Method: Cbc::Model#solve

Defined in:
lib/cbc/model.rb

#solve(log_level: nil, time_limit: nil) ⇒ Object 



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# File 'lib/cbc/model.rb', line 59

def solve(log_level: nil, time_limit: nil)
  with_options(log_level: log_level, time_limit: time_limit) do
    # do not check status
    FFI.Cbc_solve(model)
  end

  num_cols = FFI.Cbc_getNumCols(model)

  status = FFI::STATUS[FFI.Cbc_status(model)]
  secondary_status = FFI::SECONDARY_STATUS[FFI.Cbc_secondaryStatus(model)]

  ret_status =
    case status
    when :not_started
      if FFI.Cbc_isInitialSolveProvenOptimal(model) != 0
        :optimal
      elsif FFI.Cbc_isInitialSolveProvenPrimalInfeasible(model) != 0
        :primal_infeasible
      else
        secondary_status
      end
    when :finished
      if FFI.Cbc_isProvenOptimal(model) != 0
        :optimal
      elsif FFI.Cbc_isProvenInfeasible(model) != 0
        :infeasible
      else
        secondary_status
      end
    else
      secondary_status
    end

  {
    status: ret_status,
    objective: FFI.Cbc_getObjValue(model),
    primal_col: read_double_array(FFI.Cbc_getColSolution(model), num_cols)
  }
end