Matrix Update (Symmetric » Rank-2) (G Dataflow)

N-element vector.

Input vector.

y must be the same size as x.

Symmetric matrix.

A must have dimensions greater than or equal to N × N, where N is the number of elements in x. If A is an empty matrix, this node initializes A to be an N × N matrix with all elements set to 0.

Triangular component of A that this node uses for the calculation.

Default: Upper Triangular

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error
If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

Scalar that scales x * y^T and y * x^T, where x^T and y^T represent x transposed and y transposed, respectively.

Default: 1

Matrix of the same dimensions as A.

For elements in the first N rows and N columns of the triangular component you select in matrix A type, dsyr2 returns the result of alpha * x * y^T + alpha * y * x^T + A, where x^T and y^T represent x and y transposed, respectively. For any remaining elements, dsyr2 returns the value of the element in A with the same index.

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error
If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.