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// $Id: G4CascadeMomentum.hh,v 1.1 2008/09/22 10:06:32 gcosmo Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
//
// Class G4CascadeMomentum
//
// Class description:
//
// A simple wrapper class meant to replace the widespread use of
// std::vector<double> in the cascade mode code, which causes
// problems for performance due to excess memory allocations.

// Author: Peter Elmer, Princeton University                  7-Aug-2008
// --------------------------------------------------------------------
#ifndef G4CASCADE_MOMENTUM_HH
#define G4CASCADE_MOMENTUM_HH

#include <cassert>

#include "G4Types.hh"

class G4CascadeMomentum
{
  public:

    G4CascadeMomentum() {for (int i=0; i<4; ++i) data_[i]=0.0;}

    G4double& operator[](int i)
    {
      assert(i>=0 && i<4);
      return data_[i];
    }
    const G4double& operator[](int i) const
    {
      assert(i>=0 && i<4);
      return data_[i];
    }

  private:

    G4double data_[4];
};
#endif

