physics3d
Class ZeroFinder

java.lang.Object
  physics3d.ZeroFinder

public class ZeroFinder
extends Object

Nested Class Summary

static interface

ZeroFinder.Function ZeroFinder.Function is an interface which specifies a function whose roots can be found by this class.

Constructor Summary

ZeroFinder()

Method Summary

static double

findRoot(ZeroFinder.Function function, double t_min, double t_max, int subintervals)

Methods inherited from class java.lang.Object

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

Constructor Detail

ZeroFinder

public ZeroFinder()

Method Detail

findRoot

public static double findRoot(ZeroFinder.Function function,
                              double t_min,
                              double t_max,
                              int subintervals)

Requires:

t_min <= t_max, stepSize > 0 Searches for possible roots of function by looking for sign changes. If a possible root is found, regula falsi is performed to try to determine the precise value of the root. This function searches for roots between t_min and t_max. Will return the smallest zero within the first interval of length stepSize where function changes sign. If no solution is found returns NaN, else returns the solution. To improve speed, use smaller intervals or increase the step size. However, increasing the step size also increases the chance that the root you get is not the smallest. Also increasing the step size could decreases the probability that a root will be found, as less points are tested.