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