rvl.util
Class Solve

java.lang.Object
  |
  +--rvl.util.Solve

public class Solve

extends java.lang.Object

Routines for numerical solution of univariate equations

Constructor Summary

Solve()

Method Summary

static double	illinois(UniFunction f, double target, double x1, double x2) Solve f.of(x) == target in the interval (x1,x2) using the Illinois method.
protected static double	illinois(UniFunction f, double target, double x1, double x2, double f1, double f2)
static double	search(UniFunction f, double target, double start, double incr) Solve f.of(x) == target using starting value start.

Methods inherited from class java.lang.Object

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

Constructor Detail

Solve

public Solve()

Method Detail

illinois

public static double illinois(UniFunction f,
                              double target,
                              double x1,
                              double x2)

Solve f.of(x) == target in the interval (x1,x2) using the Illinois method.

Returns:

the solution

illinois

protected static double illinois(UniFunction f,
                                 double target,
                                 double x1,
                                 double x2,
                                 double f1,
                                 double f2)

search

public static double search(UniFunction f,
                            double target,
                            double start,
                            double incr)

Solve f.of(x) == target using starting value start. Searching is initialized based on function values at start and start + incr, both of which are assumed to lie in the domain of f. Once an enclosing interval is found, solution is completed using the Illinois method.

Returns:

the solution