smod_qz_direct Submodule

Submodule containing the implementation of the QZ-direct algorithm. We keep the general form of the eigenvalue problem $$\mathcal{A}\textbf{X} = \omega\mathcal{B}\textbf{X}\ $$ and solve this directly by calling LAPACK's zggev3 routine.

Contents

Module Procedures

qz_direct

Module Procedures

module procedure qz_direct module module subroutine qz_direct(matrix_A, matrix_B, settings, omega, vr) Interface →

Solves the eigenvalue problem directly.

Arguments

Type	Intent	Optional	Attributes		Name
type(matrix_t),	intent(in)			::	matrix_A	matrix A
type(matrix_t),	intent(in)			::	matrix_B	matrix B
type(settings_t),	intent(in)			::	settings	settings object
complex(kind=dp),	intent(out)			::	omega(:)	array with eigenvalues
complex(kind=dp),	intent(out)			::	vr(:,:)	array with right eigenvectors