GillIntegrator (Commons Math 2.2 API)

java.lang.Object
- org.apache.commons.math.ode.AbstractIntegrator
- - org.apache.commons.math.ode.nonstiff.RungeKuttaIntegrator
  - - org.apache.commons.math.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

Version:

$Revision: 990655 $ $Date: 2010-08-29 23:49:40 +0200 (dim. 29 août 2010) $

See Also:

EulerIntegrator, ClassicalRungeKuttaIntegrator, MidpointIntegrator, ThreeEighthesIntegrator

- Field Summary
  - Fields inherited from class org.apache.commons.math.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.math.ode.nonstiff.RungeKuttaIntegrator
    integrate
  - Methods inherited from class org.apache.commons.math.ode.AbstractIntegrator
    acceptStep, addEndTimeChecker, addEventHandler, addStepHandler, clearEventHandlers, clearStepHandlers, computeDerivatives, getCurrentSignedStepsize, getCurrentStepStart, getEvaluations, getEventHandlers, getMaxEvaluations, getName, getStepHandlers, requiresDenseOutput, resetEvaluations, 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