lahqr_shiftcolumn.hpp File Reference

#include "tlapack/base/utils.hpp"

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Functions
template<TLAPACK_MATRIX matrix_t, TLAPACK_VECTOR vector_t, enable_if_t< is_real< type_t< matrix_t > >, bool > = true>
int	tlapack::lahqr_shiftcolumn (const matrix_t &H, vector_t &v, complex_type< type_t< matrix_t > > s1, complex_type< type_t< matrix_t > > s2)
	Given a 2-by-2 or 3-by-3 matrix H, lahqr_shiftcolumn calculates a multiple of the product: (H - s1*I)*(H - s2*I)*e1.
template<TLAPACK_MATRIX matrix_t, TLAPACK_VECTOR vector_t, enable_if_t< is_complex< type_t< matrix_t > >, bool > = true>
int	tlapack::lahqr_shiftcolumn (const matrix_t &H, vector_t &v, type_t< matrix_t > s1, type_t< matrix_t > s2)
	Given a 2-by-2 or 3-by-3 matrix H, lahqr_shiftcolumn calculates a multiple of the product: (H - s1*I)*(H - s2*I)*e1.

Detailed Description

Author

Thijs Steel, KU Leuven, Belgium Adapted from

See also

https://github.com/Reference-LAPACK/lapack/tree/master/SRC/dlaqr1.f