Package com.twelvemonkeys.imageio.metadata.tiff

Class Rational

java.lang.Object

java.lang.Number

com.twelvemonkeys.imageio.metadata.tiff.Rational

All Implemented Interfaces:

Serializable, Comparable<Rational>

public final class Rational
extends Number
implements Comparable<Rational>

Represents a rational number with a long numerator and long denominator. Rational numbers are stored in reduced form with the sign stored with the numerator. Rationals are immutable.

Adapted from sample code featured in "Intro to Programming in Java: An Interdisciplinary Approach" (Addison Wesley) by Robert Sedgewick and Kevin Wayne. Permission granted to redistribute under BSD license.

Version:

$Id: Rational.java,v 1.0 Nov 18, 2009 1:12:00 AM haraldk Exp$

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private final long	denominator
(package private) static final Rational	NaN
private final long	numerator
(package private) static final Rational	ZERO

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Rational()
	Rational(long pNumber)
	Rational(long pNumerator, long pDenominator)

Method Summary

Modifier and Type	Method	Description
int	compareTo(Rational pOther)
long	denominator()
Rational	divides(Rational pOther)
double	doubleValue()
boolean	equals(Object pOther)
float	floatValue()
private static long	gcd(long m, long n)
int	hashCode()
int	intValue()
private static long	lcm(long m, long n)
long	longValue()
Rational	minus(Rational pOther)
Rational	negate()
long	numerator()
Rational	plus(Rational pOther)
Rational	reciprocal()
Rational	times(Rational pOther)
String	toString()

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

ZERO

static final Rational ZERO

NaN

static final Rational NaN

numerator

private final long numerator

denominator

private final long denominator

Constructor Details

Rational

private Rational()

Rational

public Rational(long pNumber)

Rational

public Rational(long pNumerator,
 long pDenominator)

Method Details

gcd

private static long gcd(long m,
 long n)

lcm

private static long lcm(long m,
 long n)

numerator

public long numerator()

denominator

public long denominator()

intValue

public int intValue()

Specified by:

intValue in class Number

longValue

public long longValue()

Specified by:

longValue in class Number

floatValue

public float floatValue()

Specified by:

floatValue in class Number

doubleValue

public double doubleValue()

Specified by:

doubleValue in class Number

compareTo

public int compareTo(Rational pOther)

Specified by:

compareTo in interface Comparable<Rational>

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object pOther)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

times

public Rational times(Rational pOther)

plus

public Rational plus(Rational pOther)

negate

public Rational negate()

minus

public Rational minus(Rational pOther)

reciprocal

public Rational reciprocal()

divides

public Rational divides(Rational pOther)