int GRBgetdblattr ( GRBmodel *model,
    const char *attrname,
    double *valueP )

Query the value of a double-valued model 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 model attribute. Available attributes are listed and described in the Attributes section of this document.

valueP: The location in which the current value of the requested attribute should be placed.

Important note:

Note that this method should be used for scalar attributes only (i.e., model attributes). To query a single element of an array attribute, use GRBgetdblattrelement instead.

Example usage:

  error = GRBgetdblattr(model, "ObjCon", &objcon);