COMQR2Run Method

public void Run(
	int NM,
	int N,
	int LOW,
	int IGH,
	ref double[] ORTR,
	int offset_ortr,
	ref double[] ORTI,
	int offset_orti,
	ref double[] HR,
	int offset_hr,
	ref double[] HI,
	int offset_hi,
	ref double[] WR,
	int offset_wr,
	ref double[] WI,
	int offset_wi,
	ref double[] ZR,
	int offset_zr,
	ref double[] ZI,
	int offset_zi,
	ref int IERR
)

Public Sub Run ( 
	NM As Integer,
	N As Integer,
	LOW As Integer,
	IGH As Integer,
	ByRef ORTR As Double(),
	offset_ortr As Integer,
	ByRef ORTI As Double(),
	offset_orti As Integer,
	ByRef HR As Double(),
	offset_hr As Integer,
	ByRef HI As Double(),
	offset_hi As Integer,
	ByRef WR As Double(),
	offset_wr As Integer,
	ByRef WI As Double(),
	offset_wi As Integer,
	ByRef ZR As Double(),
	offset_zr As Integer,
	ByRef ZI As Double(),
	offset_zi As Integer,
	ByRef IERR As Integer
)

Parameters

NM  Int32

must be set to the row dimension of two-dimensional array parameters as declared in the calling program dimension statement.

N  Int32

is the order of the matrix.

LOW  Int32

and igh are integers determined by the balancing subroutine cbal. if cbal has not been used, set low=1, igh=n.

IGH  Int32

 

ORTR  Double

and orti contain information about the unitary trans- formations used in the reduction by corth, if performed. only elements low through igh are used. if the eigenvectors of the hessenberg matrix are desired, set ortr(j) and orti(j) to 0.0d0 for these elements.

offset_ortr  Int32

 

ORTI  Double

 

offset_orti  Int32

 

HR  Double

and hi contain the real and imaginary parts, respectively, of the complex upper hessenberg matrix. their lower triangles below the subdiagonal contain further information about the transformations which were used in the reduction by corth, if performed. if the eigenvectors of the hessenberg matrix are desired, these elements may be arbitrary.

offset_hr  Int32

 

HI  Double

 

offset_hi  Int32

 

WR  Double

and wi contain the real and imaginary parts, respectively, of the eigenvalues. if an error exit is made, the eigenvalues should be correct for indices ierr+1,...,n.

offset_wr  Int32

 

WI  Double

 

offset_wi  Int32

 

ZR  Double

and zi contain the real and imaginary parts, respectively, of the eigenvectors. the eigenvectors are unnormalized. if an error exit is made, none of the eigenvectors has been found.

offset_zr  Int32

 

ZI  Double

 

offset_zi  Int32

 

IERR  Int32

is set to zero for normal return, j if the limit of 30*n iterations is exhausted while the j-th eigenvalue is being sought.

Reference