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int GRBgetgenconstrAbs ( GRBmodel *model,
    int id,
    int *resvarP,
    int *argvarP )

Retrieve the data associated with a general constraint of type ABS. Calling this method for a general constraint of a different type leads to an error return code. You can query the GenConstrType attribute to determine the type of the general constraint.

See also GRBaddgenconstrAbs for a description of the semantics of this general constraint type.

Return value:

A non-zero return value indicates that a problem occurred while retrieving the data of the general constraint. 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 to which the new general constraint should be added.

id: The index of the general constraint to retrieve.

Note that any of the following arguments can be NULL.

resvarP: The variable index associated with the resultant variable of the constraint.

argvarP: The variable index associated with the argument variable of the constraint.

Example usage:

  int type;
  int resvar;
  int argvar;

  error = GRBgetintattrelement(model, GRB_INT_ATTR_GENCONSTRTYPE, 3, &type);
  if (type == GRB_GENCONSTR_ABS) {
    error = GRBgetgenconstrAbs(model, 3, &resvar, &argvar);

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