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/**
\file dbeta1d.hpp
\brief double beta model
\author Junhua Gu
*/
#ifndef DBETA_MODEL_H_
#define DBETA_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <cmath>
#include <iostream>
namespace opt_utilities
{
template <typename T>
class dbeta1d
:public model<T,T,std::vector<T>,std::string>
{
private:
model<T,T,std::vector<T> >* do_clone()const
{
return new dbeta1d<T>(*this);
}
const char* do_get_type_name()const
{
return "1d double beta model";
}
public:
dbeta1d()
{
this->push_param_info(param_info<std::vector<T> >("S01",1));
this->push_param_info(param_info<std::vector<T> >("rc1",30));
this->push_param_info(param_info<std::vector<T> >("beta1",.6));
this->push_param_info(param_info<std::vector<T> >("S02",.5));
this->push_param_info(param_info<std::vector<T> >("rc2",20));
this->push_param_info(param_info<std::vector<T> >("beta2",.4));
this->push_param_info(param_info<std::vector<T> >("bkg",0));
}
T do_eval(const T& x,const std::vector<T>& param)
{
T S01=get_element(param,0);
T r_c1=get_element(param,1);
T beta1=get_element(param,2);
T S02=get_element(param,3);
T r_c2=get_element(param,4);
T beta2=get_element(param,5);
T bkg=get_element(param,6);
return bkg+S01*pow(1+(x*x)/(r_c1*r_c1),-3*beta1+static_cast<T>(.5))
+S02*pow(1+(x*x)/(r_c2*r_c2),-3*beta2+static_cast<T>(.5));
}
private:
std::string do_get_information()const
{
return "double 1d beta model\n"
"S=beta(S01,beta1,rc1)+beta(S02,beta2,rc2)\n";
}
};
}
#endif
//EOF
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