compare

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CGAL::compare_z

Depending on which Cgal kernel is used, different versions of this global function are available. This is described below.

With the basic 3D Kernel (see Chapter 11)

Comparison_result	compare_z ( Point_3<Kernel> p, Point_3<Kernel> q)
		compares the z-coordinates of p and q.

With the 3D Spherical Kernel (see Chapter 14)

If this kernel is used, in addition to the function and the combination of 2D types described above, another version of the function is provided.

Comparison_result	compare_z ( Circular_arc_point_3<SphericalKernel> p, Circular_arc_point_3<SphericalKernel> q)
		compares the z-coordinates of p and q.

Comparison_result	compare_z ( Circular_arc_point_3<SphericalKernel> p, Point_3<SphericalKernel> q)
		compares the z-coordinates of p and q.