Package org.apache.commons.imaging.common

Class RationalNumber

java.lang.Object

java.lang.Number

org.apache.commons.imaging.common.RationalNumber

All Implemented Interfaces:

java.io.Serializable

public class RationalNumber
extends java.lang.Number

Rational number, as used by the TIFF image format.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	RationalNumber.Option

Field Summary

Fields

Modifier and Type	Field	Description
int	divisor
int	numerator
private static long	serialVersionUID
private static double	TOLERANCE

Constructor Summary

Constructors

Constructor	Description
RationalNumber(int numerator, int divisor)

Method Summary

Modifier and Type	Method	Description
double	doubleValue()
(package private) static RationalNumber	factoryMethod(long n, long d)
float	floatValue()
private static long	gcd(long a, long b)	Return the greatest common divisor
int	intValue()
long	longValue()
RationalNumber	negate()
java.lang.String	toDisplayString()
java.lang.String	toString()
static RationalNumber	valueOf(double value)	Calculate rational number using successive approximations.

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

TOLERANCE

private static final double TOLERANCE

See Also:

Constant Field Values

numerator

public final int numerator

divisor

public final int divisor

Constructor Detail

RationalNumber

public RationalNumber(int numerator,
                      int divisor)

Method Detail

factoryMethod

static RationalNumber factoryMethod(long n,
                                    long d)

gcd

private static long gcd(long a,
                        long b)

Return the greatest common divisor

negate

public RationalNumber negate()

doubleValue

public double doubleValue()

Specified by:

doubleValue in class java.lang.Number

floatValue

public float floatValue()

Specified by:

floatValue in class java.lang.Number

intValue

public int intValue()

Specified by:

intValue in class java.lang.Number

longValue

public long longValue()

Specified by:

longValue in class java.lang.Number

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toDisplayString

public java.lang.String toDisplayString()

valueOf

public static RationalNumber valueOf(double value)

Calculate rational number using successive approximations.

Parameters:

value - rational number double value

Returns:

the RationalNumber representation of the double value