datan

Class AuxDer

java.lang.Object

datan.AuxDer

public class AuxDer
extends java.lang.Object

A class computing the derivative f'(x) of f(x) at x = X. Based on H. Rutishauser, Ausdehnung des Rombergschen Prinzips Extension of Romberg's Principle), Numer. Math. 5 (1963) 48-54.

Author:

Siegmund Brandt.

Constructor Summary

Constructors

Constructor and Description
AuxDer(DatanUserFunction df)

Method Summary

Methods

Modifier and Type	Method and Description
double	getDerivative(double x)
boolean	hasConverged()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AuxDer

public AuxDer(DatanUserFunction df)

Parameters:

df - user function which must be an extension of the abstract class DatanUserFunction.

Method Detail

getDerivative

public double getDerivative(double x)

Parameters:

x - argument of the user function at which the derivative is computed.

Returns:

derivative.

hasConverged

public boolean hasConverged()

Returns:

true if iteration successful, false otherwise. (To be called only after "getDerivative(x)".)