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#ifndef BREMSS_MODEL_H_
#define BREMSS_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <cmath>
namespace opt_utilities
{
template <typename T>
class bremss
:public model<T,T,std::vector<T>,std::string>
{
private:
model<T,T,std::vector<T> >* do_clone()const
{
return new bremss<T>(*this);
}
public:
bremss()
{
this->push_param_info(param_info<std::vector<T> >("norm",1));
this->push_param_info(param_info<std::vector<T> >("kT",1));
}
T do_eval(const T& x,const std::vector<T>& param)
{
T norm=get_element(param,0);
T kT=get_element(param,1);
return norm*sqrt(kT)*exp(-x/kT);
}
private:
std::string do_to_string()const
{
return "Simplified bremss model\n"
"flux=norm*kT^0.5*e^{-E/kT}\n";
}
};
}
#endif
//EOF
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