MatrixSymmetric.h

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#ifndef MATRIXSYMMETRIC_H
#define MATRIXSYMMETRIC_H

#include <cmath>
#include <sstream>
#include "Matrix.h"

class MatrixSymmetric3D
{
public:
    Mdouble XX, XY, XZ, YY, YZ, ZZ;

    operator Matrix3D() const;

    MatrixSymmetric3D();

    MatrixSymmetric3D(const Mdouble xx, const Mdouble xy, const Mdouble xz, const Mdouble yy, const Mdouble yz, const Mdouble zz);

    void setZero();

    Mdouble trace() const;

    MatrixSymmetric3D operator +(const MatrixSymmetric3D &A) const;

    MatrixSymmetric3D operator -(const MatrixSymmetric3D &A) const;

    MatrixSymmetric3D operator +(const Mdouble a) const;

    MatrixSymmetric3D operator -(const Mdouble a) const;

    friend Vec3D operator *(const MatrixSymmetric3D& A, const Vec3D& b);

    MatrixSymmetric3D operator *(const Mdouble a) const;

    MatrixSymmetric3D operator /(const Mdouble a) const;

    friend std::ostream& operator<<(std::ostream& os, const MatrixSymmetric3D& A);

    friend std::istream& operator>>(std::istream& is, MatrixSymmetric3D& A);

    MatrixSymmetric3D& operator+=(const MatrixSymmetric3D& A);

    MatrixSymmetric3D& operator-=(const MatrixSymmetric3D& A);

    MatrixSymmetric3D& operator/=(const Mdouble a);

    static MatrixSymmetric3D square(const MatrixSymmetric3D& A);

    static MatrixSymmetric3D sqrt(const MatrixSymmetric3D& A);

    static MatrixSymmetric3D selfDyadic(const Vec3D& a);

    static MatrixSymmetric3D symmetrisedDyadic(const Vec3D&  a, const Vec3D& b);
};

#endif