PK_ERROR_code_t   PK_CURVE_ask_edges_nmnl
(
--- received arguments ---
PK_CURVE_t        curve,            --- a curve

--- returned arguments ---
int        *const n_edges,          --- number of edges (>= 0)
PK_EDGE_t **const edges             --- edges (optional)
)


This function returns the set of edges to which the given curve is attached,
either as the curve of an accurate edge or as the nominal curve of a tolerant
edge.


The output array edges is optional. If it is set to NULL, the function
will only compute the number of edges.