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Class berkeley.cs.dmc.numericalMethods.Integrator 

java.lang.Object
   |
   +----berkeley.cs.dmc.numericalMethods.Integrator
public final class Integrator
extends Object
The Integrator class defines methods for numerically integrating differential equations. The actual routine used is a 5th order Runge-Kutta method given in "Numerical Recipes", Cambridge University Press, 1992.

Constructor Index

o Integrator(Derivative)
An instance of the class that evaluates the function's derivatives is given to the constructor.

Method Index

o ODEIntegrate(double[], double, double, double, double, double)
The integration routine.

Constructors

o Integrator 
 public Integrator(Derivative derivs)
An instance of the class that evaluates the function's derivatives is given to the constructor. The derivatives routine is the complete description of the function.

Parameters:
derivs - An instance of the class to evaluate the function's derivatives. This class must implement the Derivative interface.
See Also:
Derivative

Methods

o ODEIntegrate 
 public synchronized void ODEIntegrate(double ystart[],
                                       double x1,
                                       double x2,
                                       double eps,
                                       double h1,
                                       double hmin) throws ArithmeticException
The integration routine. Integrates from x1 to x2, with error tolerance eps, initial step size h1 and minimum step size hmin.

Parameters:
ystart - The initial values for all the variables.
x1 - The initial ordinate value (generally time).
x2 - The final ordinate value (generally time).
eps - The error tolerance.
h1 - The initial step size.
hmin - The minimum step size. An exception wil be thrown if the step size drops below this value.
Throws: ArithmeticException
Thrown if the step size becomes too small or the number of steps is too large. 
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