DSYR2Run Method

public void Run(
	string UPLO,
	int N,
	double ALPHA,
	double[] X,
	int offset_x,
	int INCX,
	double[] Y,
	int offset_y,
	int INCY,
	ref double[] A,
	int offset_a,
	int LDA
)

Public Sub Run ( 
	UPLO As String,
	N As Integer,
	ALPHA As Double,
	X As Double(),
	offset_x As Integer,
	INCX As Integer,
	Y As Double(),
	offset_y As Integer,
	INCY As Integer,
	ByRef A As Double(),
	offset_a As Integer,
	LDA As Integer
)

Parameters

UPLO  String

- CHARACTER*1. On entry, UPLO specifies whether the upper or lower triangular part of the array A is to be referenced as follows: UPLO = 'U' or 'u' Only the upper triangular part of A is to be referenced. UPLO = 'L' or 'l' Only the lower triangular part of A is to be referenced. Unchanged on exit.

N  Int32

- INTEGER. On entry, N specifies the order of the matrix A. N must be at least zero. Unchanged on exit.

ALPHA  Double

- DOUBLE PRECISION. On entry, ALPHA specifies the scalar alpha. Unchanged on exit.

X  Double

- DOUBLE PRECISION array of dimension at least ( 1 + ( n - 1 )*abs( INCX ) ). Before entry, the incremented array X must contain the n element vector x. Unchanged on exit.

offset_x  Int32

 

INCX  Int32

- INTEGER. On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit.

Y  Double

- DOUBLE PRECISION array of dimension at least ( 1 + ( n - 1 )*abs( INCY ) ). Before entry, the incremented array Y must contain the n element vector y. Unchanged on exit.

offset_y  Int32

 

INCY  Int32

- INTEGER. On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. Unchanged on exit.

A  Double

:= alpha*x*y' + alpha*y*x' + A,

offset_a  Int32

 

LDA  Int32

- INTEGER. On entry, LDA specifies the first dimension of A as declared in the calling (sub) program. LDA must be at least max( 1, n ). Unchanged on exit.

Reference