CGAL users discussion list

[Marc Glisse <>]

On Sun, 27 Oct 2013, Samaras wrote:

>   I want to compute the norm() of point in D dimension. I am extending the
> point_d class.
>   I use these typedefs:
>   #include <CGAL/Cartesian_d.h>
>   #include <CGAL/Gmpq.h>
>
>   typedef CGAL::Gmpq              NT;
[...]
> What is the newbie missing?

That it doesn't make sense to compute the square root of an exact rational 
number, because the exact rational type won't be able to represent the 
result? If you only want something approximate, feel free to convert to 
double and then compute the square root of that.

--
Marc Glisse