ILNumerics Ultimate VSILMatheigSymm Method (InArraycomplex)ILNumerics Ultimate VS Documentation
ILNumerics - Technical Application Development
Find all eigenvalues of symmetric / hermitian matrix.

[ILNumerics Computing Engine]

Namespace: ILNumerics
Assembly: ILNumerics.Computing (in ILNumerics.Computing.dll) Version: 5.3.0.0 (5.3.7131.2749)
Syntax

public static RetArray<double> eigSymm(
	InArray<complex> A
)

Parameters

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

Return Value

Type: RetArrayDouble
Array of size [n,1] with eigenvalues of A in ascending order.
Exceptions

ExceptionCondition
ArgumentExceptionif A is not square.
Remarks

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

Since A is symmetric the eigenvalues and the array returned have the same real/complex element type as A.

[ILNumerics Computing Engine]

See Also

Reference

MathInternal.eig(InArraycomplex, OutArraycomplex, MatrixProperties, Boolean)