SparseLinearAlgebraTraits

Navigation: Up Table of Contents Package Overview Bibliography Index Title Acknowledging CGAL

SparseLinearAlgebraTraits_d::Matrix

Definition

SparseLinearAlgebraTraits_d::Matrix is a concept of a sparse matrix class.

Refines

LinearAlgebraTraits_d::Matrix

Types

SparseLinearAlgebraTraits_d::Matrix::NT

Creation

SparseLinearAlgebraTraits_d::Matrix M ( int dimension);
	Create a square matrix initialized with zeros.
SparseLinearAlgebraTraits_d::Matrix M ( int rows, int columns);
	Create a rectangular matrix initialized with zeros.

Operations

int

M.row_dimension () const

Return the matrix number of rows.

int

M.column_dimension () const

Return the matrix number of columns.

M.get_coef ( int row, int column) const

Read access to a matrix coefficient.

Preconditions:

0 <= row < row_dimension(). 0 <= column < column_dimension().

void

M.add_coef ( int row, int column, NT value)

Write access to a matrix coefficient: a_ij <- a_ij + val.

Preconditions:

0 <= row < row_dimension(). 0 <= column < column_dimension().

void

M.set_coef ( int row, int column, NT value, bool new_coef = false)

Write access to a matrix coefficient: a_ij <- val.
Optimization: Caller can optimize this call by setting new_coef to true if the coefficient does not already exist in the matrix.

Preconditions:

0 <= i < row_dimension(). 0 <= j < column_dimension().

Has Models

Eigen_sparse_matrix<T>
Eigen_sparse_symmetric_matrix<T>
OpenNL::SparseMatrix<T> in OpenNL package