CGAL::has_in_x_range

#include <CGAL/global_functions_circular_kernel_2.h>

bool has_in_x_range ( Circular_arc_2<CircularKernel> ca, Circular_arc_point_2<CircularKernel> p)
Checks whether the point lies in the vertical range defined by the arc.

bool has_in_x_range ( Line_arc_2<CircularKernel> ca, Circular_arc_point_2<CircularKernel> p)
Checks whether the point lies in the vertical range defined by the line segment.