lsqpblas_module Module

this file contains BLAS routines required by subroutines LSQR and acheck.

History

Jacob Williams : 11/8/2019 : using modernized versions of these routines.

Uses

- lsqr_kinds
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Used by

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Nodes of different colours represent the following:

Solid arrows point from a submodule to the (sub)module which it is descended from. Dashed arrows point from a module or program unit to modules which it uses.

Functions

public function ddot(n, dx, incx, dy, incy)

dot product of two vectors

Arguments

Type	Intent	Optional	Attributes		Name
integer				::	n
real(kind=wp)				::	dx(*)
integer				::	incx
real(kind=wp)				::	dy(*)
integer				::	incy

Return Value real(kind=wp)

public function dnrm2(n, x, incx)

euclidean norm of a vector.

Arguments

Type	Intent	Optional	Attributes		Name
integer				::	n
real(kind=wp)				::	x(*)
integer				::	incx

Return Value real(kind=wp)

Subroutines

public subroutine dcopy(n, dx, incx, dy, incy)

copies a vector, x, to a vector, y.

Arguments

Type	Intent	Optional	Attributes		Name
integer				::	n
real(kind=wp)				::	dx(*)
integer				::	incx
real(kind=wp)				::	dy(*)
integer				::	incy

public subroutine dscal(n, da, dx, incx)

scales a vector by a constant.

Arguments

Type	Intent	Optional	Attributes		Name
integer				::	n
real(kind=wp)				::	da
real(kind=wp)				::	dx(*)
integer				::	incx