FCN.h

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#pragma once

#include <Minuit2/FCNBase.h>

#include <vector>

#include <goofit/fitting/Params.h>

namespace GooFit {

class FCN : public Minuit2::FCNBase {
  protected:
    Params *params_;

  public:
    FCN(Params &params);

    double operator()(const std::vector<double> &pars) const override;

    double operator()() const;

    double Up() const override { return 0.5; }

    Params *GetParams();
};
} // namespace GooFit