DifferentialOperator.h

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/*
 *  Copyright (c) 2018, Martin Duy Tat
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#ifndef DIFFERENTIAL_OPERATOR_H
#define DIFFERENTIAL_OPERATOR_H

#include <vector>
#include "Polynomial.h"

namespace polynomial {

class DifferentialOperator {
public:
    DifferentialOperator();
    DifferentialOperator(const std::size_t &xDerivatives,
                         const std::size_t &sDerivatives);
    DifferentialOperator(const DifferentialOperator &doperator);
    DifferentialOperator& operator= (const DifferentialOperator &doperator);
    ~DifferentialOperator();
    void resizeX(const std::size_t &xDerivatives);
    void resizeS(const std::size_t &sDerivatives);
    void differentiateX();
    void doubleDifferentiateS();
    void multiplyPolynomial(const Polynomial &poly);
    void setPolynomial(const std::vector<int> &poly,
                       const std::size_t &x,
                       const std::size_t &s);
    void printOperator() const;
    void addOperator(const DifferentialOperator &doperator);
    std::size_t getXDerivatives() const;
    std::size_t getSDerivatives() const;
    bool isPolynomialZero(const std::size_t &x, const std::size_t &s) const;
    void truncate(const std::size_t &truncateOrder);
    double evaluatePolynomial(const double &x,
                              const std::size_t &xDerivative,
                              const std::size_t &sDerivative) const;
private:
    std::vector<std::vector<Polynomial>> polynomials_m;
    std::size_t xDerivatives_m;
    std::size_t sDerivatives_m;
};

inline
    std::size_t DifferentialOperator::getXDerivatives() const {
        return xDerivatives_m;
}
inline
    std::size_t DifferentialOperator::getSDerivatives() const {
        return sDerivatives_m;
}

}

#endif