Package org.apache.commons.math4.legacy.ode.nonstiff

Class GillIntegrator

java.lang.Object

org.apache.commons.math4.legacy.ode.AbstractIntegrator

org.apache.commons.math4.legacy.ode.nonstiff.RungeKuttaIntegrator

org.apache.commons.math4.legacy.ode.nonstiff.GillIntegrator

All Implemented Interfaces:

FirstOrderIntegrator, ODEIntegrator

public class GillIntegrator
extends RungeKuttaIntegrator

This class implements the Gill 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
   1/2 |   1/2       0       0      0
   1/2 | (q-1)/2  (2-q)/2    0      0
    1  |    0       -q/2  (2+q)/2   0
       |-------------------------------
       |   1/6    (2-q)/6 (2+q)/6  1/6
 

where q = sqrt(2)

Since:

1.2

See Also:

EulerIntegrator, ClassicalRungeKuttaIntegrator, MidpointIntegrator, ThreeEighthesIntegrator, LutherIntegrator

Field Summary

Fields inherited from class org.apache.commons.math4.legacy.ode.AbstractIntegrator

isLastStep, resetOccurred, stepHandlers, stepSize, stepStart

Constructor Summary

Constructors

Constructor	Description
GillIntegrator(double step)	Simple constructor.

Method Summary

Methods inherited from class org.apache.commons.math4.legacy.ode.nonstiff.RungeKuttaIntegrator

integrate, singleStep

Methods inherited from class org.apache.commons.math4.legacy.ode.AbstractIntegrator

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

Methods inherited from class java.lang.Object

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

Constructor Detail

GillIntegrator

public GillIntegrator(double step)

Simple constructor. Build a fourth-order Gill integrator with the given step.

Parameters:

step - integration step