Package etomica.math

Class Rational

java.lang.Object

etomica.math.Rational

public class Rational
extends java.lang.Object

Class handling rational numbers (numerator / denominator), including addition, multiplication and reducing (15/6 => 5/2).

Field Summary

Fields

Modifier and Type	Field	Description
protected int	denominator
protected int	numerator
static Rational	ZERO

Constructor Summary

Constructors

Constructor	Description
Rational()
Rational(int numerator, int denominator)	Creates Rational instance with the given numerator and denominator.

Method Summary

Modifier and Type	Method	Description
int	denominator()	Returns the denominator.
int	numerator()	Returns the numerator.
Rational	plus(Rational r)	Returns a new Rational instance, which is the result of adding the given Rational to this Rational.
protected void	simplify()	Simplify the rational.
Rational	times(Rational r)	Returns a new Rational instance, which is the result of multiplying this Rational by the given Rational.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

numerator

protected int numerator

denominator

protected int denominator

ZERO

public static final Rational ZERO

Constructor Detail

Rational

public Rational()

Rational

public Rational(int numerator,
                int denominator)

Creates Rational instance with the given numerator and denominator. If appropriate, the rational is simplified (factoring).

Method Detail

numerator

public int numerator()

Returns the numerator.

denominator

public int denominator()

Returns the denominator.

times

public Rational times(Rational r)

Returns a new Rational instance, which is the result of multiplying this Rational by the given Rational.

plus

public Rational plus(Rational r)

Returns a new Rational instance, which is the result of adding the given Rational to this Rational.

simplify

protected void simplify()

Simplify the rational. If the denominator is negative, the signs of the numerator and denominator are both flipped. Numerator and denominator are also divided by any common factors.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object