BackToBackKinematicConstraint.h

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#ifndef BackToBackKinematicConstraint_H
#define BackToBackKinematicConstraint_H
 
#include "RecoVertex/KinematicFitPrimitives/interface/KinematicConstraint.h"
 
class BackToBackKinematicConstraint : public KinematicConstraint {
public:
  BackToBackKinematicConstraint() {}
 
  ~BackToBackKinematicConstraint() override {}
 
  std::pair<AlgebraicVector, AlgebraicVector> value(const AlgebraicVector& exPoint) const override;
 
  std::pair<AlgebraicMatrix, AlgebraicVector> derivative(const AlgebraicVector& exPoint) const override;
 
  std::pair<AlgebraicVector, AlgebraicVector> value(const std::vector<RefCountedKinematicParticle>& par) const override;
 
  std::pair<AlgebraicMatrix, AlgebraicVector> derivative(
      const std::vector<RefCountedKinematicParticle>& par) const override;
 
  AlgebraicVector deviations(int nStates) const override;
 
  int numberOfEquations() const override;
 
  KinematicConstraint* clone() const override;
 
private:
};
#endif