DLACONRun Method

public void Run(
	int N,
	ref double[] V,
	int offset_v,
	ref double[] X,
	int offset_x,
	ref int[] ISGN,
	int offset_isgn,
	ref double EST,
	ref int KASE
)

Public Sub Run ( 
	N As Integer,
	ByRef V As Double(),
	offset_v As Integer,
	ByRef X As Double(),
	offset_x As Integer,
	ByRef ISGN As Integer(),
	offset_isgn As Integer,
	ByRef EST As Double,
	ByRef KASE As Integer
)

Parameters

N  Int32

(input) INTEGER The order of the matrix. N .GE. 1.

V  Double

(workspace) DOUBLE PRECISION array, dimension (N) On the final return, V = A*W, where EST = norm(V)/norm(W) (W is not returned).

offset_v  Int32

 

X  Double

(input/output) DOUBLE PRECISION array, dimension (N) On an intermediate return, X should be overwritten by A * X, if KASE=1, A' * X, if KASE=2, and DLACON must be re-called with all the other parameters unchanged.

offset_x  Int32

 

ISGN  Int32

(workspace) INTEGER array, dimension (N)

offset_isgn  Int32

 

EST  Double

(output) DOUBLE PRECISION An estimate (a lower bound) for norm(A).

KASE  Int32

(input/output) INTEGER On the initial call to DLACON, KASE should be 0. On an intermediate return, KASE will be 1 or 2, indicating whether X should be overwritten by A * X or A' * X. On the final return from DLACON, KASE will again be 0.

Reference