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//
// $Id$
//
// 
//--------------------------------------------------------------------
//      GEANT 4 class header file
//
//  G4PhysicsLnVector.hh
//
//  Class description:
//
//    A physics vector which has values of energy-loss, cross-section, 
//    and other physics values of a particle in matter in a given 
//    range of the energy, momentum, etc. The scale of energy/momentum
//    bins is natural logarithmic.
//
//  History:
//    27 Apr. 1999, M.G. Pia: Created, copying from G4PhysicsLogVector 
//    11 Nov. 2000, H.Kurashige : Use STL vector for dataVector and binVector
//    16 Aug. 2011  H.Kurashige : Move dBin, baseBin to the base class
//
//--------------------------------------------------------------------

#ifndef G4PhysicsLnVector_h
#define G4PhysicsLnVector_h 1

#include "globals.hh"
#include "G4PhysicsVector.hh"

class G4PhysicsLnVector : public G4PhysicsVector  
{
  public:

    G4PhysicsLnVector();
    explicit G4PhysicsLnVector(size_t theNbin);
      // Constructors

  public: // with description

    G4PhysicsLnVector(G4double theEmin, G4double theEmax, size_t theNbin);
      // Because of logarithmic scale, note that 'theEmin' has to be 
      // greater than zero. No protection exists against this error.

    ~G4PhysicsLnVector();
      // Destructor.

    virtual G4bool Retrieve(std::ifstream& fIn, G4bool ascii);
      // To retrieve persistent data from file stream.

    virtual void ScaleVector(G4double factorE, G4double factorV);
      // Scale all values of the vector and second derivatives
      // by factorV, energies by vectorE. 

  protected:

    virtual size_t FindBinLocation(G4double theEnergy) const;
      // Find bin# in which theEnergy belongs - pure virtual function.
};

#endif