IAimmsMathProgramCallback::RunCallback Method

Call AIMMS to run a user-defined callback procedure.

virtual _LONG_T RunCallback(
    _LONG_T flags, 
    _LONG_T prog_int[], 
    double prog_dbl[]
) = 0;

Parameters

Parameters	Description
_LONG_T flags	A bit field indicating which callback situation occurred. The flags are specified in the CallbackInfoFlag enumeration.
_LONG_T prog_int[]	Array of size IntegerCallbackInfo::CB_IMAX, indexed over the IntegerCallbackInfo enumeration, containing integer valued callback progress information.
double prog_dbl[]	Array of size DoubleCallbackInfo::CB_DMAX, indexed over the DoubleCallbackInfo enumeration, containing double-valued callback progress information.

Returns

The RunCallback method returns a value from the InterruptReturnStatus list.

Description

By calling the RunCallback method you allow AIMMS to run a user-defined callback procedure. In such a procedure the user can monitor the solution process. Before a solve, AIMMS calls the method to indicate at which moments it expects the solver to run this callback. Possible moments are:

n iterations have passed.
Change of state, e.g., from infeasible to feasible.
New integer solution found.
New incumbent found.
After selecting a branch.
After solving a subproblem to allow the user to call a heuristic.
After solving node problem to allow the user to add user cuts.

Remarks

For more information on user defined solver callbacks, see Section Suffices and callbacks of the Language Reference.

Group

IAimmsMathProgramCallback Methods

Links

IAimmsMathProgramCallback Class, IAimmsMathProgramCallback Members, IAimmsMathProgramCallback Methods

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