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[Genís <>]

Hello,

I often get the following error when calling linear_least_squares_fitting_2:

main: /usr/include/CGAL/eigen_2.h:69: void
CGAL::CGALi::eigen_symmetric_2(const typename K::FT*, std::pair<typename
K::Vector_2, typename K::Vector_2>&, std::pair<typename K::FT, typename
K::FT>&) [with K = CGAL::Cartesian<double>]: Assertion `a == 0 || c == 0.0'
failed.

I imagine that it is caused because I don't use an exact predicates kernel,
could it be that? The problem is that when I try to use a kernel as
Cartesian<CGAL::Gmpq> I get a long compilation error.

Ciao
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