The class LinBox::DenseMatrixBase provides an archetype for matrices that are "directly represented", that is, where the user has direct access to iterators over the rows and columns, and to all of the elements themselves by position.
The class LinBox::SparseMatrixBase provides an archetype for matrices that are partially "directly represented", that is, where the user has direct access to (sparse) iterators over the rows and columns, and to all of the nonzero elements themselves by position.
The directly represented matrices are pure containers; they provide no matrix arithmetic and do not implement the black box interface (but this is added in their counterparts LinBox::DenseMatrix and LinBox::SparseMatrix in linbox/blackbox) They are parameterized solely by element type. The field is not necessary.
Matrices in general may omit one of the iterators, either the row iterator or the column iterator. This is useful for, e.g. sparse matrices that are represented by sparse row vectors, since column vectors are computationally expensive to compute without directly building the transpose of the matrix.
The class MatrixDomain provides a complete suite of matrix arithmetic that works transparently with any class meeting the interface defined by the classes below. This includes matrix-matrix addition and multiplication, matrix-vector multiplication, and matrix-blackbox (c.f. BlackboxArchetype ) multiplication.
Compounds | |
| class | DenseMatrixBase |
| class | DenseSubmatrix |
| class | SparseMatrixBase |
1.2.18