ILMatheigSymm Method (InArrayDouble, OutArrayDouble, Double, Double)

public static RetArray<double> eigSymm(
	InArray<double> A,
	OutArray<double> V,
	double rangeStart,
	double rangeEnd
)

Public Shared Function eigSymm ( 
	A As InArray(Of Double),
	V As OutArray(Of Double),
	rangeStart As Double,
	rangeEnd As Double
) As RetArray(Of Double)

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

returnValue = ILMath.eigSymm(A, V, rangeStart, 
	rangeEnd)

Parameters

A

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

V

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

rangeStart

Type: SystemDouble
Determines the lower limit of the index range of eigenvalues to be returned.

rangeEnd

Type: SystemDouble
Determines the upper limit of the index range of eigenvalues to be returned.

Return Value

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

[ILNumerics Computing Engine]

Reference