QMcBeaver: ZeroCorrelationFunction.h Source File

00001 //            QMcBeaver
00002 //
00003 //         Constructed by 
00004 //
00005 //     Michael Todd Feldmann 
00006 //              and 
00007 //   David Randall "Chip" Kent IV
00008 //
00009 // Copyright 2000.  All rights reserved.
00010 //
00011 // drkent@users.sourceforge.net mtfeldmann@users.sourceforge.net
00012 
00013 #ifndef ZeroCorrelationFunction_H
00014 #define ZeroCorrelationFunction_H
00015 
00016 #include "Array1D.h"
00017 #include "QMCCorrelationFunction.h"
00018 
00019 
00024 class ZeroCorrelationFunction : public QMCCorrelationFunction
00025 {
00026 public:
00027 
00028   void initializeParameters(Array1D<int> & BeginningIndexOfParameterType, 
00029                             Array1D<double> &Parameters,
00030                             Array1D<int> & BeginningIndexOfConstantType, 
00031                             Array1D<double> & Constants);
00032   
00033   void evaluate( double r );
00034 
00035   bool isSingular();
00036   
00037   Array1D<Complex> getPoles();
00038   
00039   double getFunctionValue();
00040   double getFunctionValue(double r);
00041 
00042   double get_p_a(int ai);
00043   
00044   double getFirstDerivativeValue();
00045   double get_p2_xa(int ai);
00046   
00047   double getSecondDerivativeValue();
00048   double get_p3_xxa(int ai);
00049 
00050   Array1D<double> getNumeratorCoeffs();
00051 
00052   Array1D<double> getDenominatorCoeffs();
00053 };
00054 
00055 #endif