ILOG CPLEX C++ API 9.0 Reference Manual

IloCplex
This method reads a model from the file indicated by filename into model. Note,
that the invoking IloCplex object is not affected when calling this method unless
model is its active model. It places the objective it has read in obj, the variables it has
read in the array vars, the ranges it has read in the array rngs; and the Special
Ordered Sets it has read in the arrays sos1 and sos2.
Note: CPLEX resizes these arrays for you to accomodate the returned
objects.
Note: This notes is for advanced users only. The two arrays lazy and cuts are
filled with the lazy constraints and user cuts that may be included in the model in
file filename.
public IloBool isDualFeasible()
This method returns IloTrue if a dual feasible solution is recorded in the invoking
IloCplex object and can be queried.
public IloBool isMIP()
This method returns IloTrue if the invoking algorithm has extracted a model that is a
MIP (mixed-integer programming problem) and IloFalse otherwise. Member
functions for accessing duals and reduced cost basis work only if the model is not a MIP.
public IloBool isPrimalFeasible()
This method returns IloTrue if a primal feasible solution is recorded in the invoking
IloCplex object and can be queried.
public IloBool isQC()
This method returns IloTrue if the invoking algorithm has extracted a model that is
quadratically constrained. Otherwise, it returns IloFalse. For an explanation of
quadratically constrained see the topic QCP in the ILOG CPLEX User's Manual.
public IloBool isQO()
This method returns IloTrue if the invoking algorithm has extracted a model that has
quadratic objective function terms. Otherwise, it returns IloFalse.
public static IloCplex::Goal LimitSearch(IloCplex cplex,
IloCplex::Goal goal,
IloCplex::SearchLimit limit)
ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 69