METOOLS/Main/Polarization_Index.H

0001 #ifndef METOOLS__Main__Polarization_Index_H
0002 #define METOOLS__Main__Polarization_Index_H
0003
0004 #include <vector>
0005 #include <cstddef>
0006 #include <string>
0007
0008 namespace METOOLS {
0009
0010   class Polarization_Index {
0011   protected:
0012
0013     /*!
0014       \brief vector containing the number of spin combinations for each particle "node".
0015     */
0016     std::vector<int> m_spins;
0017     std::string      m_id;
0018
0019     size_t m_n;
0020
0021   public:
0022
0023     inline Polarization_Index(): m_n(0) {}
0024     inline Polarization_Index(const std::vector<int> &spins) { Init(spins); }
0025
0026     void Init(const std::vector<int> &spins);
0027
0028     size_t operator()(const std::vector<int> &spins) const;
0029
0030     std::vector<int> operator()(size_t number) const;
0031
0032     inline const std::vector<int> &Spins() const { return m_spins; }
0033
0034     inline const std::string &SpinID() const { return m_id; }
0035
0036     inline size_t N() const { return m_n; }
0037
0038   };// end of class Polarization_Index
0039
0040 }// end of namespace METOOLS
0041
0042 #endif