vslSSEditCovCor

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 4/28/2026

Version

Public

vslSSEditCovCor

Modifies the pointers to covariance/correlation /cross-product parameters.

Syntax

status = vslsSSEditCovCor ( task , mean , cov , cov_storage , cor , cor_storage );

status = vsldSSEditCovCor ( task , mean , cov , cov_storage , cor , cor_storage );

Include Files

mkl.h

Input Parameters

Name	Type	Description
`task`	VSLSSTaskPtr	Descriptor of the task
`mean`	float* for `vslsSSEditCovCor` double* for `vsldSSEditCovCor`	Pointer to the array of means
`cov`	float* for `vslsSSEditCovCor` double* for `vsldSSEditCovCor`	Pointer to a covariance matrix
`cov_storage`	const MKL_INT*	Pointer to the storage format of the covariance matrix
`cor`	float* for `vslsSSEditCovCor` double* for `vsldSSEditCovCor`	Pointer to a correlation matrix
`cor_storage`	const MKL_INT*	Pointer to the storage format of the correlation matrix

Output Parameters

Name	Type	Description
`status`	int	Current status of the task

Description

The vslSSEditCovCor routine replaces pointers to the array of means, covariance/correlation arrays, and their storage format with values passed as corresponding parameters of the routine. If you pass a value of NULL for a specific input parameter, the value of that parameter in the task descriptor is unchanged.

The storage parameters, cov_storage and cor_storage , describe the storage format used for the p -by- p symmetric variance-covariance/correlation /cross-product matrix C . The matrix C can be described as

\[C = \begin{bmatrix} c_{11} & \cdots & c_{1j} & \cdots & c_{1p} \\ \vdots & \ddots & \vdots & & \vdots \\ c_{i1} & \cdots & c_{ij} & \cdots & c_{ip} \\ \vdots & & \vdots & \ddots & \vdots \\ c_{p1} & \cdots & c_{pj} & \cdots & c_{pp} \end{bmatrix}\]

Table “Storage formats of a variance-covariance/correlation shows how the matrix is stored in a one-dimensional array cp for different values of the storage parameters.

**Storage formats of variance-covariance/correlation/cross-product matrices**
Parameter	Description
VSL_SS_MATRIX_STORAGE_FULL	The array `cp` contains all elements of the matrix stored sequentially, row-by-row: `cp[0]` contains `\(c_{11}\)` `cp[1]` contains `\(c_{12}\)` `cp[p - 1]` contains `\(c_{1p}\)` `cp[p]` contains `\(c_{21}\)` `cp[pp - 1]` contains `\(c_{pp}\)` The size of array `cp` is `p p` .
VSL_SS_MATRIX_STORAGE_L_PACKED	The array `cp` contains the lower triangular part of the symmetric matrix stored sequentially, row-by-row: `cp[0]` contains `\(c_{11}\)` `cp[1]` contains `\(c_{21}\)` `cp[2]` contains `\(c_{22}\)` and so on. The size of the array is `p * (p + 1)/2`.
VSL_SS_MATRIX_STORAGE_U_PACKED	The array `cp` contains the upper triangular part of the symmetric matrix stored sequentially, row-by-row: `cp[0]` contains `\(c_{11}\)` `cp[1]` contains `\(c_{12}\)` `cp[2]` contains `\(c_{13}\)` and so on. The size of the array is `p * (p + 1)/2`.

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Developer Reference for Intel® oneAPI Math Kernel Library for C

vslSSEditCovCor

Syntax

Include Files

Input Parameters

Output Parameters

Description