EvtdFunctionSingle.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/EvtdFunction.hh
//
// Description:Evaluation of one Wigner d-Functions
//
// Modification history:
//
//    RYD      August 10, 2000         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTDFUNCTIONSINGLE_HH
#define EVTDFUNCTIONSINGLE_HH
 
class EvtdFunctionSingle {
 
public:
  EvtdFunctionSingle();
  ~EvtdFunctionSingle();
 
  void init( int j, int m1, int m2 );
 
  double d( int j, int m1, int m2, double theta );
 
private:
  int fact( int n );
 
  int _j;
  int _m1;
  int _m2;
 
  double* _coef;
 
  int _kmin;
  int _kmax;
};
 
#endif