private class MultistepIntegrator.NordsieckInitializer extends java.lang.Object implements StepHandler
Modifier and Type | Field and Description |
---|---|
private int |
count
Steps counter.
|
private double[] |
t
First steps times.
|
private double[][] |
y
First steps states.
|
private double[][] |
yDot
First steps derivatives.
|
Constructor and Description |
---|
NordsieckInitializer(int nSteps,
int n)
Simple constructor.
|
Modifier and Type | Method and Description |
---|---|
void |
handleStep(StepInterpolator interpolator,
boolean isLast)
Handle the last accepted step
|
void |
init(double t0,
double[] y0,
double time)
Initialize step handler at the start of an ODE integration.
|
private int count
private final double[] t
private final double[][] y
private final double[][] yDot
public NordsieckInitializer(int nSteps, int n)
nSteps
- number of steps of the multistep method (excluding the one being computed)n
- problem dimensionpublic void handleStep(StepInterpolator interpolator, boolean isLast) throws MaxCountExceededException
handleStep
in interface StepHandler
interpolator
- interpolator for the last accepted step. For
efficiency purposes, the various integrators reuse the same
object on each call, so if the instance wants to keep it across
all calls (for example to provide at the end of the integration a
continuous model valid throughout the integration range, as the
ContinuousOutputModel
class does), it should build a local copy
using the clone method of the interpolator and store this copy.
Keeping only a reference to the interpolator and reusing it will
result in unpredictable behavior (potentially crashing the application).isLast
- true if the step is the last oneMaxCountExceededException
- if the interpolator throws one because
the number of functions evaluations is exceededpublic void init(double t0, double[] y0, double time)
This method is called once at the start of the integration. It may be used by the step handler to initialize some internal data if needed.
init
in interface StepHandler
t0
- start value of the independent time variabley0
- array containing the start value of the state vectortime
- target time for the integration