CGAL users discussion list

[Michael George <>]

I am using the 2D Nef polyhedra package with a custom exact number type 
(rationals adjoin sqrt(2) and sqrt(3)).  I'm receiving the following 
assertion:

what: CGAL ERROR: assertion violation!
Expr: *succ == &sh || orientation(succ, p_sweep) < 0
File: /usr/include/CGAL/Nef_2/Segment_overlay_traits.h
Line: 766


I am guessing this is due to an error in my number implementation.  Is 
there any way to automatically determine if I have correctly implemented 
the FT concept?  Does anyone have any recommendations for debugging this?

--Mike