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

namespace opt_utilities
{
  template <typename T>
  class pl1d
    :public model<T,T,std::vector<T>,std::string>
  {
  private:
    model<T,T,std::vector<T> >* do_clone()const
    {
      return new pl1d<T>(*this);
    }
  public:
    pl1d()
    {
      this->push_param_info(param_info<std::vector<T> >("Ampl",1));
      this->push_param_info(param_info<std::vector<T> >("gamma",1));
    }

    T do_eval(const T& x,const std::vector<T>& param)
    {
      T A=get_element(param,0);
      T gamma=get_element(param,1);
      return A*pow(x,gamma);
    }

  private:
    std::string do_to_string()const
    {
      return "Simple power law model\n"
	"y=A*x^gamma\n";
    }
  };
}



#endif
//EOF