eu.bandm.sig.adlib2

Class LongFraction

java.lang.Object

eu.bandm.sig.adlib2.LongFraction

All Implemented Interfaces:

Comparable<LongFraction>

public class LongFraction
extends Object
implements Comparable<LongFraction>

Representation of fractions.

A fraction is a pair of values, namely the numerator and the denominator, respectively, and represents their quotient.

This class provides fractional arithmetic operations. Note that those are not optimized for high performance or low memory usage. Thus, computations implemented by this class should be used only at construction time of a network. For realtime fractional computations, use LongSignalSourceFraction instead.

Field Summary

Fields

Modifier and Type	Field and Description
static LongFraction	NEGATIVE_INFINITY The fractional representation of negative infinity.
static LongFraction	NOT_A_NUMBER The fractional representation of an undefined quantity.
static LongFraction	ONE The fractional representation of the number one.
static LongFraction	POSITIVE_INFINITY The fractional representation of positive infinity.
static LongFraction	ZERO The fractional representation of the number zero.

Constructor Summary

Constructors

Constructor and Description
LongFraction(long numerator, long denominator)

Method Summary

Modifier and Type	Method and Description
LongFraction	add(LongFraction other)
int	compareTo(LongFraction other)
LongFraction	divide(LongFraction other)
double	doubleValue()
boolean	equals(Object o)
float	floatValue()
long	getDenominator() Returns the denominator of this fraction.
long	getNumerator() Returns the numerator of this fraction.
int	hashCode()
boolean	isNaN()
LongFraction	multiply(LongFraction other)
LongFraction	negate()
LongFraction	reciprocal() Returns the formal reciprocal of this fraction.
int	signum()
LongFraction	subtract(LongFraction other)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ZERO

public static final LongFraction ZERO

The fractional representation of the number zero.

ONE

public static final LongFraction ONE

The fractional representation of the number one.

POSITIVE_INFINITY

public static final LongFraction POSITIVE_INFINITY

The fractional representation of positive infinity.

NEGATIVE_INFINITY

public static final LongFraction NEGATIVE_INFINITY

The fractional representation of negative infinity.

NOT_A_NUMBER

public static final LongFraction NOT_A_NUMBER

The fractional representation of an undefined quantity.

Constructor Detail

LongFraction

public LongFraction(long numerator,
                    long denominator)

Method Detail

getNumerator

public long getNumerator()

Returns the numerator of this fraction.

getDenominator

public long getDenominator()

Returns the denominator of this fraction.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

reciprocal

public LongFraction reciprocal()

Returns the formal reciprocal of this fraction.

Returns:

a fraction where numerator and denominator are exchanged

floatValue

public float floatValue()

doubleValue

public double doubleValue()

isNaN

public boolean isNaN()

compareTo

public int compareTo(LongFraction other)

Specified by:

compareTo in interface Comparable<LongFraction>

signum

public int signum()

add

public LongFraction add(LongFraction other)

subtract

public LongFraction subtract(LongFraction other)

multiply

public LongFraction multiply(LongFraction other)

divide

public LongFraction divide(LongFraction other)

negate

public LongFraction negate()