//=============================================================================
//! (DO NOT USE) Smart-temporary Real Double-precision Symmetric Matrix Class
class _dsymatrix
{
public:
///////////////////////////////////////////////
/////////////////// objects ///////////////////
///////////////////////////////////////////////
mutable long const& m; //!< matrix row size
mutable long n; //!< matrix column size
mutable double* array; //!< 1D array to store matrix data
mutable double** darray; //!< array of pointers of column head addresses
///////////////////////////////////////////////
///////////////// constructors ////////////////
///////////////////////////////////////////////
inline _dsymatrix();
inline _dsymatrix(const _dsymatrix&);
inline ~_dsymatrix(); //destructor
///////////////////////////////////////////////
////////////////// functions //////////////////
///////////////////////////////////////////////
//////// cast ////////
inline _zhematrix to_zhematrix() const;
inline _dgematrix to_dgematrix() const;
inline _dssmatrix to_dssmatrix(const double=DBL_MIN) const;
//////// io ////////
inline double& operator()(const long&, const long&) const;
inline friend std::ostream& operator<<(std::ostream&, const dsymatrix&);
inline void write(const char*) const;
//////// misc ////////
inline void nullify() const;
inline void destroy() const;
inline void complete() const;
//////// calc ////////
inline friend _dsymatrix t(const _dsymatrix&);
inline friend _dsymatrix i(const _dsymatrix&);
inline friend void idamax(long&, long&, const _dsymatrix&);
inline friend double damax(const _dsymatrix&);
///////////////////////////////////////////////
///////////// numerical operators /////////////
///////////////////////////////////////////////
//////// unary ////////
inline friend const _dsymatrix& operator+(const _dsymatrix&);
inline friend _dsymatrix operator-(const _dsymatrix&);
//////// + ////////
inline friend _dgematrix operator+(const _dsymatrix&, const dgematrix&);
inline friend _dgematrix operator+(const _dsymatrix&, const _dgematrix&);
inline friend _dsymatrix operator+(const _dsymatrix&, const dsymatrix&);
inline friend _dsymatrix operator+(const _dsymatrix&, const _dsymatrix&);
inline friend _dgematrix operator+(const _dsymatrix&, const dgbmatrix&);
inline friend _dgematrix operator+(const _dsymatrix&, const _dgbmatrix&);
inline friend _dgematrix operator+(const _dsymatrix&, const dgsmatrix&);
inline friend _dgematrix operator+(const _dsymatrix&, const _dgsmatrix&);
inline friend _dsymatrix operator+(const _dsymatrix&, const dssmatrix&);
inline friend _dsymatrix operator+(const _dsymatrix&, const _dssmatrix&);
//////// - ////////
inline friend _dgematrix operator-(const _dsymatrix&, const dgematrix&);
inline friend _dgematrix operator-(const _dsymatrix&, const _dgematrix&);
inline friend _dsymatrix operator-(const _dsymatrix&, const dsymatrix&);
inline friend _dsymatrix operator-(const _dsymatrix&, const _dsymatrix&);
inline friend _dgematrix operator-(const _dsymatrix&, const dgbmatrix&);
inline friend _dgematrix operator-(const _dsymatrix&, const _dgbmatrix&);
inline friend _dgematrix operator-(const _dsymatrix&, const dgsmatrix&);
inline friend _dgematrix operator-(const _dsymatrix&, const _dgsmatrix&);
inline friend _dsymatrix operator-(const _dsymatrix&, const dssmatrix&);
inline friend _dsymatrix operator-(const _dsymatrix&, const _dssmatrix&);
//////// * ////////
inline friend _dcovector operator*(const _dsymatrix&, const dcovector&);
inline friend _dcovector operator*(const _dsymatrix&, const _dcovector&);
inline friend _dgematrix operator*(const _dsymatrix&, const dgematrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const _dgematrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const dsymatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const _dsymatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const dgbmatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const _dgbmatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const dgsmatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const _dgsmatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const dssmatrix&);
inline friend _dgematrix operator*(const _dsymatrix&, const _dssmatrix&);
inline friend _dsymatrix operator*(const _dsymatrix&, const double&);
//////// / ////////
inline friend _dsymatrix operator/(const _dsymatrix&, const double&);
//////// double ////////
inline friend _dsymatrix operator*(const double&, const _dsymatrix&);
};