PK_FIN_ask_previous_of_edge

PK_ERROR_code_t PK_FIN_ask_previous_of_edge
(
--- received arguments ---
PK_FIN_t        fin,               --- a fin

--- returned arguments ---
PK_FIN_t *const previous           --- the previous fin around the edge
)


This function returns the previous fin in order around the given fin's edge.


This function could be used in conjunction with PK_EDGE_ask_first_fin to
scan the fins in an edge, one at a time, in the opposite order as returned
by PK_EDGE_ask_fins. The ordering is cyclic.