Package com.singularsys.extensions.field.implementations

Class Rational

java.lang.Object

java.lang.Number

com.singularsys.extensions.field.implementations.Rational

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Rational>

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

A rational number represented as the quotient of two BigIntegers. An immutable type.

Note if using Rational numbers with the PrintVisitor a special rule RationalDivisionPrintRule is needed to ensure divisions are correctly printed. This can be added with

 jep.getPrintVisitor().addSpecialRule(jep.getOperatorTable().getDivide(),
                        new RationalDivisionPrintRule());
 

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static Rational	HALF
static Rational	MINUSONE
static Rational	ONE
static Rational	TWO
static Rational	ZERO

Constructor Summary

Constructors

Constructor	Description
Rational()	Zero
Rational(int numerator)
Rational(int numerator, int denominator)	Create a rational number
Rational(long numerator)
Rational(java.math.BigInteger val)
Rational(java.math.BigInteger num, java.math.BigInteger denom)

Method Summary

Modifier and Type	Method	Description
Rational	add(Rational r)
int	compareTo(Rational num)
Rational	div(Rational r)
double	doubleValue()
boolean	equals(java.lang.Object obj)
float	floatValue()
java.math.BigInteger	getDenominator()
java.math.BigInteger	getNumerator()
int	hashCode()
int	intValue()
long	longValue()
Rational	mul(Rational r)
Rational	neg()
Rational	sub(Rational r)
java.lang.String	toString()
static Rational	valueOf(int a)
static Rational	valueOf(int a, int b)
static Rational	valueOf(long a)

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 Detail

ZERO

public static final Rational ZERO

ONE

public static final Rational ONE

TWO

public static final Rational TWO

MINUSONE

public static final Rational MINUSONE

HALF

public static final Rational HALF

Constructor Detail

Rational

public Rational()

Zero

Rational

public Rational(int numerator,
                int denominator)

Create a rational number

Parameters:

denominator - number on top of fraction

numerator - number on bottom of fraction

Rational

public Rational(int numerator)

Rational

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

Rational

public Rational(long numerator)

Rational

public Rational(java.math.BigInteger val)

Method Detail

getNumerator

public java.math.BigInteger getNumerator()

getDenominator

public java.math.BigInteger getDenominator()

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

add

public Rational add(Rational r)

sub

public Rational sub(Rational r)

mul

public Rational mul(Rational r)

div

public Rational div(Rational r)

neg

public Rational neg()

compareTo

public int compareTo(Rational num)

Specified by:

compareTo in interface java.lang.Comparable<Rational>

valueOf

public static Rational valueOf(int a)

valueOf

public static Rational valueOf(long a)

valueOf

public static Rational valueOf(int a,
                               int b)

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