net.sourceforge.jFuzzyArithmetic.Interval

Class Interval

java.lang.Object

net.sourceforge.jFuzzyArithmetic.Interval.Interval

All Implemented Interfaces:

java.lang.Comparable<Interval>

public class Interval
extends java.lang.Object
implements java.lang.Comparable<Interval>

Author:

cahik@users.sourceforge.net

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Interval(double a, double b) should not be ever called directly use intervalFactory for creation of Interval
protected	Interval(double a, double b, int precision) should not be ever called directly use intervalFactory for creation of Interval

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(Interval other) comparing intervals based on their endpoints
boolean	contains(double value) true if min <= value <= max
boolean	contains(Interval other) true if this minimum is <= other minimum and other maximum is <= this maximum
boolean	containsWithoutEndpoints(double value) true if min < value < max
boolean	equals(java.lang.Object obj)
double	getMax() maximal value of the interval
double	getMidPoint() ((maximum - minimum)/2)+minimum
double	getMin() minimal value of the interval
int	getPrecision() get method for property
double	getWidth() maximum minus minimum
int	hashCode()
Interval	intersection(Interval other) intersection of the two intervals as a interval
boolean	intersects(Interval other) true if the two intervals intercts in any way
Interval	intervalHull(Interval other) construct interval hull of the two intervals
boolean	isDegenerate() true if minimum and maximum of the interval are equal
boolean	isEndpoint(double value) checks if the value is one of the endpoints of the interval
boolean	isMorePositive() return true if the midpoint of the interval is higher or equal to 0
boolean	isNegative() true if the higher value of the interval is lower then 0
boolean	isNotNegative() true if the lower value of the interval is higher or equal to 0
boolean	isNotPositive() true if the higher value of the interval is lower or equal then 0
boolean	isPositive() true if the lower value of the interval is higher to 0
void	round(int numberOfDigits) rounds the values of the interval to specified number of digits
java.lang.String	toString()
Interval	union(Interval other) union of the two intervals as a interval

Methods inherited from class java.lang.Object

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

Constructor Detail

Interval

protected Interval(double a,
        double b,
        int precision)

should not be ever called directly use intervalFactory for creation of Interval

Parameters:

a -

b -

precision -

Interval

protected Interval(double a,
        double b)

should not be ever called directly use intervalFactory for creation of Interval

Parameters:

a -

b -

Method Detail

getWidth

public double getWidth()

maximum minus minimum

Returns:

getMin

public double getMin()

minimal value of the interval

Returns:

getMax

public double getMax()

maximal value of the interval

Returns:

getMidPoint

public double getMidPoint()

((maximum - minimum)/2)+minimum

Returns:

getPrecision

public int getPrecision()

get method for property

Returns:

contains

public boolean contains(double value)

true if min <= value <= max

Parameters:

value -

Returns:

containsWithoutEndpoints

public boolean containsWithoutEndpoints(double value)

true if min < value < max

Parameters:

value -

Returns:

contains

public boolean contains(Interval other)

true if this minimum is <= other minimum and other maximum is <= this maximum

Parameters:

other -

Returns:

isEndpoint

public boolean isEndpoint(double value)

checks if the value is one of the endpoints of the interval

Parameters:

value -

Returns:

isDegenerate

public boolean isDegenerate()

true if minimum and maximum of the interval are equal

Returns:

intersects

public boolean intersects(Interval other)

true if the two intervals intercts in any way

Parameters:

other -

Returns:

intersection

public Interval intersection(Interval other)
                      throws java.lang.ArithmeticException

intersection of the two intervals as a interval

Parameters:

other -

Returns:

Throws:

java.lang.ArithmeticException - if the two intervals does not intersect the intersection cannot be constructed

union

public Interval union(Interval other)
               throws java.lang.ArithmeticException

union of the two intervals as a interval

Parameters:

other -

Returns:

Throws:

java.lang.ArithmeticException - if the two intervals does not intersect the union cannot be constructed

intervalHull

public Interval intervalHull(Interval other)

construct interval hull of the two intervals

Parameters:

other -

Returns:

isNegative

public boolean isNegative()

true if the higher value of the interval is lower then 0

Returns:

isNotPositive

public boolean isNotPositive()

true if the higher value of the interval is lower or equal then 0

Returns:

isPositive

public boolean isPositive()

true if the lower value of the interval is higher to 0

Returns:

isNotNegative

public boolean isNotNegative()

true if the lower value of the interval is higher or equal to 0

Returns:

isMorePositive

public boolean isMorePositive()

return true if the midpoint of the interval is higher or equal to 0

Returns:

round

public void round(int numberOfDigits)

rounds the values of the interval to specified number of digits

Parameters:

numberOfDigits -

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

compareTo

public int compareTo(Interval other)

comparing intervals based on their endpoints

Specified by:

compareTo in interface java.lang.Comparable<Interval>

Parameters:

other -

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object