ILMatheigSymm Method (InArrayDouble, OutArrayDouble)

public static RetArray<double> eigSymm(
	InArray<double> A,
	OutArray<double> V = null
)

Public Shared Function eigSymm ( 
	A As InArray(Of Double),
	Optional V As OutArray(Of Double) = Nothing
) As RetArray(Of Double)

Dim A As InArray(Of Double)
Dim V As OutArray(Of Double)
Dim returnValue As RetArray(Of Double)

returnValue = ILMath.eigSymm(A, V)

Parameters

A

Type: ILNumericsInArrayDouble
Input matrix, Size [n x n], symmetric (hermitian for complex A).

V (Optional)

Type: ILNumericsOutArrayDouble
Output: n eigenvectors in ascending order as columns. Size [n x n]. If V is null on input, the eigenvectors will not be computed.

Return Value

For computation the Lapack functions dsyevr, ssyevr, chesvr and zheesv are used.

Since A is symmetric, eigenvalues are real. The return value will be of the same real/complex type as A.

[ILNumerics Computing Engine]

Reference