algebra::SparseMatrix Class Reference

Square sparse matrix. More...

#include <sparseMat.h>

Classes
struct	SparseVector

Public Member Functions
	SparseMatrix (const MatrixShape &shape)
void	clear ()
void	set (int i, int j, double val)
void	add (int i, int j, double val)
void	print (std::ostream &flux=std::cout) const
double	operator() (const int i, const int j) const
template<typename T >
void	mult (std::vector< T > const &X, std::vector< T > &Y)
template<typename T >
void	build_diag_precond (std::vector< T > &D) const

Private Attributes
std::vector< SparseVector >	rows

Detailed Description

Square sparse matrix.

This is the sparse matrix class, meant for efficiently computing matrix-vector products.

Constructor & Destructor Documentation

SparseMatrix()

algebra::SparseMatrix::SparseMatrix ( const MatrixShape &  shape )

inline

Construct from a matrix shape. Initialize all stored values to zero.

Member Function Documentation

add()

void algebra::SparseMatrix::add ( int  i, int  j, double  val  )

inline

Add the provided value at position (i, j), which must belong to the shape. This method is thread-safe.

build_diag_precond()

template<typename T >

void algebra::SparseMatrix::build_diag_precond ( std::vector< T > &  D ) const

inline

Build a diagonal preconditioner D from this matrix.

clear()

void algebra::SparseMatrix::clear ( )

inline

Zero-out all elements, while preserving the shape.

mult()

template<typename T >

void algebra::SparseMatrix::mult ( std::vector< T > const &  X, std::vector< T > &  Y  )

inline

Y = this*X

operator()()

double algebra::SparseMatrix::operator() ( const int  i, const int  j  ) const

inline

Return the value at position (i, j).

print()

void algebra::SparseMatrix::print ( std::ostream &  flux = std::cout ) const

inline

Print to the provided stream.

set()

void algebra::SparseMatrix::set ( int  i, int  j, double  val  )

inline

Set the value at position (i, j), which must belong to the shape.

Member Data Documentation

rows

std::vector<SparseVector> algebra::SparseMatrix::rows

private

Container for the matrix rows. Since SparseVector is not movable, this container cannot be resized.

---

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

• algebra/sparseMat.h