CGAL users discussion list

[Sylvain Pion <>]

Le 05/02/10 10:37, Junjie Cao a écrit :
> Dear Pion,
>
>     #include <CGAL/Filtered_exact.h>
>
>       typedef CGAL::Filtered_exact<double, CGAL::MP_Float> NT;
>
>       typedef CGAL::Cartesian<NT>  K;
>
>     * "typedef CGAL::Exact_predicates_inexact_constructions_kernel K" is
>       OK. But the NT will be used define some other variables.
>       What should I define NT?  I use "typedef double NT" now.

"typedef double NT" is fine.
"typedef K::NT" is slightly better from some point of view, but in this
case will be exactly the same.

>     * There is also another error: 'det3x3_by_formula' : is not a member
>       of 'CGAL'.

It has been renamed to "determinant"  (in <CGAL/determinant.h>).
Note that this particular function is not documented.  You may prefer
to use the documented interface if you expect your program to continue
to work in the future (not that we never break the API, but certainly
the probability of a change in the undocumented part is definitely higher).

--
Sylvain Pion
INRIA Sophia Antipolis
Geometrica Project-Team
CGAL, http://cgal.org/