integrator2d.h

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//
// APFEL++ 2017
//
// Author: Valerio Bertone: valerio.bertone@cern.ch
//
 
#pragma once
 
#include "apfel/integrator.h"
 
namespace apfel
{
  class Integrator2D
  {
  public:
 
    Integrator2D(std::function<double(double const&, double const&)> const& func, Integrator::IntegrationMethod const& method = Integrator::GAUSS_KRONROD);
 
    double integrate(double const& xmin, double const& xmax, double const& ymin, double const& ymax, double const& eps) const;
 
    std::pair<double, double> integrateGL(double const& xmin, double const& xmax, double const& ymin, double const& ymax) const;
 
    std::pair<double, double> integrateGK(double const& xmin, double const& xmax, double const& ymin, double const& ymax) const;
 
    double integrand(double const& x, double const& y) const { return _func(x, y); };
 
  private:
    std::function<double(double const&, double const&)> const _func;   
    Integrator::IntegrationMethod                       const _method; 
  };
}