GridParameters.h

Go to the documentation of this file.

/*
 *  CepGen: a central exclusive processes event generator
 *  Copyright (C) 2013-2023  Laurent Forthomme
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef CepGen_Integration_GridParameters_h
#define CepGen_Integration_GridParameters_h
 
#include <cstddef>
#include <vector>
 
namespace cepgen {
  class Integrator;
  class GridParameters {
  public:
    explicit GridParameters(size_t mbin, size_t ndim);
 
    typedef std::vector<unsigned short> coord_t;  
 
    void dump() const;  
 
    inline size_t size() const { return coords_.size(); }  
    inline const coord_t& n(size_t coord) const { return coords_.at(coord); }
    inline float globalMax() const { return f_max_global_; }  
 
    inline float maxValue(size_t coord) const { return f_max_.at(coord); }
    inline double maxValueDiff() const { return f_max_diff_; }
    inline double maxHistValue() const { return f_max_old_; }
 
    void setValue(size_t, float);  
    void shoot(const Integrator* integ, size_t coord, std::vector<double>& out) const;
    inline size_t numPoints(size_t coord) const { return num_points_.at(coord); }
    inline void increment(size_t coord) { num_points_.at(coord)++; }
 
    inline bool prepared() const { return gen_prepared_; }                       
    inline void setPrepared(bool prepared = true) { gen_prepared_ = prepared; }  
 
    inline float correctionValue() const { return correc_; }
    inline void setCorrectionValue(float correc) { correc_ = correc; }
    bool correct(size_t);  
 
    void rescale(size_t, float);
    void initCorrectionCycle(size_t, float);
 
  private:
    void generateCoordinates(coord_t&, size_t) const;
 
    const size_t mbin_;         
    const double inv_mbin_;     
    size_t ndim_{0};            
    bool gen_prepared_{false};  
    float correc_{0.};          
    float correc2_{0.};
    std::vector<coord_t> coords_;     
    std::vector<size_t> num_points_;  
    std::vector<float> f_max_;        
    float f_max_global_{0.};          
    float f_max2_{0.};
    float f_max_diff_{0.};
    float f_max_old_{0.};
  };
}  // namespace cepgen
 
#endif