ILOG CPLEX C++ API 9.0 Reference Manual

IloCplex::BarrierCallbackI
CallbackI::abort, CallbackI::duplicateCallback, CallbackI::getEnv,
CallbackI::getModel, CallbackI::getNcols, CallbackI::getNQCs,
CallbackI::getNrows, CallbackI::main
Description
See Also
Constructors
Methods
An instance of the class IloCplex::BarrierCallbackI represents a user-written
callback in an application that uses an instance of IloCplex to solve a problem by
means of the barrier optimizer. IloCplex calls the user-written callback after each
iteration during optimization with the barrier method. If an attempt is made to access
information not available to an instance of this class, an exception is thrown.
The constructor and methods of this class are for use in deriving a user-written callback
class and in implementing the main method there.
For more information about the barrier optimizer, see the ILOG CPLEX User's Manual.
ILOBARRIERCALLBACK0, IloCplex, IloCplex::Callback,
IloCplex::CallbackI, IloCplex::ContinuousCallbackI
protected BarrierCallbackI()
This constructor creates a callback for use in an application of the barrier optimizer.
protected IloNum getDualObjValue()
This method returns the current dual objective value of the solution in the instance of
IloCplex at the time the invoking callback is executed.
ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 79