org.lsmp.djep.groupJep.values
Class Rational

java.lang.Object
  java.lang.Number
      org.lsmp.djep.groupJep.values.Rational

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable

public class Rational
extends java.lang.Number
implements java.lang.Comparable

A Rational number with full precision. Represented as quotien of two numbers (always in most reduced form with posative denominator).

Author:

Rich Morris Created on 05-Mar-2004

See Also:

Serialized Form

Constructor Summary

Rational(java.math.BigInteger num)

Rational(java.math.BigInteger num, java.math.BigInteger den)
Rationals will always be represented in most reduced form with a positive denominator.

Method Summary

Rational	add(Rational arg)
int	compareTo(java.lang.Object arg)
Rational	div(Rational arg)
double	doubleValue()
float	floatValue()
java.math.BigInteger	getDenominator() * Returns the bottom half of the rational.
java.math.BigInteger	getNumerator() Returns the top half of the rational.
int	intValue()
Rational	inverse()
long	longValue()
Rational	mul(Rational arg)
Rational	negate()
Rational	pow(Rational arg)
Rational	sub(Rational arg)
java.lang.String	toString()
static java.lang.Number	valueOf(java.lang.String s)

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

Rational

public Rational(java.math.BigInteger num)

Rational

public Rational(java.math.BigInteger num,
                java.math.BigInteger den)

Rationals will always be represented in most reduced form with a positive denominator.

Method Detail

intValue

public int intValue()

Specified by:

intValue in class java.lang.Number

longValue

public long longValue()

Specified by:

longValue in class java.lang.Number

floatValue

public float floatValue()

Specified by:

floatValue in class java.lang.Number

doubleValue

public double doubleValue()

Specified by:

doubleValue in class java.lang.Number

add

public Rational add(Rational arg)

sub

public Rational sub(Rational arg)

mul

public Rational mul(Rational arg)

div

public Rational div(Rational arg)

pow

public Rational pow(Rational arg)

negate

public Rational negate()

inverse

public Rational inverse()

valueOf

public static java.lang.Number valueOf(java.lang.String s)

getDenominator

public java.math.BigInteger getDenominator()

* Returns the bottom half of the rational.

getNumerator

public java.math.BigInteger getNumerator()

Returns the top half of the rational.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

compareTo

public int compareTo(java.lang.Object arg)

Specified by:

compareTo in interface java.lang.Comparable