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NMathFunctionsEstimateConditionNumber(DoubleComplexMatrix, NormType) Method

Estimates the reciprocal of the condition number of a given matrix in the specified norm type.

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4
Syntax
public static double EstimateConditionNumber(
	DoubleComplexMatrix A,
	NormType norm
)

Parameters

A  DoubleComplexMatrix
A matrix.
norm  NormType
The norm used to compute the condition number.

Return Value

Double
An estimate of the reciprocal of the condition number of the matrix A.
Exceptions
ExceptionCondition
MatrixNotSquareExceptionThrown if the factored matrix is not square.
Remarks
The condition number of A is:
C#
kappa = ||A|| ||AInv||
where AInv is the inverse of the matrix A. This function returns an estimate for rho = 1/kappa which is never less than rho and in practice is nearly always less than 10*rho.
See Also