org.jscience.mathematics.analysis.polynomials
Class DoublePolynomialFraction

java.lang.Object
  org.jscience.mathematics.analysis.DoubleFunction
      org.jscience.mathematics.analysis.polynomials.DoublePolynomialFraction

All Implemented Interfaces:

java.io.Serializable, Field.Member, Ring.Member, AbelianGroup.Member, AbstractMapping, C1Function, PrimitiveMapping, Member

public class DoublePolynomialFraction
extends DoubleFunction

This class implements fractions of polynomials with one unknown and real coefficients.

See Also:

Serialized Form

Constructor Summary

DoublePolynomialFraction(DoublePolynomial p)
Simple constructor.

DoublePolynomialFraction(DoublePolynomial numerator, DoublePolynomial denominator)
Simple constructor.

DoublePolynomialFraction(DoublePolynomialFraction f)
Copy-constructor.

Method Summary

DoublePolynomialFraction	add(DoublePolynomialFraction f) Add a fraction to the instance.
DoublePolynomialFraction	differentiate() Returns the differential of this function.
DoublePolynomialFraction	divide(DoublePolynomialFraction f) Divide the instance by a fraction.
DoublePolynomial	getDenominator() Get the denominator.
DoublePolynomial	getNumerator() Get the numerator.
DoublePolynomialFraction	invert() Invert the instance.
double	map(double x) Evaluates this polynomial fraction.
double	map(float x) Evaluates this polynomial.
double	map(int x) Evaluates this polynomial.
double	map(long x) Evaluates this polynomial.
DoublePolynomialFraction	multiply(DoublePolynomialFraction f) Multiply the instance by a fraction.
DoublePolynomialFraction	negate() Negate a fraction.
DoublePolynomialFraction	subtract(DoublePolynomialFraction f) Subtract a fraction to the instance.
java.lang.String	toString() DOCUMENT ME!
java.lang.String	toString(java.lang.String unknown) DOCUMENT ME!

Methods inherited from class org.jscience.mathematics.analysis.DoubleFunction

add, add, compose, cos, divide, divide, exp, getIntervalsList, inverse, log, multiply, multiply, power, setIntervalsList, sin, sqrt, subtract, subtract, taylorExpand, tensor

Methods inherited from class java.lang.Object

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

Constructor Detail

DoublePolynomialFraction

public DoublePolynomialFraction(DoublePolynomial numerator,
                                DoublePolynomial denominator)

Simple constructor. Build a fraction from a numerator and a denominator.

Parameters:

numerator - numerator of the fraction

denominator - denominator of the fraction

Throws:

java.lang.ArithmeticException - if the denominator is null

DoublePolynomialFraction

public DoublePolynomialFraction(DoublePolynomial p)

Simple constructor. Build a fraction from a single Polynom

Parameters:

p - value of the fraction

DoublePolynomialFraction

public DoublePolynomialFraction(DoublePolynomialFraction f)

Copy-constructor.

Parameters:

f - fraction to copy

Method Detail

map

public double map(double x)

Evaluates this polynomial fraction.

Specified by:

map in interface PrimitiveMapping

Specified by:

map in class DoubleFunction

Parameters:

x - DOCUMENT ME!

Returns:

DOCUMENT ME!

See Also:

org.jscience.mathematics.analysis.IntervalList.

map

public double map(float x)

Evaluates this polynomial.

Specified by:

map in interface PrimitiveMapping

Overrides:

map in class DoubleFunction

Parameters:

x - DOCUMENT ME!

Returns:

DOCUMENT ME!

map

public double map(long x)

Evaluates this polynomial.

Specified by:

map in interface PrimitiveMapping

Overrides:

map in class DoubleFunction

Parameters:

x - DOCUMENT ME!

Returns:

DOCUMENT ME!

map

public double map(int x)

Evaluates this polynomial.

Specified by:

map in interface PrimitiveMapping

Overrides:

map in class DoubleFunction

Parameters:

x - DOCUMENT ME!

Returns:

DOCUMENT ME!

differentiate

public DoublePolynomialFraction differentiate()

Returns the differential of this function.

Specified by:

differentiate in interface C1Function

Specified by:

differentiate in class DoubleFunction

Returns:

DOCUMENT ME!

negate

public DoublePolynomialFraction negate()

Negate a fraction.

Specified by:

negate in interface AbelianGroup.Member

Overrides:

negate in class DoubleFunction

Returns:

a new fraction which is the opposite of this

add

public DoublePolynomialFraction add(DoublePolynomialFraction f)

Add a fraction to the instance.

Parameters:

f - fraction to add.

Returns:

DOCUMENT ME!

subtract

public DoublePolynomialFraction subtract(DoublePolynomialFraction f)

Subtract a fraction to the instance.

Parameters:

f - fraction to subtract.

Returns:

DOCUMENT ME!

multiply

public DoublePolynomialFraction multiply(DoublePolynomialFraction f)

Multiply the instance by a fraction.

Parameters:

f - fraction to multiply by

Returns:

DOCUMENT ME!

divide

public DoublePolynomialFraction divide(DoublePolynomialFraction f)

Divide the instance by a fraction.

Parameters:

f - fraction to divide by

Returns:

DOCUMENT ME!

Throws:

java.lang.ArithmeticException - if f is null

invert

public DoublePolynomialFraction invert()

Invert the instance. Replace the instance by its inverse.

Returns:

DOCUMENT ME!

Throws:

java.lang.ArithmeticException - if the instance is null

getNumerator

public DoublePolynomial getNumerator()

Get the numerator.

Returns:

the numerator

getDenominator

public DoublePolynomial getDenominator()

Get the denominator.

Returns:

the denominator (leeding coefficient is always positive)

toString

public java.lang.String toString()

DOCUMENT ME!

Overrides:

toString in class java.lang.Object

Returns:

DOCUMENT ME!

toString

public java.lang.String toString(java.lang.String unknown)

DOCUMENT ME!

Parameters:

unknown - DOCUMENT ME!

Returns:

DOCUMENT ME!