5a8bc724e63abfd1051501dc6391a80d89224d7c
5 extern struct path
*optimize(struct path
*first_path
);
6 struct path
*split_paths(struct path
*source
);
7 struct path
*join_paths(struct path
*source
);
8 extern void round_path(struct path
*input
);
9 extern int equal(struct point
*a
, struct point
*b
);