com.clarkparsia.pellet.datatypes.types.real

Class Rational

java.lang.Object

java.lang.Number

com.clarkparsia.pellet.datatypes.types.real.Rational

All Implemented Interfaces:

Serializable, Comparable<Rational>

public class Rational
extends Number
implements Comparable<Rational>

Title: Rational

Description: Object representation of rational numbers.

Note: care should be exercised if Rational objects are used as keys in a SortedMap or elements in a SortedSet since Rational's natural ordering is inconsistent with equals. See Comparable, SortedMap or SortedSet for more information.

Copyright: Copyright (c) 2009

Company: Clark & Parsia, LLC.

Author:

Mike Smith

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Rational(Number numerator, Number denominator) Construct a rational number from

Method Summary

Modifier and Type	Method and Description
static int	compare(Rational a, Rational b)
int	compareTo(Rational that)
double	doubleValue()
boolean	equals(Object obj) Compares this Rational with the specified Object for equality.
float	floatValue()
Number	getDenominator()
Number	getNumerator()
Number	getQuotient()
int	hashCode()
int	intValue()
boolean	isQuotientExact()
long	longValue()
int	signum()
static Rational	simplify(Rational r)
String	toString()
static Rational	valueOf(String s)

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

Rational

public Rational(Number numerator,
                Number denominator)

Construct a rational number from

Parameters:

numerator - An integer value

denominator - A positive integer value

Throws:

IllegalArgumentException - if this condition does not hold for the input parameters OWLRealUtils.acceptable(numerator) && OWLRealUtils.isInteger(numerator) && OWLRealUtils.acceptable(denominator) && OWLRealUtils.isInteger(denominator) && denominator > 0

Method Detail

compare

public static int compare(Rational a,
                          Rational b)

valueOf

public static Rational valueOf(String s)
                        throws NumberFormatException

Throws:

NumberFormatException

simplify

public static Rational simplify(Rational r)

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Compares this Rational with the specified Object for equality. Unlike compareTo, this method considers two Rational objects equal only if they are equal in numerator and denominator.

Overrides:

equals in class Object

Parameters:

obj - Object to which this Rational is to be compared

Returns:

true> if and only if the specified Object is a Rational whose numerator and denominator are equal to this Rational's.

compareTo

public int compareTo(Rational that)

Specified by:

compareTo in interface Comparable<Rational>

doubleValue

public double doubleValue()

Specified by:

doubleValue in class Number

floatValue

public float floatValue()

Specified by:

floatValue in class Number

getDenominator

public Number getDenominator()

getNumerator

public Number getNumerator()

getQuotient

public Number getQuotient()

intValue

public int intValue()

Specified by:

intValue in class Number

isQuotientExact

public boolean isQuotientExact()

longValue

public long longValue()

Specified by:

longValue in class Number

signum

public int signum()