1 | /* -*- C++ -*- |
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2 | * src/lemon/lp_skeleton.h |
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3 | * - Part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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6 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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7 | * |
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8 | * Permission to use, modify and distribute this software is granted |
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9 | * provided that this copyright notice appears in all copies. For |
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10 | * precise terms see the accompanying LICENSE file. |
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11 | * |
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12 | * This software is provided "AS IS" with no warranty of any kind, |
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13 | * express or implied, and with no claim as to its suitability for any |
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14 | * purpose. |
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15 | * |
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16 | */ |
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17 | |
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18 | #ifndef LEMON_LP_SKELETON |
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19 | #define LEMON_LP_SKELETON |
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20 | |
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21 | #include <lemon/lp_base.h> |
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22 | |
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23 | ///\file |
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24 | ///\brief A skeleton file to implement LP solver interfaces |
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25 | namespace lemon { |
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26 | |
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27 | ///A skeleton class to implement LP solver interfaces |
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28 | class LpSkeleton :public LpSolverBase { |
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29 | int col_num,row_num; |
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30 | |
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31 | protected: |
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32 | ///\e |
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33 | virtual LpSolverBase &_newLp(); |
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34 | ///\e |
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35 | virtual LpSolverBase &_copyLp(); |
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36 | /// \e |
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37 | virtual int _addCol(); |
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38 | /// \e |
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39 | virtual int _addRow(); |
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40 | /// \e |
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41 | |
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42 | /// \warning Arrays are indexed from 1 (datum at index 0 is ignored) |
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43 | /// |
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44 | virtual void _setRowCoeffs(int i, |
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45 | int length, |
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46 | int const * indices, |
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47 | Value const * values ); |
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48 | /// \e |
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49 | |
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50 | /// \warning Arrays are indexed from 1 (datum at index 0 is ignored) |
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51 | /// |
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52 | virtual void _setColCoeffs(int i, |
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53 | int length, |
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54 | int const * indices, |
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55 | Value const * values ); |
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56 | |
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57 | /// \e |
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58 | |
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59 | /// The lower bound of a variable (column) have to be given by an |
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60 | /// extended number of type Value, i.e. a finite number of type |
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61 | /// Value or -\ref INF. |
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62 | virtual void _setColLowerBound(int i, Value value); |
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63 | /// \e |
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64 | |
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65 | /// The upper bound of a variable (column) have to be given by an |
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66 | /// extended number of type Value, i.e. a finite number of type |
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67 | /// Value or \ref INF. |
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68 | virtual void _setColUpperBound(int i, Value value); |
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69 | /// \e |
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70 | |
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71 | /// The lower bound of a linear expression (row) have to be given by an |
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72 | /// extended number of type Value, i.e. a finite number of type |
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73 | /// Value or -\ref INF. |
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74 | virtual void _setRowLowerBound(int i, Value value); |
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75 | /// \e |
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76 | |
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77 | /// \e |
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78 | virtual void _setRowBounds(int i, Value lb, Value ub); |
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79 | /// \e |
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80 | |
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81 | /// The upper bound of a linear expression (row) have to be given by an |
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82 | /// extended number of type Value, i.e. a finite number of type |
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83 | /// Value or \ref INF. |
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84 | virtual void _setRowUpperBound(int i, Value value); |
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85 | |
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86 | /// \e |
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87 | virtual void _clearObj(); |
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88 | /// \e |
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89 | virtual void _setObjCoeff(int i, Value obj_coef); |
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90 | |
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91 | ///\e |
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92 | |
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93 | ///\bug Wrong interface |
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94 | /// |
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95 | virtual SolveExitStatus _solve(); |
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96 | |
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97 | ///\e |
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98 | |
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99 | ///\bug Wrong interface |
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100 | /// |
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101 | virtual Value _getPrimal(int i); |
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102 | ///\e |
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103 | |
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104 | ///\bug Wrong interface |
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105 | /// |
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106 | virtual Value _getPrimalValue(); |
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107 | ///\e |
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108 | |
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109 | ///\bug Wrong interface |
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110 | /// |
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111 | virtual SolutionStatus _getPrimalStatus(); |
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112 | |
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113 | ///\e |
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114 | virtual void _setMax(); |
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115 | ///\e |
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116 | virtual void _setMin(); |
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117 | |
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118 | |
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119 | public: |
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120 | LpSkeleton() : LpSolverBase(), col_num(0), row_num(0) {} |
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121 | }; |
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122 | |
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123 | } //namespace lemon |
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124 | |
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125 | #endif // LEMON_LP_SKELETON |
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