template <class MATR> void Pencil <MATR> ::dcmp_QR () template <class MATR> void Pencil <MATR> ::dcmp_QR () QR decomposittion of the pencil
QR decomposittion of the pencil. The first matrix of the pencil is upper-triangular. The operations on the first matrix are also performed on the other matrices of the pencil.
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