Implements a sparse matrix defined by a stencil. Matrix. More...

#include <pzstencil.h>

Inheritance diagram for TPZStencilMatrix< TVar >:

Collaboration diagram for TPZStencilMatrix< TVar >:

Classes
struct	MPStencil

Public Member Functions
	TPZStencilMatrix (int rows, int cols)
	sets up the StencilMatrix based on the stencil More...

virtual	~TPZStencilMatrix ()

virtual int	Rows () const
	Returns the rows of this. More...

virtual int	Cols () const
	Returns the columns of this. More...

virtual const TVar &	GetVal (const int row, const int col) const
	Get the matrix entry at (row,col) without bound checking. More...

virtual void	MultAdd (const TPZFMatrix< TVar > &x, const TPZFMatrix< TVar > &y, TPZFMatrix< TVar > &z, const TVar alpha=1., const TVar beta=0., const int opt=0) const
	computes More...

virtual void	Print (const char *title, std::ostream &out=std::cout, const MatrixOutputFormat form=EFormatted) const
	Print the matrix along with a identification title. More...

void	SolveSOR (int &numiterations, const TPZFMatrix< TVar > &rhs, TPZFMatrix< TVar > &x, TPZFMatrix< TVar > *residual, TPZFMatrix< TVar > &scratch, const TVar overrelax, TVar &tol, const int FromCurrent=0, const int direction=1)

void	SetStencil (int stencilnumber, int inc, int IA, TVar A)
	initiates Stencil number "stencilnumber" with the data More...

void	SetNodeStencils (int *stencilnumber)
	associates the given stencil number with each row More...

Public Member Functions inherited from TPZMatrix< TVar >
	TPZMatrix ()
	Simple constructor. More...

	TPZMatrix (const TPZMatrix< TVar > &cp)

virtual	~TPZMatrix ()
	Simple destructor. More...

virtual TPZMatrix< TVar > *	Clone () const =0

virtual int64_t	MemoryFootprint () const
	Returns the approximate size of the memory footprint (amount of memory required to store this object). More...

template<class TVar2 >
void	CopyFrom (TPZMatrix< TVar2 > &copy)

void	AutoFill (int64_t nrow, int64_t ncol, int symmetric)
	Fill matrix storage with randomic values. More...

virtual int	VerifySymmetry (REAL tol=1.e-13) const
	Checks if current matrix value is symmetric. More...

virtual int	Put (const int64_t row, const int64_t col, const TVar &value)
	Put values with bounds checking if DEBUG variable is defined. More...

virtual const TVar &	Get (const int64_t row, const int64_t col) const
	Get value with bound checking. More...

const TVar &	g (const int64_t row, const int64_t col) const
	Substitution for the () operator when const arguments are needed. More...

TVar &	operator() (const int64_t row, const int64_t col)
	The operators check on the bounds if the DEBUG variable is defined. More...

virtual TVar &	s (const int64_t row, const int64_t col)
	The operators check on the bounds if the DEBUG variable is defined. More...

TVar &	operator() (const int64_t row)
	The operators check on the bounds if the DEBUG variable is defined. More...

virtual int	PutVal (const int64_t, const int64_t, const TVar &val)
	Put values without bounds checking This method is faster than "Put" if DEBUG is defined. More...

virtual const TVar &	GetVal (const int64_t, const int64_t) const
	Get values without bounds checking This method is faster than "Get" if DEBUG is defined. More...

virtual void	AddKel (TPZFMatrix< TVar > &elmat, TPZVec< int64_t > &destinationindex)
	Add a contribution of a stiffness matrix. More...

virtual void	AddKel (TPZFMatrix< TVar > &elmat, TPZVec< int64_t > &sourceindex, TPZVec< int64_t > &destinationindex)
	Add a contribution of a stiffness matrix. More...

void	SetIsDecomposed (int val)
	Sets current matrix to decomposed state. More...

virtual bool	Compare (TPZSavable *copy, bool override=false) override
	Compare the object for identity with the object pointed to, eventually copy the object. More...

virtual bool	Compare (TPZSavable *copy, bool override=false) const override
	Compare the object for identity with the object pointed to, eventually copy the object. More...

virtual void	GetSub (const TPZVec< int64_t > &indices, TPZFMatrix< TVar > &block) const
	Extract the block indicated by the indices from the matrix. More...

bool	CompareValues (TPZMatrix< TVar > &M, TVar tol)
	Compare values of this to B, with a precision tolerance tol. More...

template<>
void	Print (const char *name, std::ostream &out, const MatrixOutputFormat form) const

template<>
void	Print (const char *name, std::ostream &out, const MatrixOutputFormat form) const

template<>
void	Print (const char *name, std::ostream &out, const MatrixOutputFormat form) const

template<>
void	SolveCG (int64_t &numiterations, TPZSolver< std::complex< float > > &preconditioner, const TPZFMatrix< std::complex< float > > &F, TPZFMatrix< std::complex< float > > &result, TPZFMatrix< std::complex< float > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveCG (int64_t &numiterations, TPZSolver< std::complex< double > > &preconditioner, const TPZFMatrix< std::complex< double > > &F, TPZFMatrix< std::complex< double > > &result, TPZFMatrix< std::complex< double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveCG (int64_t &numiterations, TPZSolver< std::complex< long double > > &preconditioner, const TPZFMatrix< std::complex< long double > > &F, TPZFMatrix< std::complex< long double > > &result, TPZFMatrix< std::complex< long double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveGMRES (int64_t &numiterations, TPZSolver< std::complex< float > > &preconditioner, TPZFMatrix< std::complex< float > > &H, int &numvectors, const TPZFMatrix< std::complex< float > > &F, TPZFMatrix< std::complex< float > > &result, TPZFMatrix< std::complex< float > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveGMRES (int64_t &numiterations, TPZSolver< std::complex< double > > &preconditioner, TPZFMatrix< std::complex< double > > &H, int &numvectors, const TPZFMatrix< std::complex< double > > &F, TPZFMatrix< std::complex< double > > &result, TPZFMatrix< std::complex< double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveGMRES (int64_t &numiterations, TPZSolver< std::complex< long double > > &preconditioner, TPZFMatrix< std::complex< long double > > &H, int &numvectors, const TPZFMatrix< std::complex< long double > > &F, TPZFMatrix< std::complex< long double > > &result, TPZFMatrix< std::complex< long double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveBICG (int64_t &numiterations, TPZSolver< std::complex< float > > &preconditioner, const TPZFMatrix< std::complex< float > > &F, TPZFMatrix< std::complex< float > > &result, REAL &tol)

template<>
void	SolveBICG (int64_t &numiterations, TPZSolver< std::complex< double > > &preconditioner, const TPZFMatrix< std::complex< double > > &F, TPZFMatrix< std::complex< double > > &result, REAL &tol)

template<>
void	SolveBICG (int64_t &numiterations, TPZSolver< std::complex< long double > > &preconditioner, const TPZFMatrix< std::complex< long double > > &F, TPZFMatrix< std::complex< long double > > &result, REAL &tol)

template<>
void	SolveBICGStab (int64_t &numiterations, TPZSolver< std::complex< float > > &preconditioner, const TPZFMatrix< std::complex< float > > &F, TPZFMatrix< std::complex< float > > &result, TPZFMatrix< std::complex< float > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveBICGStab (int64_t &numiterations, TPZSolver< std::complex< double > > &preconditioner, const TPZFMatrix< std::complex< double > > &F, TPZFMatrix< std::complex< double > > &result, TPZFMatrix< std::complex< double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveBICGStab (int64_t &numiterations, TPZSolver< std::complex< long double > > &preconditioner, const TPZFMatrix< std::complex< long double > > &F, TPZFMatrix< std::complex< long double > > &result, TPZFMatrix< std::complex< long double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveIR (int64_t &numiterations, TPZSolver< std::complex< float > > &preconditioner, const TPZFMatrix< std::complex< float > > &F, TPZFMatrix< std::complex< float > > &result, TPZFMatrix< std::complex< float > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveIR (int64_t &numiterations, TPZSolver< std::complex< double > > &preconditioner, const TPZFMatrix< std::complex< double > > &F, TPZFMatrix< std::complex< double > > &result, TPZFMatrix< std::complex< double > > *residual, REAL &tol, const int FromCurrent)

template<>
void	SolveIR (int64_t &numiterations, TPZSolver< std::complex< long double > > &preconditioner, const TPZFMatrix< std::complex< long double > > &F, TPZFMatrix< std::complex< long double > > &result, TPZFMatrix< std::complex< long double > > *residual, REAL &tol, const int FromCurrent)

template<>
bool	SolveEigenvaluesJacobi (int64_t &numiterations, REAL &tol, TPZVec< std::complex< float > > *Sort)

template<>
bool	SolveEigenvaluesJacobi (int64_t &numiterations, REAL &tol, TPZVec< std::complex< double > > *Sort)

template<>
bool	SolveEigenvaluesJacobi (int64_t &numiterations, REAL &tol, TPZVec< std::complex< long double > > *Sort)

virtual void	Multiply (const TPZFMatrix< TVar > &A, TPZFMatrix< TVar > &res, int opt=0) const
	It mutiplies itself by TPZMatrix<TVar>A putting the result in res. More...

virtual void	Add (const TPZMatrix< TVar > &A, TPZMatrix< TVar > &res) const
	It adds itself to TPZMatrix<TVar>A putting the result in res. More...

virtual void	Residual (const TPZFMatrix< TVar > &x, const TPZFMatrix< TVar > &rhs, TPZFMatrix< TVar > &res)
	Computes res = rhs - this * x. More...

virtual void	Substract (const TPZMatrix< TVar > &A, TPZMatrix< TVar > &result) const
	It substracts A from storing the result in result. More...

virtual void	Identity ()
	Converts the matrix in an identity matrix. More...

virtual void	Transpose (TPZMatrix< TVar > *const T) const
	It makes *T the transpose of current matrix. More...

int	Inverse (TPZFMatrix< TVar > &Inv, DecomposeType dec)
	It makes Inv =[this]. IMPORTANT OBSERVATION –> The original matrix (calling object) no is more equal. It containts the some decomposition (LU or Cholesky or ...) More...

TVar	MatrixNorm (int p, int64_t numiter=2000000, REAL tol=1.e-10) const
	Computes the matrix norm of this. More...

TVar	ConditionNumber (int p, int64_t numiter=2000000, REAL tol=1.e-10)
	Computes the matrix condition number of this. More...

virtual int	PutSub (const int64_t sRow, const int64_t sCol, const TPZFMatrix< TVar > &Source)
	It puts submatrix Source on actual matrix structure. More...

virtual int	GetSub (const int64_t sRow, const int64_t sCol, const int64_t rowSize, const int64_t colSize, TPZFMatrix< TVar > &Target) const
	Gets submatrix storing it on Target. More...

virtual int	AddSub (const int64_t sRow, const int64_t sCol, const TPZFMatrix< TVar > &Source)
	It adds Source matrix on current matrix from position (sRow, sCol) More...

virtual int	InsertSub (const int64_t sRow, const int64_t sCol, const int64_t rowSize, const int64_t colSize, const int64_t pRow, const int64_t pCol, TPZMatrix< TVar > *Target) const
	Inserts a submatrix from current object on matrix *Target with no redimentioning. More...

virtual int	AddSub (const int64_t sRow, const int64_t sCol, const int64_t rowSize, const int64_t colSize, const int64_t pRow, const int64_t pCol, TPZMatrix< TVar > *pA) const
	Adds a submatrix from current object in *Target. More...

virtual void	UpdateFrom (TPZAutoPointer< TPZMatrix< TVar > >)
	Updates the values of the matrix based on the values of the matrix. More...

virtual int	IsSimetric () const
	Checks if the current matrix is symmetric. More...

int	IsSquare () const
	Checks if current matrix is square. More...

virtual void	Simetrize ()
	Simetrizes copies upper plan to the lower plan, making its data simetric. More...

virtual int	IsDefPositive () const
	Checks if current matrix is definite positive. More...

int	IsDecomposed () const
	Checks if current matrix is already decomposed. More...

virtual int	Decompose_LU (std::list< int64_t > &singular)
	Decomposes the current matrix using LU decomposition. More...

virtual int	Decompose_LU ()

virtual int	Decompose_Cholesky ()
	Decomposes the current matrix using Cholesky method. The current matrix has to be symmetric. More...

virtual int	Decompose_Cholesky (std::list< int64_t > &singular)
	Decomposes the current matrix using Cholesky method. More...

virtual int	Decompose_LDLt (std::list< int64_t > &singular)
	Decomposes the current matrix using LDLt. The current matrix has to be symmetric. "L" is lower triangular with 1.0 in its diagonal and "D" is a Diagonal matrix. More...

virtual int	Decompose_LDLt ()
	Decomposes the current matrix using LDLt. More...

virtual int	Substitution (TPZFMatrix< TVar > *B) const
	Computes Forward and Backward substitution for a "LU" decomposed matrix. More...

virtual int	Subst_Forward (TPZFMatrix< TVar > *b) const
	Computes B = Y, where A*Y = B, A is lower triangular. More...

virtual int	Subst_Backward (TPZFMatrix< TVar > *b) const
	Computes B = Y, where A*Y = B, A is upper triangular. More...

virtual int	Subst_LForward (TPZFMatrix< TVar > *b) const
	Computes B = Y, where A*Y = B, A is lower triangular with A(i,i)=1. More...

virtual int	Subst_LBackward (TPZFMatrix< TVar > *b) const
	Computes B = Y, where A*Y = B, A is upper triangular with A(i,i)=1. More...

virtual int	Subst_Diag (TPZFMatrix< TVar > *b) const
	Computes B = Y, where A*Y = B, A is diagonal matrix. More...

int	ClassId () const override
	Define the class id associated with the class. More...

void	Read (TPZStream &buf, void *context) override
	Unpacks the object structure from a stream of bytes. More...

void	Write (TPZStream &buf, int withclassid) const override
	Packs the object structure in a stream of bytes. More...

virtual void	Input (std::istream &in=std::cin)
	Input operation. More...

virtual void	Print (std::ostream &out) const

int64_t	Rows () const
	Returns number of rows. More...

int64_t	Cols () const
	Returns number of cols. More...

virtual int64_t	Dim () const
	Returns the dimension of the matrix if the matrix is square. More...

virtual int	Resize (const int64_t newRows, const int64_t newCols)
	Redimensions a matriz keeping the previous values. More...

virtual int	Redim (const int64_t newRows, const int64_t newCols)
	Redimensions the matrix reinitializing it with zero. More...

virtual int	Zero ()
	Zeroes the matrix. More...

virtual void	SolveJacobi (int64_t &numiterations, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, TPZFMatrix< TVar > &scratch, REAL &tol, const int FromCurrent=0)
	Solves the linear system using Jacobi method. . More...

virtual void	SolveSOR (int64_t &numiterations, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, TPZFMatrix< TVar > &scratch, const REAL overrelax, REAL &tol, const int FromCurrent=0, const int direction=1)
	Solves the linear system using Successive Over Relaxation method (Gauss Seidel). . More...

virtual void	SolveSSOR (int64_t &numiterations, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, TPZFMatrix< TVar > &scratch, const REAL overrelax, REAL &tol, const int FromCurrent=0)
	Solves the linear system using Symmetric Successive Over Relaxation method (Gauss Seidel). . More...

virtual void	SolveCG (int64_t &numiterations, TPZSolver< TVar > &preconditioner, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, REAL &tol, const int FromCurrent=0)
	Solves the linear system using Conjugate Gradient method. . More...

virtual void	SolveBICG (int64_t &numiterations, TPZSolver< TVar > &preconditioner, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, REAL &tol)
	Solves the linear system using Bi-Conjugate Gradient method. . More...

virtual void	SolveBICGStab (int64_t &numiterations, TPZSolver< TVar > &preconditioner, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, REAL &tol, const int FromCurrent=0)
	Solves the linear system using Bi-Conjugate Gradient stabilized method. . More...

virtual void	SolveGMRES (int64_t &numiterations, TPZSolver< TVar > &preconditioner, TPZFMatrix< TVar > &H, int &numvectors, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, REAL &tol, const int FromCurrent)
	Solves the linear system using Generalized Minimal Residual (GMRES) method. . More...

virtual void	SolveIR (int64_t &numiterations, TPZSolver< TVar > &preconditioner, const TPZFMatrix< TVar > &F, TPZFMatrix< TVar > &result, TPZFMatrix< TVar > *residual, REAL &tol, const int FromCurrent=0)
	Solves the linear system using IR method. . More...

virtual bool	SolveEigenvaluesJacobi (int64_t &numiterations, REAL &tol, TPZVec< TVar > *Sort=0)
	Transforms this matrix in a diagonal matrix, where the diagonal values are its eigenvalues. This method is efficient only for small matrices. More...

virtual bool	SolveEigensystemJacobi (int64_t &numiterations, REAL &tol, TPZVec< TVar > &Eigenvalues, TPZFMatrix< TVar > &Eigenvectors) const
	Compute Eigenvalues and Eigenvectors of this matrix. This method is efficient only for small matrices. More...

virtual int	SolveDirect (TPZFMatrix< TVar > &F, const DecomposeType dt, std::list< int64_t > &singular)
	Solves the linear system using Direct methods. More...

virtual int	SolveDirect (TPZFMatrix< TVar > &F, const DecomposeType dt)
	Solves the linear system using Direct methods. More...

virtual int	Decompose (const DecomposeType dt, std::list< int64_t > &singular)
	decompose the system of equations acording to the decomposition scheme More...

int	Solve_LU (TPZFMatrix< TVar > *B, std::list< int64_t > &singular)
	Solves the linear system using LU method . More...

int	Solve_LU (TPZFMatrix< TVar > *B)
	Solves the linear system using LU method . More...

virtual int	Solve_Cholesky (TPZFMatrix< TVar > *B)
	Solves the linear system using Cholesky method . More...

int	Solve_Cholesky (TPZFMatrix< TVar > *B, std::list< int64_t > &singular)
	Solves the linear system using Cholesky method . More...

int	Solve_LDLt (TPZFMatrix< TVar > *B, std::list< int64_t > &singular)
	Solves the linear system using LDLt method . More...

int	Solve_LDLt (TPZFMatrix< TVar > *B)
	Solves the linear system using LDLt method . More...

Public Member Functions inherited from TPZSavable
	TPZSavable ()

virtual	~TPZSavable ()

virtual std::list< std::map< std::string, uint64_t > >	VersionHistory () const

virtual std::pair< std::string, uint64_t >	Version () const

Public Member Functions inherited from TPZRegisterClassId
template<typename T >
	TPZRegisterClassId (int(T::*)() const)

	TPZRegisterClassId ()=default

Private Member Functions
void	IncreaseStencilPointers (int stencilnumber)

void	ComputeDiagonal ()

Private Attributes
struct TPZStencilMatrix::MPStencil **	fMystencils

int	fNumberOfStencilPointers

int	fRows

int	fCols

int *	fStencilNumbers

TVar *	fDiag

int	fSolver

int	fMaxIterations

TVar	fSORRelaxation

Additional Inherited Members
Static Public Member Functions inherited from TPZMatrix< TVar >
static int	Error (const char msg, const char msg2=0)
	Returns error messages. More...

static TVar	ReturnNearestValue (TVar val, TPZVec< TVar > &Vec, TVar tol)
	Retorna o valor mais proximo a "val" (exceto valores no intervalo -tol <= val <= +tol) contido no vetor Vec. More...

Static Public Member Functions inherited from TPZSavable
static std::set< TPZRestoreClassBase * > &	RestoreClassSet ()
	This static function guarantees that the gMap object is available when needed. More...

static std::map< int, TPZRestore_t > &	ClassIdMap ()
	This static function guarantees that the gMap object is available when needed. More...

static std::pair< std::string, uint64_t >	NeoPZVersion ()

static void	Register (TPZRestoreClassBase *restore)

static void	RegisterClassId (int classid, TPZRestore_t fun)

static TPZSavable *	CreateInstance (const int &classId)

Protected Member Functions inherited from TPZMatrix< TVar >
void	PrepareZ (const TPZFMatrix< TVar > &y, TPZFMatrix< TVar > &z, const TVar beta, const int opt) const
	Is an auxiliar method used by MultiplyAdd. More...

	TPZMatrix (const int64_t row, const int64_t col)
	Constructor. More...

virtual int	Clear ()
	It clears data structure. More...

Static Protected Member Functions inherited from TPZMatrix< TVar >
static void	Swap (int64_t a, int64_t b)
	Swaps contents of a in b and b in a. More...

Protected Attributes inherited from TPZMatrix< TVar >
int64_t	fRow
	Number of rows in matrix. More...

int64_t	fCol
	Number of cols in matrix. More...

char	fDecomposed
	Decomposition type used to decompose the current matrix. More...

char	fDefPositive
	Definite Posistiveness of current matrix. More...

Static Protected Attributes inherited from TPZMatrix< TVar >
static TVar	gZero
	Initializing value to static variable. More...

Detailed Description

template<class TVar>
class TPZStencilMatrix< TVar >

Implements a sparse matrix defined by a stencil. Matrix.

Definition at line 19 of file pzstencil.h.

Constructor & Destructor Documentation

◆ TPZStencilMatrix()

template<class TVar >

TPZStencilMatrix< TVar >::TPZStencilMatrix	(	int	rows,
		int	cols
	)

sets up the StencilMatrix based on the stencil

Definition at line 19 of file pzstencil.cpp.

◆ ~TPZStencilMatrix()

template<class TVar >

TPZStencilMatrix< TVar >::~TPZStencilMatrix ( )

virtual

Definition at line 36 of file pzstencil.cpp.

Member Function Documentation

◆ Cols()

template<class TVar >

int TPZStencilMatrix< TVar >::Cols ( ) const

inlinevirtual

Returns the columns of this.

Definition at line 89 of file pzstencil.h.

References TPZStencilMatrix< TVar >::fCols.

◆ ComputeDiagonal()

template<class TVar >

void TPZStencilMatrix< TVar >::ComputeDiagonal ( )

private

Definition at line 238 of file pzstencil.cpp.

References TPZStencilMatrix< TVar >::MPStencil::fA, TPZStencilMatrix< TVar >::MPStencil::fIA, TPZStencilMatrix< TVar >::MPStencil::fInc, and TPZStencilMatrix< TVar >::MPStencil::fNumberOfItems.

◆ GetVal()

template<class TVar >

const TVar & TPZStencilMatrix< TVar >::GetVal	(	const int	row,
		const int	col
	)		const

virtual

Get the matrix entry at (row,col) without bound checking.

Definition at line 59 of file pzstencil.cpp.

References TPZStencilMatrix< TVar >::MPStencil::fA, TPZStencilMatrix< TVar >::MPStencil::fIA, TPZStencilMatrix< TVar >::MPStencil::fInc, and TPZStencilMatrix< TVar >::MPStencil::fNumberOfItems.

◆ IncreaseStencilPointers()

template<class TVar >

void TPZStencilMatrix< TVar >::IncreaseStencilPointers ( int stencilnumber )

private

Definition at line 338 of file pzstencil.cpp.

◆ MultAdd()

template<class TVar >

void TPZStencilMatrix< TVar >::MultAdd	(	const TPZFMatrix< TVar > &	x,
		const TPZFMatrix< TVar > &	y,
		TPZFMatrix< TVar > &	z,
		const TVar	alpha = `1.`,
		const TVar	beta = `0.`,
		const int	opt = `0`
	)		const

virtual

computes $ z = beta * y + alpha * opt(this)*x $

z and x cannot overlap in memory

Reimplemented from TPZMatrix< TVar >.

Definition at line 112 of file pzstencil.cpp.

References TPZStencilMatrix< TVar >::MPStencil::fA, TPZStencilMatrix< TVar >::MPStencil::fIA, TPZStencilMatrix< TVar >::MPStencil::fInc, TPZStencilMatrix< TVar >::MPStencil::fNumberOfItems, TPZFMatrix< TVar >::GetVal(), and val().

◆ Print()

template<class TVar >

void TPZStencilMatrix< TVar >::Print	(	const char *	title,
		std::ostream &	out = `std::cout`,
		const MatrixOutputFormat	form = `EFormatted`
	)		const

virtual

Print the matrix along with a identification title.

Reimplemented from TPZMatrix< TVar >.

Definition at line 188 of file pzstencil.cpp.

References EInputFormat, TPZStencilMatrix< TVar >::MPStencil::fA, TPZStencilMatrix< TVar >::MPStencil::fIA, TPZStencilMatrix< TVar >::MPStencil::fInc, and TPZStencilMatrix< TVar >::MPStencil::fNumberOfItems.

◆ Rows()

template<class TVar >

int TPZStencilMatrix< TVar >::Rows ( ) const

inlinevirtual

Returns the rows of this.

Definition at line 84 of file pzstencil.h.

References TPZStencilMatrix< TVar >::fRows.

◆ SetNodeStencils()

template<class TVar >

void TPZStencilMatrix< TVar >::SetNodeStencils ( int * stencilnumber )

associates the given stencil number with each row

Definition at line 351 of file pzstencil.cpp.

◆ SetStencil()

template<class TVar >

void TPZStencilMatrix< TVar >::SetStencil	(	int	stencilnumber,
		int	inc,
		int *	IA,
		TVar *	A
	)

initiates Stencil number "stencilnumber" with the data

Definition at line 326 of file pzstencil.cpp.

◆ SolveSOR()

template<class TVar >

void TPZStencilMatrix< TVar >::SolveSOR	(	int &	numiterations,
		const TPZFMatrix< TVar > &	rhs,
		TPZFMatrix< TVar > &	x,
		TPZFMatrix< TVar > *	residual,
		TPZFMatrix< TVar > &	scratch,
		const TVar	overrelax,
		TVar &	tol,
		const int	FromCurrent = `0`,
		const int	direction = `1`
	)

Definition at line 269 of file pzstencil.cpp.

References TPZStencilMatrix< TVar >::MPStencil::fA, TPZStencilMatrix< TVar >::MPStencil::fIA, TPZStencilMatrix< TVar >::MPStencil::fNumberOfItems, TPZFMatrix< TVar >::GetVal(), sqrt, pzgeom::tol, val(), and TPZFMatrix< TVar >::Zero().

Member Data Documentation

◆ fCols

template<class TVar >

int TPZStencilMatrix< TVar >::fCols

private

Definition at line 73 of file pzstencil.h.

Referenced by TPZStencilMatrix< TVar >::Cols().

◆ fDiag

template<class TVar >

TVar* TPZStencilMatrix< TVar >::fDiag

private

Definition at line 76 of file pzstencil.h.

◆ fMaxIterations

template<class TVar >

int TPZStencilMatrix< TVar >::fMaxIterations

private

Definition at line 78 of file pzstencil.h.

◆ fMystencils

template<class TVar >

struct TPZStencilMatrix::MPStencil ** TPZStencilMatrix< TVar >::fMystencils

private

◆ fNumberOfStencilPointers

template<class TVar >

int TPZStencilMatrix< TVar >::fNumberOfStencilPointers

private

Definition at line 72 of file pzstencil.h.

◆ fRows

template<class TVar >

int TPZStencilMatrix< TVar >::fRows

private

Definition at line 73 of file pzstencil.h.

Referenced by TPZStencilMatrix< TVar >::Rows().

◆ fSolver

template<class TVar >

int TPZStencilMatrix< TVar >::fSolver

private

Definition at line 77 of file pzstencil.h.

◆ fSORRelaxation

template<class TVar >

TVar TPZStencilMatrix< TVar >::fSORRelaxation

private

Definition at line 80 of file pzstencil.h.

◆ fStencilNumbers

template<class TVar >

int* TPZStencilMatrix< TVar >::fStencilNumbers

private

Definition at line 74 of file pzstencil.h.

The documentation for this class was generated from the following files:

Matrix/pzstencil.h
Matrix/pzstencil.cpp

Classes

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

template<class TVar> class TPZStencilMatrix< TVar >

Constructor & Destructor Documentation

◆ TPZStencilMatrix()

◆ ~TPZStencilMatrix()

Member Function Documentation

◆ Cols()

◆ ComputeDiagonal()

◆ GetVal()

◆ IncreaseStencilPointers()

◆ MultAdd()

◆ Print()

◆ Rows()

◆ SetNodeStencils()

◆ SetStencil()

◆ SolveSOR()

Member Data Documentation

◆ fCols

◆ fDiag

◆ fMaxIterations

◆ fMystencils

◆ fNumberOfStencilPointers

◆ fRows

◆ fSolver

◆ fSORRelaxation

◆ fStencilNumbers

template<class TVar>
class TPZStencilMatrix< TVar >