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/**
\file nfw_int.hpp
\brief NFW_INT model
\author Junhua Gu
*/
#ifndef NFW_INT_MODEL_H_
#define NFW_INT_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <cmath>
#include <misc/optvec.hpp>
namespace opt_utilities
{
template <typename T>
class nfw_int
:public model<optvec<T>,optvec<T>,optvec<T>,std::string>
{
private:
nfw_int* do_clone()const
{
return new nfw_int<T>(*this);
}
const char* do_get_type_name()const
{
return "nfw_int mass profile";
}
public:
nfw_int()
{
this->push_param_info(param_info<optvec<T> >("rho0",1));
this->push_param_info(param_info<optvec<T> >("rs",1));
}
optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
{
T rho0=get_element(param,0);
T rs=get_element(param,1);
return 4*3.1415926*rho0*rs*rs*rs*(std::log((x+rs)/rs)-x/(x+rs));
}
private:
std::string do_get_information()const
{
return "integrated NFW mass profile\n"
"y=rho0/(x/rs*(1+x/rs)^2)\n";
}
};
}
#endif
//EOF
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