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ilut.hpp File Reference

Implementations of an incomplete factorization preconditioner with threshold (ILUT) More...

`#include <vector>`
`#include <cmath>`
`#include <iostream>`
`#include "viennacl/forwards.h"`
`#include "viennacl/tools/tools.hpp"`
`#include "viennacl/linalg/detail/ilu/common.hpp"`
`#include "viennacl/compressed_matrix.hpp"`
`#include "viennacl/linalg/host_based/common.hpp"`
`#include <map>`

Go to the source code of this file.

## Classes

class | viennacl::linalg::ilut_tag
| A tag for incomplete LU factorization with threshold (ILUT) More...
struct | viennacl::linalg::detail::ilut_sparse_vector< NumericT >
| Helper struct for holding a sparse vector in linear memory. For internal use only. More...
class | viennacl::linalg::ilut_precond< MatrixT >
| ILUT preconditioner class, can be supplied to solve()-routines. More...
class | viennacl::linalg::ilut_precond< viennacl::compressed_matrix< NumericT, AlignmentV > >
| ILUT preconditioner class, can be supplied to solve()-routines. More...

## Namespaces

| viennacl
| Main namespace in ViennaCL. Holds all the basic types such as vector, matrix, etc. and defines operations upon them.
| viennacl::linalg
| Provides all linear algebra operations which are not covered by operator overloads.
| viennacl::linalg::detail
| Namespace holding implementation details for linear algebra routines. Usually not of interest for a library user.

## Functions

template<typename IndexT , typename NumericT >
IndexT | viennacl::linalg::detail::merge_subtract_sparse_rows (IndexT const *w_coords, NumericT const *w_elements, IndexT w_size, IndexT const *u_coords, NumericT const *u_elements, IndexT u_size, NumericT alpha, IndexT *z_coords, NumericT *z_elements)
| Subtracts a scaled sparse vector u from a sparse vector w and writes the output to z: z = w - alpha * u. More...
template<typename SizeT , typename NumericT >
void | viennacl::linalg::detail::insert_with_value_sort (std::vector< std::pair< SizeT, NumericT > > &map, SizeT index, NumericT value)
template<typename NumericT >
void | viennacl::linalg::precondition (viennacl::compressed_matrix< NumericT > const &A, viennacl::compressed_matrix< NumericT > &L, viennacl::compressed_matrix< NumericT > &U, ilut_tag const &tag)
| Implementation of a ILU-preconditioner with threshold. Optimized implementation for compressed_matrix. More...

## Detailed Description

Implementations of an incomplete factorization preconditioner with threshold (ILUT)

Definition in file ilut.hpp.