Class ThreeEighthesIntegrator

java.lang.Object

org.apache.commons.math3.ode.AbstractIntegrator

org.apache.commons.math3.ode.nonstiff.RungeKuttaIntegrator

org.apache.commons.math3.ode.nonstiff.ThreeEighthesIntegrator

All Implemented Interfaces:

FirstOrderIntegrator, ODEIntegrator

public class ThreeEighthesIntegrator
extends RungeKuttaIntegrator

This class implements the 3/8 fourth order Runge-Kutta integrator for Ordinary Differential Equations.

This method is an explicit Runge-Kutta method, its Butcher-array is the following one :

   0  |  0    0    0    0
  1/3 | 1/3   0    0    0
  2/3 |-1/3   1    0    0
   1  |  1   -1    1    0
      |--------------------
      | 1/8  3/8  3/8  1/8

Since:

1.2

See Also:

• EulerIntegrator
• ClassicalRungeKuttaIntegrator
• GillIntegrator
• MidpointIntegrator
• LutherIntegrator

Field Summary

Fields inherited from class AbstractIntegrator

isLastStep, resetOccurred, stepHandlers, stepSize, stepStart

Constructor Summary

Constructors

Constructor	Description
ThreeEighthesIntegrator(double step)	Simple constructor.

Method Summary

Methods inherited from class RungeKuttaIntegrator

integrate, singleStep

Methods inherited from class AbstractIntegrator

acceptStep, addEventHandler, addEventHandler, addStepHandler, clearEventHandlers, clearStepHandlers, computeDerivatives, getCounter, getCurrentSignedStepsize, getCurrentStepStart, getEvaluations, getEvaluationsCounter, getEventHandlers, getExpandable, getMaxEvaluations, getName, getStepHandlers, initIntegration, integrate, sanityChecks, setEquations, setMaxEvaluations, setStateInitialized

Methods inherited from class Object

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

Constructor Details

ThreeEighthesIntegrator

public ThreeEighthesIntegrator(double step)

Simple constructor. Build a 3/8 integrator with the given step.

Parameters:

step - integration step