1 | // -*- c++ -*- |
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2 | #ifndef LEMON_LP_SOLVER_BASE_H |
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3 | #define LEMON_LP_SOLVER_BASE_H |
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4 | |
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5 | ///\ingroup misc |
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6 | ///\file |
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7 | |
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8 | // #include <stdio.h> |
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9 | #include <stdlib.h> |
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10 | #include <iostream> |
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11 | #include <map> |
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12 | #include <limits> |
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13 | // #include <stdio> |
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14 | //#include <stdlib> |
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15 | |
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16 | #include <iostream> |
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17 | #include <vector> |
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18 | #include <string> |
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19 | #include <list> |
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20 | #include <memory> |
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21 | #include <utility> |
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22 | |
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23 | //#include <lemon/invalid.h> |
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24 | //#include <expression.h> |
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25 | //#include <stp.h> |
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26 | //#include <lemon/max_flow.h> |
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27 | //#include <augmenting_flow.h> |
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28 | //#include <iter_map.h> |
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29 | |
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30 | using std::cout; |
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31 | using std::cin; |
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32 | using std::endl; |
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33 | |
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34 | namespace lemon { |
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35 | |
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36 | template <typename _Value> |
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37 | class LpSolverBase { |
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38 | |
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39 | /*! @name Uncategorized functions and types (public members) |
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40 | */ |
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41 | //@{ |
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42 | public: |
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43 | |
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44 | //UNCATEGORIZED |
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45 | |
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46 | /// \e |
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47 | typedef _Value Value; |
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48 | /// \e |
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49 | static const Value INF; |
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50 | public: |
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51 | /// \e |
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52 | LpSolverBase() { } |
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53 | /// \e |
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54 | virtual ~LpSolverBase() { } |
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55 | |
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56 | /*! @name Low level interface (protected members) |
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57 | Problem manipulating functions in the low level interface |
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58 | */ |
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59 | //@{ |
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60 | protected: |
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61 | |
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62 | //MATRIX MANIPULATING FUNCTIONS |
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63 | |
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64 | /// \e |
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65 | virtual int _addCol() = 0; |
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66 | /// \e |
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67 | virtual int _addRow() = 0; |
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68 | /// \e |
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69 | virtual void _eraseCol(int i) = 0; |
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70 | /// \e |
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71 | virtual void _eraseRow(int i) = 0; |
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72 | /// \e |
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73 | virtual void _setRowCoeffs(int i, |
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74 | const std::vector<std::pair<int, Value> >& coeffs) = 0; |
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75 | /// \e |
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76 | /// This routine modifies \c coeffs only by the \c push_back method. |
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77 | virtual void _getRowCoeffs(int i, |
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78 | std::vector<std::pair<int, Value> >& coeffs) = 0; |
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79 | /// \e |
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80 | virtual void _setColCoeffs(int i, |
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81 | const std::vector<std::pair<int, Value> >& coeffs) = 0; |
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82 | /// \e |
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83 | /// This routine modifies \c coeffs only by the \c push_back method. |
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84 | virtual void _getColCoeffs(int i, |
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85 | std::vector<std::pair<int, Value> >& coeffs) = 0; |
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86 | /// \e |
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87 | virtual void _setCoeff(int col, int row, Value value) = 0; |
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88 | /// \e |
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89 | virtual Value _getCoeff(int col, int row) = 0; |
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90 | // public: |
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91 | // /// \e |
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92 | // enum Bound { FREE, LOWER, UPPER, DOUBLE, FIXED }; |
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93 | protected: |
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94 | /// \e |
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95 | /// The lower bound of a variable (column) have to be given by an |
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96 | /// extended number of type Value, i.e. a finite number of type |
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97 | /// Value or -INF. |
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98 | virtual void _setColLowerBound(int i, Value value) = 0; |
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99 | /// \e |
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100 | /// The lower bound of a variable (column) is an |
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101 | /// extended number of type Value, i.e. a finite number of type |
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102 | /// Value or -INF. |
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103 | virtual Value _getColLowerBound(int i) = 0; |
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104 | /// \e |
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105 | /// The upper bound of a variable (column) have to be given by an |
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106 | /// extended number of type Value, i.e. a finite number of type |
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107 | /// Value or INF. |
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108 | virtual void _setColUpperBound(int i, Value value) = 0; |
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109 | /// \e |
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110 | /// The upper bound of a variable (column) is an |
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111 | /// extended number of type Value, i.e. a finite number of type |
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112 | /// Value or INF. |
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113 | virtual Value _getColUpperBound(int i) = 0; |
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114 | /// \e |
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115 | /// The lower bound of a linear expression (row) have to be given by an |
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116 | /// extended number of type Value, i.e. a finite number of type |
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117 | /// Value or -INF. |
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118 | virtual void _setRowLowerBound(int i, Value value) = 0; |
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119 | /// \e |
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120 | /// The lower bound of a linear expression (row) is an |
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121 | /// extended number of type Value, i.e. a finite number of type |
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122 | /// Value or -INF. |
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123 | virtual Value _getRowLowerBound(int i) = 0; |
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124 | /// \e |
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125 | /// The upper bound of a linear expression (row) have to be given by an |
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126 | /// extended number of type Value, i.e. a finite number of type |
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127 | /// Value or INF. |
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128 | virtual void _setRowUpperBound(int i, Value value) = 0; |
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129 | /// \e |
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130 | /// The upper bound of a linear expression (row) is an |
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131 | /// extended number of type Value, i.e. a finite number of type |
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132 | /// Value or INF. |
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133 | virtual Value _getRowUpperBound(int i) = 0; |
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134 | /// \e |
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135 | virtual void _setObjCoeff(int i, Value obj_coef) = 0; |
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136 | /// \e |
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137 | virtual Value _getObjCoeff(int i) = 0; |
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138 | |
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139 | //SOLUTION RETRIEVING |
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140 | |
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141 | /// \e |
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142 | virtual Value _getPrimal(int i) = 0; |
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143 | //@} |
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144 | |
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145 | |
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146 | |
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147 | /*! @name MIP functions and types (public members) |
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148 | */ |
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149 | //@{ |
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150 | protected: |
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151 | /// \e |
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152 | virtual void _setColCont(int i) = 0; |
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153 | /// \e |
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154 | virtual void _setColInt(int i) = 0; |
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155 | /// \e |
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156 | virtual Value _getMIPPrimal(int i) = 0; |
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157 | //@} |
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158 | }; |
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159 | |
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160 | } //namespace lemon |
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161 | |
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162 | #endif //LEMON_LP_SOLVER_BASE_H |
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