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## Package no.uib.cipr.matrix.sparse

Unstructured sparse matrices and vectors with iterative solvers and preconditioners.

See:
Description

Interface Summary
ISparseVector |
IterationMonitor | Monitors the iterative solution process for convergence and divergence.
IterationReporter | Reports on the progress of an iterative solver
IterativeSolver | Iterative linear solver.
Preconditioner | Preconditioner interface.

Class Summary
AbstractIterationMonitor | Partial implementation of an iteration reporter
AbstractIterativeSolver | Partial implementation of an iterative solver
AMG | Algebraic multigrid preconditioner.
BiCG | BiCG solver.
BiCGstab | BiCG stablized solver.
CG | Conjugate Gradients solver.
CGS | Conjugate Gradients squared solver.
Chebyshev | Chebyshev solver.
CompColMatrix | Compressed row storage (CRS) matrix
CompDiagMatrix | Compressed diagonal storage (CDS) matrix
CompRowMatrix | Compressed row storage (CRS) matrix
DefaultIterationMonitor | Default iteration monitor.
DiagonalPreconditioner | Diagonal preconditioner.
FlexCompColMatrix | Matrix stored column-wise into sparse vectors
FlexCompRowMatrix | Matrix stored row-wise into sparse vectors
GMRES | GMRES solver.
ICC | Incomplete Cholesky preconditioner without fill-in using a compressed row matrix as internal storage
ILU | ILU(0) preconditioner using a compressed row matrix as internal storage
ILUT | ILU preconditioner with fill-in.
IR | Iterative Refinement.
MatrixIterationMonitor | Iteration monitor based on matrix norms.
NoIterationReporter | An iteration reporter which does nothing.
OutputIterationReporter | Outputs iteration information to an output stream.
QMR | Quasi-Minimal Residual method.
SparseVector | Sparse vector
SSOR | SSOR preconditioner.

Exception Summary
IterativeSolverNotConvergedException | Exception for lack of convergence in a linear problem.

## Package no.uib.cipr.matrix.sparse Description

Unstructured sparse matrices and vectors with iterative solvers and preconditioners. The classes and interfaces can be grouped as follows:

- General sparse matrices
  - CompRowMatrix - Compressed row storage. Generally the best sparse matrix if the non-zero structure is known.
  - CompColMatrix - Compressed column storage.
  - CompDiagMatrix - Compressed diagonal storage.
  - FlexCompRowMatrix - Flexible compressed row storage. Stores each row as a growable sparse vector.
  - FlexCompColMatrix - Flexible compressed column storage. Stores each column as a growable sparse vector.
  - SparseVector - Growable sparse vector.
- Iterative solvers
  - BiCG - BiConjugate gradients.
  - BiCGstab - BiConjugate gradients stabilized.
  - CG - Conjugate gradients.
  - CGS - Conjugate gradients squared.
  - Chebyshev - The Chebyshev iteration for symmetrical, positive definite matrices.
  - GMRES - Generalized minimal residual using restart.
  - IR - Iterative refinement (Richardson's method).
  - QMR - Quasi-minimal residual.
- Preconditioners
  - DiagonalPreconditioner - Diagonal preconditioning.
  - SSOR - Symmetrical sucessive overrelaxation.
  - ICC - Incomplete Cholesky without fill-in.
  - ILU - Incomplete LU without fill-in.
  - ILUT - Incomplete LU with fill-in using a threshold approach.
  - AMG - Algebraic multigrid by smoothed aggregation.

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