org.jcurl.math
Class Polynome

java.lang.Object
  org.jcurl.math.R1RNFunctionImpl
      org.jcurl.math.R1R1Function
          org.jcurl.math.Polynome

All Implemented Interfaces:

Serializable, R1RNFunction

public class Polynome
extends R1R1Function

Polynomes of n-th grade.

Version:

$Id: Polynome.java 1031 2009-07-23 15:06:05Z mro $

Author:

M. Rohrmoser

See Also:

Serialized Form

Field Summary

(package private) double[]

params

Constructor Summary

Polynome(double[] params)

Method Summary

double	at(double x, int c) Compute the c'th derivative at x.
(package private) static long	fak(int a) Compute a!
(package private) static long	fak(int high, int low) Compute high!
static Polynome	getPoly(double t0, double x0, double v0, double a0) Convenience method to get the "bewegungsgleichung" for a given initial state.
static double[]	getPolyParams(double t0, double x0, double v0, double a0) Convenience method to get the "bewegungsgleichung" for a given initial state.
static double	poly(double x, double[] p) Compute the polynome p at x.
static double	poly(double x, int c, double[] p) Compute the c-th derivative of the polynome p at x.
String	toString()
static String	toString(double[] poly)

Methods inherited from class org.jcurl.math.R1R1Function

at, at

Methods inherited from class org.jcurl.math.R1RNFunctionImpl

at, at, dim

Methods inherited from class java.lang.Object

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

Field Detail

params

final double[] params

Constructor Detail

Polynome

public Polynome(double[] params)

Method Detail

fak

static long fak(int a)

Compute a!

Parameters:

a -

Returns:

a!

fak

static long fak(int high,
                int low)

Compute high! / low!

Parameters:

high -

low -

Returns:

high! / low!

getPoly

public static final Polynome getPoly(double t0,
                                     double x0,
                                     double v0,
                                     double a0)

Convenience method to get the "bewegungsgleichung" for a given initial state.

Parameters:

t0 - initial time

x0 - initial location

v0 - initial speed

a0 - constant acceleration

Returns:

the resulting polynome

See Also:

getPolyParams(double, double, double, double)

getPolyParams

public static final double[] getPolyParams(double t0,
                                           double x0,
                                           double v0,
                                           double a0)

Convenience method to get the "bewegungsgleichung" for a given initial state.

Parameters:

t0 - initial time

x0 - initial location

v0 - initial speed

a0 - constant acceleration

Returns:

the resulting polynome's parameters

poly

public static double poly(double x,
                          double[] p)

Compute the polynome p at x.

Parameters:

x -

p - polynome coefficients

Returns:

p(x)

See Also:

poly(double, int, double[])

poly

public static double poly(double x,
                          int c,
                          double[] p)

Compute the c-th derivative of the polynome p at x.

Parameters:

x -

c - derivative

p - polynome coefficients

Returns:

d/dx^c p(x)

toString

public static String toString(double[] poly)

at

public double at(double x,
                 int c)

Description copied from class: R1R1Function

Compute the c'th derivative at x.

Specified by:

at in class R1R1Function

Parameters:

x -

c -

Returns:

the value

See Also:

poly(double, int, double[])

toString

public String toString()

Overrides:

toString in class Object