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File indexing completed on 2021-07-30 02:33:12

0001 #ifndef JetMETCorrections_FFTJetObjects_AbsFFTJetScaleCalculator_h
0002 #define JetMETCorrections_FFTJetObjects_AbsFFTJetScaleCalculator_h
0003 
0004 #include "JetMETCorrections/InterpolationTables/interface/AbsMultivariateFunctor.h"
0005 
0006 #include <memory>
0007 #include <vector>
0008 
0009 template <class Jet, class Adjustable>
0010 class AbsFFTJetScaleCalculator {
0011 public:
0012   typedef Jet jet_type;
0013   typedef Adjustable adjustable_type;
0014 
0015   inline explicit AbsFFTJetScaleCalculator(std::shared_ptr<npstat::AbsMultivariateFunctor> f)
0016       : functor(f), buffer_(f->minDim()) {}
0017   AbsFFTJetScaleCalculator() = delete;
0018 
0019   inline virtual ~AbsFFTJetScaleCalculator() {}
0020 
0021   inline double scale(const Jet& jet, const Adjustable& current) const {
0022     const unsigned dim = buffer_.size();
0023     double* buf = dim ? &buffer_[0] : static_cast<double*>(nullptr);
0024     this->map(jet, current, buf, dim);
0025     return (*functor)(buf, dim);
0026   }
0027 
0028 private:
0029   virtual void map(const Jet& jet, const Adjustable& current, double* buf, unsigned dim) const = 0;
0030 
0031   std::shared_ptr<npstat::AbsMultivariateFunctor> functor;
0032   mutable std::vector<double> buffer_;
0033 };
0034 
0035 #endif  // JetMETCorrections_FFTJetObjects_AbsFFTJetScaleCalculator_h