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1 /* -*- C++ -*- |
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2 * src/lemon/lp_glpk.h - Part of LEMON, a generic C++ optimization library |
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3 * |
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4 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 * (Egervary Combinatorial Optimization Research Group, EGRES). |
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6 * |
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7 * Permission to use, modify and distribute this software is granted |
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8 * provided that this copyright notice appears in all copies. For |
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9 * precise terms see the accompanying LICENSE file. |
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10 * |
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11 * This software is provided "AS IS" with no warranty of any kind, |
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12 * express or implied, and with no claim as to its suitability for any |
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13 * purpose. |
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14 * |
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15 */ |
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16 |
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17 #ifndef LEMON_LP_GLPK_H |
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18 #define LEMON_LP_GLPK_H |
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19 |
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20 ///\file |
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21 ///\brief Header of the LEMON-GLPK lp solver interface. |
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22 |
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23 #include "lp_base.h" |
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24 extern "C" { |
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25 #include "glpk.h" |
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26 } |
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27 |
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28 namespace lemon { |
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29 |
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30 |
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31 /// \brief Wrapper for GLPK solver |
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32 /// |
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33 /// This class implements a lemon wrapper for GLPK. |
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34 class LpGlpk : public LpSolverBase { |
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35 |
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36 public: |
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37 |
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38 typedef LpSolverBase Parent; |
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39 |
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40 /// \e |
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41 LPX* lp; |
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42 |
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43 /// \e |
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44 LpGlpk() : Parent(), |
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45 lp(lpx_create_prob()) { |
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46 lpx_set_int_parm(lp, LPX_K_DUAL, 1); |
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47 } |
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48 /// \e |
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49 ~LpGlpk() { |
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50 lpx_delete_prob(lp); |
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51 } |
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52 |
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53 protected: |
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54 virtual int _addCol(); |
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55 virtual int _addRow(); |
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56 virtual void _setRowCoeffs(int i, |
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57 int length, |
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58 int * indices, |
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59 Value * values ); |
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60 virtual void _setColCoeffs(int i, |
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61 int length, |
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62 int * indices, |
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63 Value * values); |
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64 virtual void _setColLowerBound(int i, Value value); |
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65 virtual void _setColUpperBound(int i, Value value); |
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66 virtual void _setRowLowerBound(int i, Value value); |
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67 virtual void _setRowUpperBound(int i, Value value); |
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68 virtual void _setObjCoeff(int i, Value obj_coef); |
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69 |
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70 }; |
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71 } //END OF NAMESPACE LEMON |
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72 |
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73 #endif //LEMON_LP_GLPK_H |
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74 |