maspack.util

Class QuarticSolver

java.lang.Object

maspack.util.QuarticSolver

public class QuarticSolver
extends java.lang.Object

Finds the real roots of a quartic equation on a specified interval. Also, a good guide to the structure of quartics and their solution is the paper "The quartic equation: invariants and Euler's solution revealed", by RWD Nickalls.

Field Summary

Fields

Modifier and Type	Field and Description
static double	PREC
static double	RTOL

Constructor Summary

Constructors

Constructor and Description
QuarticSolver()

Method Summary

Modifier and Type	Method and Description
static int	getRoots(double[] roots, double a, double b, double c, double d, double e)
static int	getRoots(double[] roots, double a, double b, double c, double d, double e, double x0, double x1)

Methods inherited from class java.lang.Object

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

Field Detail

RTOL

public static double RTOL

PREC

public static double PREC

Constructor Detail

QuarticSolver

public QuarticSolver()

Method Detail

getRoots

public static int getRoots(double[] roots,
                           double a,
                           double b,
                           double c,
                           double d,
                           double e)

getRoots

public static int getRoots(double[] roots,
                           double a,
                           double b,
                           double c,
                           double d,
                           double e,
                           double x0,
                           double x1)