invSqrtSym

invSqrtSym(A, options?): number[][]

Defined in: eigsym.js:244

Inverse square root of a symmetric positive semidefinite matrix: the symmetric W with W A W = I on A’s range, and W = 0 on its null space.

Parameters

A

number[][]

Symmetric positive semidefinite matrix

options?

rcond?

number

Relative eigenvalue cutoff below which a direction is treated as null; default n * eps

Returns

number[][]

Symmetric n x n inverse square root

Throws

When A is not symmetric or has a clearly negative eigenvalue