DGEBD2Run Method

public void Run(
	int M,
	int N,
	ref double[] A,
	int offset_a,
	int LDA,
	ref double[] D,
	int offset_d,
	ref double[] E,
	int offset_e,
	ref double[] TAUQ,
	int offset_tauq,
	ref double[] TAUP,
	int offset_taup,
	ref double[] WORK,
	int offset_work,
	ref int INFO
)

Public Sub Run ( 
	M As Integer,
	N As Integer,
	ByRef A As Double(),
	offset_a As Integer,
	LDA As Integer,
	ByRef D As Double(),
	offset_d As Integer,
	ByRef E As Double(),
	offset_e As Integer,
	ByRef TAUQ As Double(),
	offset_tauq As Integer,
	ByRef TAUP As Double(),
	offset_taup As Integer,
	ByRef WORK As Double(),
	offset_work As Integer,
	ByRef INFO As Integer
)

Parameters

M  Int32

(input) INTEGER The number of rows in the matrix A. M .GE. 0.

N  Int32

(input) INTEGER The number of columns in the matrix A. N .GE. 0.

A  Double

(input/output) DOUBLE PRECISION array, dimension (LDA,N) On entry, the m by n general matrix to be reduced. On exit, if m .GE. n, the diagonal and the first superdiagonal are overwritten with the upper bidiagonal matrix B; the elements below the diagonal, with the array TAUQ, represent the orthogonal matrix Q as a product of elementary reflectors, and the elements above the first superdiagonal, with the array TAUP, represent the orthogonal matrix P as a product of elementary reflectors; if m .LT. n, the diagonal and the first subdiagonal are overwritten with the lower bidiagonal matrix B; the elements below the first subdiagonal, with the array TAUQ, represent the orthogonal matrix Q as a product of elementary reflectors, and the elements above the diagonal, with the array TAUP, represent the orthogonal matrix P as a product of elementary reflectors. See Further Details.

offset_a  Int32

 

LDA  Int32

(input) INTEGER The leading dimension of the array A. LDA .GE. max(1,M).

D  Double

(output) DOUBLE PRECISION array, dimension (min(M,N)) The diagonal elements of the bidiagonal matrix B: D(i) = A(i,i).

offset_d  Int32

 

E  Double

(output) DOUBLE PRECISION array, dimension (min(M,N)-1) The off-diagonal elements of the bidiagonal matrix B: if m .GE. n, E(i) = A(i,i+1) for i = 1,2,...,n-1; if m .LT. n, E(i) = A(i+1,i) for i = 1,2,...,m-1.

offset_e  Int32

 

TAUQ  Double

(output) DOUBLE PRECISION array dimension (min(M,N)) The scalar factors of the elementary reflectors which represent the orthogonal matrix Q. See Further Details.

offset_tauq  Int32

 

TAUP  Double

(output) DOUBLE PRECISION array, dimension (min(M,N)) The scalar factors of the elementary reflectors which represent the orthogonal matrix P. See Further Details.

offset_taup  Int32

 

WORK  Double

(workspace) DOUBLE PRECISION array, dimension (max(M,N))

offset_work  Int32

 

INFO  Int32

(output) INTEGER = 0: successful exit. .LT. 0: if INFO = -i, the i-th argument had an illegal value.

Reference