EvtCGCoefSingle.hh

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 2000      Caltech, UCSB
//
// Module: EvtGen/EvtCGCoefSingle.hh
//
// Description:Evaluation of Clebsch-Gordon coef for a fixed j1 and j2.
//
// Modification history:
//
//    RYD      August 12, 2000         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTCGCOEFSINGLE_HH
#define EVTCGCOEFSINGLE_HH
 
#include <vector>
 
class EvtCGCoefSingle {
 
public:
  EvtCGCoefSingle( int j1, int j2 ) { init( j1, j2 ); }
  ~EvtCGCoefSingle();
 
  double coef( int J, int M, int j1, int j2, int m1, int m2 );
 
private:
  void    init( int j1, int j2 );
  double& cg( int J, int M, int m1, int m2 );
 
  int _j1;
  int _j2;
 
  int _Jmax;
  int _Jmin;
 
  std::vector<std::vector<std::vector<double>>> _table;
};
 
#endif