rank1_update Interface

public interface rank1_update

An interface to the rank-1 update routines.

Module Procedures

private subroutine rank1_update_dbl(alpha, x, y, a, err)

Performs a rank-1 update of a matrix of the form $A = \alpha x y^T + A$ .

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=real64),	intent(in)			::	alpha	The scalar $\alpha$ to multiply the outer product of $x$ and $y$ .
real(kind=real64),	intent(in),		dimension(:)	::	x	The vector $x$ in the outer product.
real(kind=real64),	intent(in),		dimension(:)	::	y	The vector $y$ in the outer product.
real(kind=real64),	intent(inout),		dimension(:,:)	::	a	The matrix $A$ to update.
class(errors),	intent(inout),	optional,	target	::	err	An error object to report any errors that occur.

private subroutine rank1_update_cmplx(alpha, x, y, a, err)

Performs a rank-1 update of a matrix of the form $A = \alpha x y^H + A$ .

Arguments

Type	Intent	Optional	Attributes		Name
complex(kind=real64),	intent(in)			::	alpha	The scalar $\alpha$ to multiply the outer product of $x$ and $y$ .
complex(kind=real64),	intent(in),		dimension(:)	::	x	The vector $x$ in the outer product.
complex(kind=real64),	intent(in),		dimension(:)	::	y	The vector $y$ in the outer product.
complex(kind=real64),	intent(inout),		dimension(:,:)	::	a	The matrix $A$ to update.
class(errors),	intent(inout),	optional,	target	::	err	An error object to report any errors that occur.