fitting.h

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#pragma once
#include <functional>
#include <vector>
 
namespace LIBRPA
{
 
namespace utils
{
 
struct LevMarqFitting
{
    int    d_maxiter;
    double d_init_lambda;
    double d_up_factor;
    double d_down_factor;
    double d_target_derr;
 
    int    d_final_it;
    double d_final_err;
    double d_final_derr;
 
    // default constructor
    LevMarqFitting();
    // destructor
    ~LevMarqFitting() {};
    // copy & move constructor
    LevMarqFitting(const LevMarqFitting& s) = delete;
    LevMarqFitting(LevMarqFitting&& s) = delete;
    // copy & move assignment operator
    LevMarqFitting& operator=(const LevMarqFitting& s) = delete;
    LevMarqFitting& operator=(LevMarqFitting&& s) = delete;
 
 
    void fit(std::vector<double> &pars, const std::vector<double> &xs,
             const std::vector<double> &ys,
             const std::function<double(double, const std::vector<double> &)> &func,
             const std::function<void(std::vector<double> &, double, const std::vector<double> &)> &grad);
 
    std::vector<double> fit_eval(std::vector<double> &pars, const std::vector<double> &xs,
                  const std::vector<double> &ys,
                  const std::function<double(double, const std::vector<double> &)> &func,
                  const std::function<void(std::vector<double> &, double, const std::vector<double> &)> &grad,
                  const std::vector<double> &xs_eval);
};
 
} /* end of namespace utils */
 
} /* end of namespace LIBRPA */