ILNumerics Ultimate VS

ILMathqr Method (InArrayfcomplex)

ILNumerics Ultimate VS Documentation
ILNumerics - Technical Application Development
QR decomposition - raw output as returned from LAPACK.

[ILNumerics Computing Engine]

Namespace:  ILNumerics
Assembly:  ILNumerics.Computing (in ILNumerics.Computing.dll) Version: 5.5.0.0 (5.5.7503.3146)
Syntax

public static RetArray<fcomplex> qr(
	InArray<fcomplex> A
)

Parameters

A
Type: ILNumericsInArrayfcomplex
Input matrix.

Return Value

Type: RetArrayfcomplex
Orthonormal / unitary matrix Q and upper triangular matrix R packed into a single matrix. This is the output of the lapack function ?geqrf.
Remarks

Input matrix A is not altered.

The matrix returned is the direct output of the lapack function [d,s,c,z]geqrf, respectively. It contains the decomposition factors Q and R, but they are combined into a single matrix. Overloads exist which return Q and R individually: qr(InArrayfcomplex, OutArrayfcomplex, Boolean).

[ILNumerics Computing Engine]

See Also

Reference