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/**
\file lin1d.hpp
\brief linear
\author Junhua Gu
*/
#ifndef VRQUARTER_MODEL_H_
#define VRQUARTER_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <misc/optvec.hpp>
#include <cmath>
namespace opt_utilities
{
template <typename T>
class rquarter
:public model<optvec<T>,optvec<T>,optvec<T>,std::string>
{
typedef optvec<T> Tv;
private:
rquarter<T>* do_clone()const
{
return new rquarter<T>(*this);
}
const char* do_get_type_name()const
{
return "de Vaucoulurs 1/4 law";
}
public:
rquarter()
{
this->push_param_info(param_info<Tv>("I0",1));
this->push_param_info(param_info<Tv>("Re",10));
this->push_param_info(param_info<Tv>("bkg",0));
}
public:
Tv do_eval(const Tv& x,const Tv& param)
{
Tv result(x.size());
//return x*get_element(param,0)+get_element(param,1);
for(size_t i=0;i!=x.size();++i)
{
result[i]=param[0]*exp(-7.67*(pow(x[i]/param[1],.25)-T(1.)))+param[2];
}
return result;
}
private:
std::string do_get_information()const
{
#include <model_doc/rquarter.info>
return "";
}
};
}
#endif
//EOF
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