Matrix class to hold the flux derivatives A B C and diffusive matrix coefficients. Matrix. More...

#include <pzdiffmatrix.h>

Public Member Functions
	TPZDiffMatrix ()

	TPZDiffMatrix (const int64_t rows, const int64_t cols)

	~TPZDiffMatrix ()

	TPZDiffMatrix (const TPZDiffMatrix &copy)

void	Redim (const int64_t rows, const int64_t cols)
	Resizes and zeroes the matrix. More...

void	Multiply (TPZVec< T > &In, TPZVec< T > &Out, const T &scale=T(1.))
	Multiplies the matrix by a correspondent TPZVec vector. Dimensions are checked. More...

void	Multiply (TPZDiffMatrix< T > &In, TPZDiffMatrix< T > &Out, const T &scale=T(1.))
	Matrix multiplication. Dimensions are checked. More...

void	MultiplyAdd (TPZDiffMatrix< T > &In, TPZDiffMatrix< T > &Out, const T &scale=T(1.))
	Matrix multiplication. More...

TPZDiffMatrix< T > &	operator= (const TPZDiffMatrix< T > &source)
	Copies the matrix, reallocating all coefficients. More...

void	Add (TPZDiffMatrix< T > &matrix, const T &scale=T(1.))
	Adds element by element. More...

T &	operator() (const int64_t i, const int64_t j=0)
	Matrix data access. More...

void	PutVal (const int64_t row, const int64_t col, const T &value)

const T &	GetVal (const int64_t row, const int64_t col) const

TPZDiffMatrix< T > &	Transpose (TPZDiffMatrix< T > &matrix)
	Transposes the matrix onto the parameter object. More...

void	AddAlignDiv (TPZVec< T > &gradx, const int64_t varOffset, const int64_t dim, TPZVec< T > &Divergent)
	Performs a specific diffusive divergence operation. More...

void	AddDiv (T &dPhi, TPZVec< T > &U, const int64_t dim, TPZVec< T > &Divergent, TPZDiffMatrix< T > &dDivergent)
	Computes the divergent for diffusion purposes. More...

int64_t	Cols () const

int64_t	Rows () const

EStatus	Decompose_LU ()

EStatus	Substitution (TPZDiffMatrix< T > *B) const

void	Reset ()

Private Member Functions
int64_t	index (const int64_t i, const int64_t j) const

Private Attributes
int64_t	fRows

int64_t	fCols

T *	fStore

int	fDecomposed

Detailed Description

template<class T>
class TPZDiffMatrix< T >

Matrix class to hold the flux derivatives A B C and diffusive matrix coefficients. Matrix.

Author: Erick Slis; Cedric Ayala

Since: June 1, 2003.

Definition at line 27 of file pzdiffmatrix.h.

Constructor & Destructor Documentation

◆ TPZDiffMatrix() [1/3]

template<class T >

TPZDiffMatrix< T >::TPZDiffMatrix ( )

inline

Definition at line 173 of file pzdiffmatrix.h.

◆ TPZDiffMatrix() [2/3]

template<class T >

TPZDiffMatrix< T >::TPZDiffMatrix	(	const int64_t	rows,
		const int64_t	cols
	)

inline

Definition at line 178 of file pzdiffmatrix.h.

References TPZDiffMatrix< T >::Redim().

◆ ~TPZDiffMatrix()

template<class T >

TPZDiffMatrix< T >::~TPZDiffMatrix ( )

inline

Definition at line 184 of file pzdiffmatrix.h.

References TPZDiffMatrix< T >::fStore.

◆ TPZDiffMatrix() [3/3]

template<class T>

TPZDiffMatrix< T >::TPZDiffMatrix ( const TPZDiffMatrix< T > & copy )

inline

Member Function Documentation

◆ Add()

template<class T >

void TPZDiffMatrix< T >::Add	(	TPZDiffMatrix< T > &	matrix,
		const T &	scale = `T(1.)`
	)

inline

Adds element by element.

Definition at line 318 of file pzdiffmatrix.h.

References TPZDiffMatrix< T >::fCols, TPZDiffMatrix< T >::fRows, TPZDiffMatrix< T >::fStore, and PZError.

Referenced by TPZArtDiff::ODotOperator(), and TPZDiffMatrix< T >::TPZDiffMatrix().

◆ AddAlignDiv()

template<class T >

void TPZDiffMatrix< T >::AddAlignDiv	(	TPZVec< T > &	gradx,
		const int64_t	varOffset,
		const int64_t	dim,
		TPZVec< T > &	Divergent
	)

inline

Performs a specific diffusive divergence operation.

Parameters

gradx	example: {dU0dx0 dU0dx1 dU0dx2 dU1dx0... dU5dx2}
varOffset	shall lie between 0 and dim-1. Represents the index of spatial derivative to multiply the matrix by.
dim
Divergent	vetor to which the operation shall contribute to. Must be explicitly zeroed before calling this function. The object gradx contain the tangent matrix of the solutions with respect to the dim spatial dimensions.

Definition at line 337 of file pzdiffmatrix.h.

References TPZVec< T >::NElements(), and PZError.

Referenced by TPZDiffMatrix< T >::TPZDiffMatrix().

◆ AddDiv()

template<class T >

void TPZDiffMatrix< T >::AddDiv	(	T &	dPhi,
		TPZVec< T > &	U,
		const int64_t	dim,
		TPZVec< T > &	Divergent,
		TPZDiffMatrix< T > &	dDivergent
	)

inline

Computes the divergent for diffusion purposes.

Parameters

dPhi	the dim number of derivatives of test function
U	the dim+2 solutions at the given point
dim
Divergent	Vector result containing the computed divergent The operation is additive, so zero it first
dDivergent	Computes an approximate derivative of the divergent with respect to the Ui coefficients.