CGAL users discussion list

[Alexander Kobel <>]

On 2010-10-05 17:50, Lukasz Kaczmarczyk wrote:
> Hello,
> Thanks for help. I try to use Simple_cartesian, but it not helps. In addition 
> to use of Simple_cartesian, It looks that I should switch off assertion 
> exceptions. How I can do that?

> > > I like to use valgrind with cglal, however I get this error: [...]
> > > terminate called after throwing an instance of 'CGAL::Assertion_exception'
> > >   what():  CGAL ERROR: assertion violation!
> > > Expr: -CGAL_IA_MUL(-1.1, 10.1) != CGAL_IA_MUL(1.1, 10.1)
> > > File: /opt/local/include/CGAL/Interval_nt.h
> > > Line: 158 [...]

#define CGAL_DISABLE_ROUNDING_MATH_CHECK

at the top of your program (before including any CGAL headers) should be 
enough. Also, make sure that you compile with -frounding-math.


HTH,
Alexander