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 virtual void _eraseCol(int i); |
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42 /// \e |
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43 virtual void _eraseRow(int i); |
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44 /// \e |
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45 |
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46 /// \warning Arrays are indexed from 1 (datum at index 0 is ignored) |
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47 /// |
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48 virtual void _setRowCoeffs(int i, |
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49 int length, |
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50 int const * indices, |
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51 Value const * values ); |
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52 /// \e |
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53 |
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54 /// \warning Arrays are indexed from 1 (datum at index 0 is ignored) |
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55 /// |
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56 virtual void _setColCoeffs(int i, |
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57 int length, |
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58 int const * indices, |
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59 Value const * values ); |
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60 |
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61 /// Set one element of the coefficient matrix |
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62 virtual void _setCoeff(int row, int col, Value value); |
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63 |
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64 /// The lower bound of a variable (column) have to be given by an |
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65 /// extended number of type Value, i.e. a finite number of type |
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66 /// Value or -\ref INF. |
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67 virtual void _setColLowerBound(int i, Value value); |
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68 /// \e |
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69 |
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70 /// The upper bound of a variable (column) have to be given by an |
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71 /// extended number of type Value, i.e. a finite number of type |
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72 /// Value or \ref INF. |
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73 virtual void _setColUpperBound(int i, Value value); |
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74 /// \e |
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75 |
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76 // /// The lower bound of a linear expression (row) have to be given by an |
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77 // /// extended number of type Value, i.e. a finite number of type |
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78 // /// Value or -\ref INF. |
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79 // virtual void _setRowLowerBound(int i, Value value); |
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80 // /// \e |
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81 |
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82 // /// The upper bound of a linear expression (row) have to be given by an |
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83 // /// extended number of type Value, i.e. a finite number of type |
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84 // /// Value or \ref INF. |
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85 // virtual void _setRowUpperBound(int i, Value value); |
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86 |
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87 /// The lower and upper bound of a linear expression (row) have to be |
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88 /// given by an |
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89 /// extended number of type Value, i.e. a finite number of type |
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90 /// Value or +/-\ref INF. |
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91 virtual void _setRowBounds(int i, Value lb, Value ub); |
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92 /// \e |
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93 |
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94 |
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95 /// \e |
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96 virtual void _clearObj(); |
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97 /// \e |
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98 virtual void _setObjCoeff(int i, Value obj_coef); |
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99 |
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100 ///\e |
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101 |
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102 ///\bug Wrong interface |
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103 /// |
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104 virtual SolveExitStatus _solve(); |
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105 |
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106 ///\e |
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107 |
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108 ///\bug Wrong interface |
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109 /// |
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110 virtual Value _getPrimal(int i); |
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111 ///\e |
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112 |
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113 ///\bug Wrong interface |
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114 /// |
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115 virtual Value _getPrimalValue(); |
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116 ///\e |
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117 |
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118 ///\bug Wrong interface |
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119 /// |
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120 virtual SolutionStatus _getPrimalStatus(); |
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121 |
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122 ///\e |
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123 virtual void _setMax(); |
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124 ///\e |
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125 virtual void _setMin(); |
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126 |
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127 |
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128 public: |
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129 LpSkeleton() : LpSolverBase(), col_num(0), row_num(0) {} |
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130 }; |
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131 |
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132 } //namespace lemon |
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133 |
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134 #endif // LEMON_LP_SKELETON |
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