ErrorMatrixPropagator.h

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#ifndef ErrorMatrixPropagator_h
#define ErrorMatrixPropagator_h

/* From SimpleFits Package
 * Designed an written by
 * author: Ian M. Nugent
 * Humboldt Foundations
 */
#include <functional>

#include "TMatrixT.h"
#include "TMatrixTSym.h"
#include "TVectorT.h"

namespace tauImpactParameter {

  class ErrorMatrixPropagator {
  public:
    ErrorMatrixPropagator(){};
    virtual ~ErrorMatrixPropagator(){};
    static TMatrixTSym<double> propagateError(std::function<TVectorT<double>(const TVectorT<double>&)> f,
                                              const TVectorT<double>& inPar,
                                              TMatrixTSym<double>& inCov,
                                              double epsilon = 0.001,
                                              double errorEpsilonRatio = 1000);
  };

}  // namespace tauImpactParameter
#endif