Tanh.h

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/*
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#ifndef ENDFIELDMODEL_TANH_H_
#define ENDFIELDMODEL_TANH_H_
 
#include <iostream>
#include <vector>
 
#include "AbsBeamline/EndFieldModel/EndFieldModel.h"
 
namespace endfieldmodel {
 
class Tanh : public EndFieldModel {
  public:
    Tanh(double x0, double lambda, int max_index);
 
    Tanh() : _x0(0.), _lambda(0.) {setTanhDiffIndices(12);}
 
    Tanh(const Tanh& rhs) : _x0(rhs._x0), _lambda(rhs._lambda) {}
 
    ~Tanh();
 
    Tanh* clone() const;
 
    void rescale(double scaleFactor);
 
    double function(double x, int n) const;
 
    double getCentreLength() const {return getX0()*2.0;}
 
    double getEndLength() const {return getLambda();}
 
    double getTanh(double x, int n) const;
 
    double getNegTanh(double x, int n) const;
 
    static std::vector< std::vector<int> > getTanhDiffIndices(size_t n);
 
    static void setTanhDiffIndices(size_t n);
 
    inline double getLambda() const {return _lambda;}
 
    inline double getX0() const {return _x0;}
 
    inline void setLambda(double lambda) {_lambda = lambda;}
 
    inline void setX0(double x0)     {_x0 = x0;}
 
    virtual void setMaximumDerivative(size_t n);
 
    std::ostream& print(std::ostream& out) const;
  private:
    double _x0, _lambda;
 
    static std::vector< std::vector< std::vector<int> > > _tdi;
};
 
}
 
#endif