org.apache.commons.math.ode.nonstiff
Class ThreeEighthesIntegrator
java.lang.Object
org.apache.commons.math.ode.AbstractIntegrator
org.apache.commons.math.ode.nonstiff.RungeKuttaIntegrator
org.apache.commons.math.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
- Version:
- $Revision: 810196 $ $Date: 2009-09-01 15:47:46 -0400 (Tue, 01 Sep 2009) $
- See Also:
EulerIntegrator
,
ClassicalRungeKuttaIntegrator
,
GillIntegrator
,
MidpointIntegrator
Field Summary |
private static double[][] |
STATIC_A
Internal weights Butcher array. |
private static double[] |
STATIC_B
Propagation weights Butcher array. |
private static double[] |
STATIC_C
Time steps Butcher array. |
Methods inherited from class org.apache.commons.math.ode.AbstractIntegrator |
addEndTimeChecker, addEventHandler, addStepHandler, clearEventHandlers, clearStepHandlers, computeDerivatives, getCurrentSignedStepsize, getCurrentStepStart, getEvaluations, getEventHandlers, getMaxEvaluations, getName, getStepHandlers, requiresDenseOutput, resetEvaluations, sanityChecks, setEquations, setMaxEvaluations |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
STATIC_C
private static final double[] STATIC_C
- Time steps Butcher array.
STATIC_A
private static final double[][] STATIC_A
- Internal weights Butcher array.
STATIC_B
private static final double[] STATIC_B
- Propagation weights Butcher array.
ThreeEighthesIntegrator
public ThreeEighthesIntegrator(double step)
- Simple constructor.
Build a 3/8 integrator with the given step.
- Parameters:
step
- integration step
Copyright (c) 2003-2010 Apache Software Foundation