Reconstructs the preliminary nodal set for all characters for a particular node. This function is called over a postorder sequence of internal nodes where left and right descendants are known. 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_first_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 integral parsimony length (right now)