Abs function in Cpp

回答済み

Nooshin Heidari

2024年08月13日 14:22

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I need to define the absolute value of some varibales in cpp and I have used the provided syntax like :

            for (int v = 1; v <= nVehicles; v++) {
                for (int i = 1; i <= NA[v - 1].size(); i++) {
                    for (int m = 1; m <= Mu[(NA[v - 1][i - 1]) - 1]; m++) {
                        GRBVar ABS;
                        model->addConstr(ABS == abs_(gap_prev[v][NA[v - 1][i - 1]][m]));}}}

but still I get the error as :"identifier abs_" is undefined! Would you please help me to know the problem?

 

関連

• General Constraints

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• 

  Riley Clement

  • Gurobi Staff

  2024年08月13日 23:53

  Hi Nooshin,

  abs_ is a function from our Python API and does not exist in the C++ API.

  Please use GRBModel::addGenConstrAbs()

  - Riley

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