Package gaiasky.util.gaia.utils

Class RungeKuttaNs

java.lang.Object

gaiasky.util.gaia.utils.RungeKuttaNs

public class RungeKuttaNs
extends Object

Constructor Summary

Constructors

Constructor	Description
RungeKuttaNs()

Method Summary

Modifier and Type	Method	Description
static double[]	fourthOrder(DiffnFunctionNs g, long tOld, double[] y0, long tNew, long tStepMax, long tUnit)	Returns the value of y at a given value of x (xn) for a set of ordinary differential equation (ODEs)

Methods inherited from class java.lang.Object

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

Constructor Details

RungeKuttaNs

public RungeKuttaNs()

Method Details

fourthOrder

public static double[] fourthOrder(DiffnFunctionNs g,
 long tOld,
 double[] y0,
 long tNew,
 long tStepMax,
 long tUnit)

Returns the value of y at a given value of x (xn) for a set of ordinary differential equation (ODEs)

See http://www.ee.ucl.ac.uk/~mflanaga/java/RungeKutta.html#four

Parameters:

g - an implementation of DiffnFunction describing a set of Ordinary Differential Equations

tOld - the initial value for t

y0 - the initial value for y

tNew - the value of t where we want to know y

tStepMax - the initial step size

tUnit - the time unit used for the derivatives

Returns:

the value of y at xn