CGAL users discussion list

[Bernd Gaertner <>]

David Scriven wrote:
> In the description of min_sphere_d it suggests that one use
> min_sphere_of_spheres_d instead
> as it is "has a specialized implementation for floating-point arithmetic which
> ensures correct results in a large number of cases (including highly 
> degenerate
> ones)", which is exactly the case I have - trying to find the minimum sphere
> surrounding a collection of Cartesian points (described as doubles) in 3 
> space.
> However, I can't see how to enter a point set as an argument for 
> min_sphere_of_spheres_d. Is there an example I can look at? I'm running version
> 3.3.1 on Linux Fedora 11.

The manual page 
http://www.cgal.org/Manual/last/doc_html/cgal_manual/Bounding_volumes_ref/Class_Min_sphere_of_spheres_d.html#Cross_link_anchor_1493 
concludes with an example. If you comment out the current typedef to FT 
and comment in the one for double, you have the specialized double version.

Best,
Bernd.