get_LU_factorisation_banded Subroutine

public subroutine get_LU_factorisation_banded(bandmatrix, LU, ipiv)

Calculates the LU factorisation of a complex banded matrix $A$. Uses the LAPACK routine zgbtrf.

Arguments

Type	Intent	Optional	Attributes		Name
type(banded_matrix_t),	intent(in)			::	bandmatrix	the banded $A$-matrix on the left-hand side
complex(kind=dp),	intent(out),		allocatable	::	LU(:,:)	the LU factorisation of $A$
integer,	intent(out),		allocatable	::	ipiv(:)	the pivoting information after factorisation

Contents

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