int get_edge(int v1,int v2)
| Parameter | Type | Description |
|---|---|---|
| v1 | int | first vertex defining the edge |
| v2 | int | second vertex defining the edge |
Retuns the index into the edges array for the specified edge (v1,v2) or -1 if edge is not in edges list.
This function is used for finding the index into the edges array for a specified edge difined by a pair of vertices (v1,v2). The order of the pair is not inportant as edge (v1,v2) is the same as edge (v2,v1).