CGAL::compare_xy

Comparison_result	compare_xy ( Point_2<R> p, Point_2<R> q)
		Compares the Cartesian coordinates of points p and q lexicographically in $$xy order: first $$x-coordinates are compared, if they are equal, $$y-coordinates are compared.
Comparison_result	compare_xy ( Point_3<R> p, Point_3<R> q)
		Compares the Cartesian coordinates of points p and q lexicographically in $$xy order: first $$x-coordinates are compared, if they are equal, $$y-coordinates are compared.

See Also