real_type< TX, TY > lapy2(const TX &x, const TY &y)
Finds , taking care not to cause unnecessary overflow.
Definition lapy2.hpp:32
void lahqr_schur22(T &a, T &b, T &c, T &d, complex_type< T > &s1, complex_type< T > &s2, T &cs, T &sn)
Computes the Schur factorization of a 2x2 matrix A.
Definition lahqr_schur22.hpp:44
typename traits::real_type_traits< Types..., int >::type real_type
The common real type of the list of types.
Definition scalar_type_traits.hpp:113