maspack.util
Class CubicSolver
java.lang.Object
maspack.util.CubicSolver
public class CubicSolver
- extends java.lang.Object
Finds the roots of a cubic equation on a specified interval. Adopted from
utility code provided by Robert Bridson's graphics group.
Also, a good guide to the structure of cubics and their solution is the
paper "A new approach to solving the cubic: Cardan's solution revealed", by
RWD Nickalls.
Field Summary |
static double |
PREC
|
static double |
RTOL
|
Method Summary |
static double |
cuberoot(double x)
|
static int |
getRoots(double[] roots,
double a,
double b,
double c,
double d)
|
static int |
getRoots(double[] roots,
double a,
double b,
double c,
double d,
double x0,
double x1)
|
static int |
getRootsAlgebraic(double[] roots,
double a,
double b,
double c,
double d)
|
static int |
getRootsAlgebraic(double[] roots,
double a,
double b,
double c,
double d,
double x0,
double x1)
|
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
RTOL
public static double RTOL
PREC
public static double PREC
CubicSolver
public CubicSolver()
getRoots
public static int getRoots(double[] roots,
double a,
double b,
double c,
double d)
getRoots
public static int getRoots(double[] roots,
double a,
double b,
double c,
double d,
double x0,
double x1)
cuberoot
public static double cuberoot(double x)
getRootsAlgebraic
public static int getRootsAlgebraic(double[] roots,
double a,
double b,
double c,
double d)
getRootsAlgebraic
public static int getRootsAlgebraic(double[] roots,
double a,
double b,
double c,
double d,
double x0,
double x1)