/**
   \file lin1d.hpp
   \brief 1d linear model
   \author Junhua Gu
 */


#ifndef LINEAR_MODEL_H_
#define LINEAR_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <core/pre_estimater.hpp>
#include <cmath>

namespace opt_utilities
{
  template <typename T>
  class lin1d
    :public model<T,T,std::vector<T>,std::string>
    ,public pre_estimatable<T,T,std::vector<T>,std::string>
  {
  private:
    model<T,T,std::vector<T> >* do_clone()const
    {
      return new lin1d<T>(*this);
    }

    const char* do_get_type_name()const
    {
      return "1d linear model";
    }
  public:
    lin1d()
    {
      this->push_param_info(param_info<std::vector<T> >("k",1));
      this->push_param_info(param_info<std::vector<T> >("b",0));
    }

  public:
    T do_eval(const T& x,const std::vector<T>& param)
    {
      return x*get_element(param,0)+get_element(param,1);
    }

  private:
    std::string do_get_information()const
    {
      return "<math><mrow> <mtext>f(x;k,b)=k x+b</mtext>		\
    </mrow>								\
</math>";
    }
  };
}



#endif
//EOF