int GRBgetdblattrlist ( GRBmodel *model,
    const char *attrname,
    int len,
    int *ind,
    double *values )

Query the values of a double-valued array attribute.

Return value:

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


model: A loaded optimization model, typically created by routine GRBnewmodel or GRBreadmodel.

attrname: The name of a double-valued array attribute. Available attributes are listed and described in the Attributes section of this document.

len: The number of attribute elements to retrive.

ind: The indices of the desired attribute elements.

values: A pointer to the location where the requested attribute elements should be returned. Note that the result array must be as long as the requested index list.

Example usage:

  int desired[] = {0, 2, 4, 6};
  double x[4];
  error = GRBgetdblattrlist(model, "X", 4, desired, cbasis);