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// $Id: G4InclRandomNumbers.hh,v 1.8 2010/11/13 00:08:36 kaitanie Exp $
// Translation of INCL4.2/ABLA V3 
// Pekka Kaitaniemi, HIP (translation)
// Christelle Schmidt, IPNL (fission code)
// Alain Boudard, CEA (contact person INCL/ABLA)
// Aatos Heikkinen, HIP (project coordination)

#include "globals.hh"
#include "Randomize.hh"

#ifndef G4InclRandomNumbers_hh
#define G4InclRandomNumbers_hh 1

/**
 * Interface for the random number services.
 */
class G4InclRandomInterface {

public:
  G4InclRandomInterface() {
    this->seed = 1337; // Default seed, this is never actually used.
  }
  G4InclRandomInterface(G4long seed) {
    this->seed = seed;
  }

  virtual ~G4InclRandomInterface() { }

  /**
   * Provide evenly distributed random numbers.
   */
  virtual G4double getRandom() = 0;
  virtual void printSeeds() = 0;
private:
  G4long seed;
};

/**
 * Provides dummy random number generator that always produces one
 * number.
 */
class G4InclDummyRandom : public G4InclRandomInterface {

public:
  G4InclDummyRandom() { }

  ~G4InclDummyRandom() { }

  /**
   * Always return one "random" number. This interface is intended as
   * a debugging tool in order to produce some specific event.
   */
  G4double getRandom() {
    return 0.5;
  }

  void printSeeds() {};
};

/**
 * Interface to the Geant4 random number services.
 */
class G4InclGeant4Random : public G4InclRandomInterface {

public:
  G4InclGeant4Random() { }

  ~G4InclGeant4Random() { }

  /**
   * Always return one "random" number. This interface is intended as
   * a debugging tool in order to produce some specific event.
   */
  G4double getRandom() {
    return G4UniformRand();
  }

  void printSeeds() {
    G4cout <<"Using Geant4 random number generator." << G4endl;
  };
};

#endif
