Author: Peter Malzacher   31/08/99
00003 
00004 /*************************************************************************
00005  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
00006  * All rights reserved.                                                  *
00007  *                                                                       *
00008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
00009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
00010  *************************************************************************/
00011 
00012 #ifndef ROOT_TRandom3
00013 #define ROOT_TRandom3
00014 
00015 
00016 
00017 //////////////////////////////////////////////////////////////////////////
00018 //                                                                      //
00019 // TRandom3                                                             //
00020 //                                                                      //
00021 // random number generator class: Mersenne Twistor                      //
00022 //                                                                      //
00023 //////////////////////////////////////////////////////////////////////////
00024 
00025 #ifndef ROOT_TRandom
00026 #include "TRandom.h"
00027 #endif
00028 
00029 class TRandom3 : public TRandom {
00030 
00031 private:
00032    UInt_t   fMt[624];
00033    Int_t    fCount624;
00034 
00035 public:
00036    TRandom3(UInt_t seed=4357);
00037    virtual ~TRandom3();
00038    virtual  Double_t  Rndm(Int_t i=0);
00039    virtual  void      RndmArray(Int_t n, Float_t *array);
00040    virtual  void      RndmArray(Int_t n, Double_t *array);
00041    virtual  void      SetSeed(UInt_t seed=0);
00042 
00043    ClassDef(TRandom3,2)  //Random number generator: Mersenne Twistor
00044 };
00045 
00046 R__EXTERN TRandom *gRandom;
00047 
00048 #endif