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ILUTPPreconditionerPivotTolerance Property

Gets or sets the pivot tolerance which indicates at what level pivoting will take place. The standard value is 0.0 which means pivoting will never take place.

Namespace: Altaxo.Calc.LinearAlgebra.Complex.Solvers
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
Syntax
C#
Copy
public double PivotTolerance { get; set; }

Property Value

Double
Exceptions
ExceptionCondition
ArgumentOutOfRangeExceptionThrown if a negative value is provided.
Remarks

The pivot tolerance is used to calculate if pivoting is necessary. Pivoting will take place if any of the values in a row is bigger than the diagonal value of that row divided by the pivot tolerance, i.e. pivoting will take place if row(i,j) > row(i,i) / PivotTolerance for any j that is not equal to i.

Note that any changes to the PivotTolerance after creating the preconditioner will invalidate the created preconditioner and will require a re-initialization of the preconditioner.

See Also