Runge |
Element 0 contains the slope at x_previous.
Elements 1.._numberOfStages-1 contain the slopes of the stages.
If this is a non-FSAL method, then element[_numberOfStages] is reserved for the slope at x_current.
If _numberOfAdditionalStagesForDenseOutput is > 0, then follows _numberOfAdditionalStagesForDenseOutput elements to accomodate the slopes of the additional stages needed for dense output.