1/* $Id: ClpCholeskyWssmpKKT.hpp 1665 2011-01-04 17:55:54Z lou $ */
2// Copyright (C) 2004, International Business Machines
3// Corporation and others. All Rights Reserved.
4// This code is licensed under the terms of the Eclipse Public License (EPL).
5
6#ifndef ClpCholeskyWssmpKKT_H
7#define ClpCholeskyWssmpKKT_H
8
9#include "ClpCholeskyBase.hpp"
10class ClpMatrixBase;
11class ClpCholeskyDense;
12
13
14/** WssmpKKT class for Clp Cholesky factorization
15
16*/
17class ClpCholeskyWssmpKKT : public ClpCholeskyBase {
18
19public:
20 /**@name Virtual methods that the derived classes provides */
21 //@{
22 /** Orders rows and saves pointer to matrix.and model.
23 Returns non-zero if not enough memory */
24 virtual int order(ClpInterior * model) override ;
25 /** Does Symbolic factorization given permutation.
26 This is called immediately after order. If user provides this then
27 user must provide factorize and solve. Otherwise the default factorization is used
28 returns non-zero if not enough memory */
29 virtual int symbolic() override;
30 /** Factorize - filling in rowsDropped and returning number dropped.
31 If return code negative then out of memory */
32 virtual int factorize(const double * diagonal, int * rowsDropped) override ;
33 /** Uses factorization to solve. */
34 virtual void solve (double * region) override ;
35 /** Uses factorization to solve. - given as if KKT.
36 region1 is rows+columns, region2 is rows */
37 virtual void solveKKT (double * region1, double * region2, const double * diagonal,
38 double diagonalScaleFactor) override;
39 //@}
40
41
42 /**@name Constructors, destructor */
43 //@{
44 /** Constructor which has dense columns activated.
45 Default is off. */
46 ClpCholeskyWssmpKKT(int denseThreshold = -1);
47 /** Destructor */
48 virtual ~ClpCholeskyWssmpKKT();
49 // Copy
50 ClpCholeskyWssmpKKT(const ClpCholeskyWssmpKKT&);
51 // Assignment
52 ClpCholeskyWssmpKKT& operator=(const ClpCholeskyWssmpKKT&);
53 /// Clone
54 virtual ClpCholeskyBase * clone() const override ;
55 //@}
56
57
58private:
59 /**@name Data members */
60 //@{
61 //@}
62};
63
64#endif
65