OuterProduct

Advanced Analysis Library Only

AnalysisLibErrType OuterProduct (double vectorX[], int numberElementsX, double vectorY[], int numberElementsY, void *outerProduct);

Purpose

Calculates the outer product of the real input vectors x and y.

Let xi represent the elements of the numberElementsX-element vector x for i = 0, 1, 2, . . ., numberElementsX — 1.

Let yj represent the elements of the numberElementsY-element vector y for j = 0, 1, 2, . . ., numberElementsY — 1.

The outer product of these two vectors is a matrix O of dimensions n-by-m, where the (i, j)th element of O is given by

oi, j = xi × yj

Parameters

Input
Name Type Description
vectorX double-precision array The first vector used in the calculation of the outer product.
numberElementsX integer Number of elements in vectorX.
vectorY double-precision >array The second vector used in the calculation of the outer product.
numberElementsY integer Number of elements in vectorY.
Output
Name Type Description
outerProduct numeric array Calculated outer product matrix, as an array of doubles.

If vectorX is of dimensions m and vectorY is of dimensions n, the size of the matrix containing the outer product is m-by-n.

Return Value

Name Type Description
status AnalysisLibErrType A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants.