Procedure GMP::SolverSession::GenerateBranchRow(solverSession, row, branch)

GMP::SolverSession::GenerateBranchRow

The procedure GMP::SolverSession::GenerateBranchRow adds a row to a branch to be taken from the current node during MIP branch-and-cut.

GMP::SolverSession::GenerateBranchRow(
     solverSession,    ! (input) a solver session
     row,              ! (input) a scalar reference
     branch            ! (input) a branch number
     )

Arguments

solverSession

An element in the set AllSolverSessions.

row

A scalar reference to an existing row in the model.

branch

An integer scalar reference to the branch number. It should be equal to 1 or 2.

Return Value

The procedure returns 1 on success, or 0 otherwise.

Note

• A branch can be specified by adding multiple rows and bound changes (with GMP::SolverSession::GenerateBranchLowerBound and GMP::SolverSession::GenerateBranchUpperBound) to the node problem.

• This procedure can only be called from within a CallbackBranch callback procedure.

• A CallbackBranch callback procedure will only be called when solving mixed integer programs with CPLEX.

See also

The procedures GMP::Instance::SetCallbackBranch, GMP::SolverSession::GenerateBranchLowerBound and GMP::SolverSession::GenerateBranchUpperBound.