Package gov.nih.mipav.model.algorithms

Class Poly

java.lang.Object

gov.nih.mipav.model.algorithms.Poly

public class Poly
extends java.lang.Object

Solution of cubic, quartic, and quintic equations Ported from code written by (c) Khashin S.I. http://math.ivanovo.ac.ru/dalgebra/Khashin/index.html // khash2 (at) gmail.com // Thanks to Alexandr Rakhmanin // public domain

Author:

ilb

Field Summary

Fields

Modifier and Type	Field	Description
private double	eps
private double	TwoPi

Constructor Summary

Constructors

Constructor	Description
Poly()

Method Summary

Modifier and Type	Method	Description
private double	_root3(double x)
private void	CSqrt(double x, double y, double[] a, double[] b)
private void	dblSort3(double[] a, double[] b, double[] c)
double	F5(double t, double a, double b, double c, double d, double e)
private double	N4Step(double x, double a, double b, double c, double d)
private double	root3(double x)
void	selfTest()
int	SolveP2(double[] x, double a, double b)
int	SolveP3(double[] x, double a, double b, double c)
int	SolveP4(double[] x, double a, double b, double c, double d)
private int	SolveP4Bi(double[] x, double b, double d)
private int	SolveP4De(double[] x, double b, double c, double d)
int	SolveP5(double[] x, double a, double b, double c, double d, double e)
private double	SolveP5_1(double a, double b, double c, double d, double e)
private void	SWAP(double[] a, double[] b)

Methods inherited from class java.lang.Object

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

Field Detail

TwoPi

private final double TwoPi

See Also:

Constant Field Values

eps

private final double eps

See Also:

Constant Field Values

Constructor Detail

Poly

public Poly()

Method Detail

selfTest

public void selfTest()

_root3

private double _root3(double x)

root3

private double root3(double x)

SolveP2

public int SolveP2(double[] x,
                   double a,
                   double b)

SolveP3

public int SolveP3(double[] x,
                   double a,
                   double b,
                   double c)

CSqrt

private void CSqrt(double x,
                   double y,
                   double[] a,
                   double[] b)

SolveP4Bi

private int SolveP4Bi(double[] x,
                      double b,
                      double d)

SWAP

private void SWAP(double[] a,
                  double[] b)

dblSort3

private void dblSort3(double[] a,
                      double[] b,
                      double[] c)

SolveP4De

private int SolveP4De(double[] x,
                      double b,
                      double c,
                      double d)

N4Step

private double N4Step(double x,
                      double a,
                      double b,
                      double c,
                      double d)

SolveP4

public int SolveP4(double[] x,
                   double a,
                   double b,
                   double c,
                   double d)

F5

public double F5(double t,
                 double a,
                 double b,
                 double c,
                 double d,
                 double e)

SolveP5_1

private double SolveP5_1(double a,
                         double b,
                         double c,
                         double d,
                         double e)

SolveP5

public int SolveP5(double[] x,
                   double a,
                   double b,
                   double c,
                   double d,
                   double e)