gurobi定义分段目标函数代码
时间: 2023-04-02 21:00:30 浏览: 101
以下是一个使用 Gurobi 定义分段目标函数的示例代码:
```
#include <gurobi_c++.h>
using namespace std;
int main(int argc, char *argv[]) {
try {
GRBEnv env = GRBEnv();
GRBModel model = GRBModel(env);
// 定义变量
GRBVar x = model.addVar(., GRB_INFINITY, ., GRB_CONTINUOUS, "x");
GRBVar y = model.addVar(., GRB_INFINITY, ., GRB_CONTINUOUS, "y");
// 定义分段函数
GRBQuadExpr obj = ;
obj += (x <= 1) * (x + y);
obj += (x > 1) * (2 * x + y);
// 设置目标函数
model.setObjective(obj, GRB_MINIMIZE);
// 求解模型
model.optimize();
// 输出结果
cout << "x = " << x.get(GRB_DoubleAttr_X) << endl;
cout << "y = " << y.get(GRB_DoubleAttr_X) << endl;
cout << "Obj = " << model.get(GRB_DoubleAttr_ObjVal) << endl;
} catch (GRBException e) {
cout << "Error code = " << e.getErrorCode() << endl;
cout << e.getMessage() << endl;
} catch (...) {
cout << "Exception during optimization" << endl;
}
return ;
}
```
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