1 | /* $Id: ClpCholeskyUfl.hpp 2385 2019-01-06 19:43:06Z stefan $ */ |
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2 | // Copyright (C) 2004, International Business Machines |
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3 | // Corporation and others. All Rights Reserved. |
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4 | // This code is licensed under the terms of the Eclipse Public License (EPL). |
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5 | |
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6 | #ifndef ClpCholeskyUfl_H |
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7 | #define ClpCholeskyUfl_H |
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8 | |
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9 | #include "ClpCholeskyBase.hpp" |
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10 | |
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11 | class ClpMatrixBase; |
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12 | class ClpCholeskyDense; |
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13 | |
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14 | typedef struct cholmod_factor_struct cholmod_factor; |
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15 | typedef struct cholmod_common_struct cholmod_common; |
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16 | |
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17 | /** Ufl class for Clp Cholesky factorization |
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18 | |
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19 | If you wish to use AMD code from University of Florida see |
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20 | |
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21 | http://www.cise.ufl.edu/research/sparse/amd |
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22 | |
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23 | for terms of use |
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24 | |
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25 | If you wish to use CHOLMOD code from University of Florida see |
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26 | |
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27 | http://www.cise.ufl.edu/research/sparse/cholmod |
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28 | |
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29 | for terms of use |
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30 | |
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31 | */ |
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32 | class ClpCholeskyUfl : public ClpCholeskyBase { |
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33 | |
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34 | public: |
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35 | /**@name Virtual methods that the derived classes provides */ |
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36 | //@{ |
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37 | /** Orders rows and saves pointer to matrix.and model. |
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38 | Returns non-zero if not enough memory */ |
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39 | virtual int order(ClpInterior *model); |
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40 | /** Does Symbolic factorization given permutation using CHOLMOD (if available). |
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41 | This is called immediately after order. If user provides this then |
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42 | user must provide factorize and solve. Otherwise the default factorization is used |
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43 | returns non-zero if not enough memory. */ |
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44 | virtual int symbolic(); |
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45 | /** Factorize - filling in rowsDropped and returning number dropped using CHOLMOD (if available). |
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46 | If return code negative then out of memory */ |
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47 | virtual int factorize(const double *diagonal, int *rowsDropped); |
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48 | /** Uses factorization to solve. Uses CHOLMOD (if available). */ |
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49 | virtual void solve(double *region); |
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50 | //@} |
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51 | |
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52 | /**@name Constructors, destructor */ |
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53 | //@{ |
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54 | /** Constructor which has dense columns activated. |
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55 | Default is off. */ |
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56 | ClpCholeskyUfl(int denseThreshold = -1); |
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57 | /** Destructor */ |
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58 | virtual ~ClpCholeskyUfl(); |
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59 | /// Clone |
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60 | virtual ClpCholeskyBase *clone() const; |
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61 | //@} |
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62 | |
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63 | private: |
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64 | cholmod_factor *L_; |
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65 | cholmod_common *c_; |
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66 | |
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67 | // Copy |
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68 | ClpCholeskyUfl(const ClpCholeskyUfl &); |
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69 | // Assignment |
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70 | ClpCholeskyUfl &operator=(const ClpCholeskyUfl &); |
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71 | }; |
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72 | |
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73 | #endif |
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74 | |
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75 | /* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2 |
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76 | */ |
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