int GRBgetcoeff ( GRBmodel *model,
    int constrind,
    int varind,
    double *valP )

Retrieve a single constraint matrix coefficient.

Return value:

A non-zero return value indicates that a problem occurred while retrieving the coefficient. Refer to the Error Code table for a list of possible return values. Details on the error can be obtained by calling GRBgeterrormsg.


model: The model from which the coefficient should be retrieved.

constrind: The constraint index for the desired coefficient.

varind: The variable index for the desired coefficient.

valP: The location in which the requested matrix coefficient should be placed.

Example usage:

  double A12;
  error = GRBgetcoeff(model, 1, 2, &A12);