/**
   \file constant.hpp
   \brief constant model
   \author Junhua Gu
 */


#ifndef VCONSTANT_MODEL_H_
#define VCONSTANT_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <misc/optvec.hpp>
#include <cmath>

namespace opt_utilities
{
  template <typename T>
  class constant
    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
  {
    typedef optvec<T> Tv;
  private:
    constant<T>* do_clone()const
    {
      return new constant<T>(*this);
    }
    const char* do_get_type_name()const
    {
      return "constant";
    }
  public:
    constant()
    {
      this->push_param_info(param_info<Tv>("c",1));
    }

  public:
    Tv do_eval(const Tv& x,const Tv& param)
    {
      //return x*param[0]+param[1];
      Tv result(x.size());
      for(int i=0;i<result.size();++i)
	{
	  result[i]=param[0];
	}
      return result;
    }

  private:
    std::string do_get_information()const
    {
#include <model_doc/constant.info>
      return "";
    }
  };
}



#endif
//EOF