Package com.singularsys.extensions.polynomials

Class AbstractPNode

java.lang.Object

com.singularsys.extensions.polynomials.AbstractPNode

All Implemented Interfaces:

PNodeI, Serializable, Comparable<PNodeI>

Direct Known Subclasses:

Monomial, PConstant, PFunction, Polynomial, POperator, PVariable

public abstract class AbstractPNode
extends Object
implements PNodeI

Default methods, when more specific methods do not work.

Author:

Rich Morris Created on 22-Dec-2004

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final PolynomialCreator	pc	A reference to the PolynomialCreator instance.

Constructor Summary

Constructors

Constructor	Description
AbstractPNode(PolynomialCreator pc)

Method Summary

Modifier and Type	Method	Description
PNodeI	add(PNodeI node)	Returns the sum of this node and argument
int	compareTo(PNodeI node)	Compares this expression to argument.
PNodeI	div(PNodeI node)	Divides this by the argument.
boolean	equals(Object arg)
boolean	equalsPNode(PNodeI node)	True is nodes represent the same parse trees
PNodeI	invert()	inverts node i.e. 1/x
boolean	isOne()	True if node represents one
boolean	isZero()	True if node represents zero
PNodeI	mul(PNodeI node)	Multiplies this by the argument.
PNodeI	pow(PNodeI node)	Raise this to the argument.
PNodeI	sub(PNodeI node)	Returns the difference between this node and argument

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.singularsys.extensions.polynomials.PNodeI

convertToPolyArray, expand, negate, substitute, toCompactNode, toNode, toString, toString

Field Details

pc

protected final PolynomialCreator pc

A reference to the PolynomialCreator instance.

Constructor Details

AbstractPNode

public AbstractPNode(PolynomialCreator pc)

Method Details

add

public PNodeI add(PNodeI node)
           throws ParseException

Returns the sum of this node and argument

Specified by:

add in interface PNodeI

Parameters:

node - to add

Returns:

node representing the sum

Throws:

ParseException - on error

sub

public PNodeI sub(PNodeI node)
           throws ParseException

Returns the difference between this node and argument

Specified by:

sub in interface PNodeI

Parameters:

node - to subtract

Returns:

node representing the difference

Throws:

ParseException - on error

mul

public PNodeI mul(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Multiplies this by the argument.

Specified by:

mul in interface PNodeI

Throws:

ParseException

div

public PNodeI div(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Divides this by the argument.

Specified by:

div in interface PNodeI

Throws:

ParseException

invert

public PNodeI invert()
              throws ParseException

Description copied from interface: PNodeI

inverts node i.e. 1/x

Specified by:

invert in interface PNodeI

Throws:

ParseException

pow

public PNodeI pow(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Raise this to the argument.

Specified by:

pow in interface PNodeI

Throws:

ParseException

equals

public boolean equals(Object arg)

Specified by:

equals in interface PNodeI

Overrides:

equals in class Object

equalsPNode

public boolean equalsPNode(PNodeI node)

Description copied from interface: PNodeI

True is nodes represent the same parse trees

Specified by:

equalsPNode in interface PNodeI

isZero

public boolean isZero()

Description copied from interface: PNodeI

True if node represents zero

Specified by:

isZero in interface PNodeI

isOne

public boolean isOne()

Description copied from interface: PNodeI

True if node represents one

Specified by:

isOne in interface PNodeI

compareTo

public int compareTo(PNodeI node)

Description copied from interface: PNodeI

Compares this expression to argument. Uses a total ordering of expressions. Returns positive if this node comes after the argument.

Specified by:

compareTo in interface Comparable<PNodeI>

Specified by:

compareTo in interface PNodeI