Extrapolator.h

// -*- C++ -*-
//
// This file is part of LHAPDF
// Copyright (C) 2012-2023 The LHAPDF collaboration (see AUTHORS for details)
//
#pragma once
#ifndef LHAPDF_Extrapolator_H
#define LHAPDF_Extrapolator_H
 
#include "LHAPDF/Utils.h"
 
namespace LHAPDF {
 
 
  // Forward declaration
  class GridPDF;
 
 
  class Extrapolator {
  public:
 
    virtual ~Extrapolator() { }
 
 
 
    void bind(const GridPDF* pdf) { _pdf = pdf; }
 
    void unbind() { _pdf = 0; }
 
    bool hasPDF() { return _pdf != 0; }
 
    const GridPDF& pdf() const { return *_pdf; }
 
 
 
 
    double extrapolateXQ(int id, double x, double q) const {
      return extrapolateXQ2(id, x, q*q );
    }
 
    virtual double extrapolateXQ2(int id, double x, double q2) const = 0;
 
 
 
 
 
  private:
 
    const GridPDF* _pdf;
 
  };
 
 
}
#endif