Updates the nodal sets that had ambiguous unions with the inapplicable state and calculates steps involving applicable states after the update. Because this function needs to be fairly high-performance, it does not do much checking for parameter validity, thus unsafe usage of this function might not be caught. It is up to calling functions to ensure that the appropriate parameters have been set before use.
mpl_second_down_recon(node_id, left_id, right_id, morphyobj)The index of the node being reconstructed.
The index of the left descendant.
The index of the right descendant.
An instance of the Morphy object.
The index of the immediate ancestor of the node.
The integral parsimony length (right now)