org.lsmp.djep.sjep
Class PConstant

java.lang.Object
  org.lsmp.djep.sjep.AbstractPNode
      org.lsmp.djep.sjep.PConstant

All Implemented Interfaces:

PNodeI

public class PConstant
extends AbstractPNode

Represents a constant.

Author:

Rich Morris Created on 14-Dec-2004

Field Summary

Fields inherited from class org.lsmp.djep.sjep.AbstractPNode

pc

Constructor Summary

PConstant(PolynomialCreator pc, java.lang.Object o)

Method Summary

PNodeI	add(PNodeI c) Adds a node to this one.
int	compareTo(PConstant c)
PNodeI	div(PNodeI c) Divides this by the argument.
boolean	equals(PNodeI node) True is nodes represent the same parse trees
PNodeI	expand() complete expansion. (1+x)^2 --> 1+2*x+x^2
int	intValue()
PNodeI	invert() inverts node i.e. 1/x
boolean	isInfinity()
boolean	isInteger()
boolean	isMinusOne()
boolean	isNan()
boolean	isNegative()
boolean	isOne() True if node represents one
boolean	isPositive()
boolean	isZero() True if node represents zero
PNodeI	mul(PNodeI c) Multiplies this by the argument.
PNodeI	negate() negates node i.e.
PNodeI	pow(PNodeI c) Raise this to the argument.
PNodeI	sub(PNodeI c) Subtracts the argument from this.
Node	toNode() Converts the node to standard JEP format.
java.lang.String	toString() Produces a string representation of the argument.

Methods inherited from class org.lsmp.djep.sjep.AbstractPNode

compareTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.lsmp.djep.sjep.PNodeI

equals

Constructor Detail

PConstant

public PConstant(PolynomialCreator pc,
                 java.lang.Object o)

Method Detail

negate

public PNodeI negate()
              throws ParseException

Description copied from interface: PNodeI

negates node i.e. -x

Specified by:

negate in interface PNodeI

Overrides:

negate in class AbstractPNode

Throws:

ParseException

add

public PNodeI add(PNodeI c)
           throws ParseException

Description copied from interface: PNodeI

Adds a node to this one.

Specified by:

add in interface PNodeI

Overrides:

add in class AbstractPNode

Throws:

ParseException

sub

public PNodeI sub(PNodeI c)
           throws ParseException

Description copied from interface: PNodeI

Subtracts the argument from this.

Specified by:

sub in interface PNodeI

Overrides:

sub in class AbstractPNode

Throws:

ParseException

mul

public PNodeI mul(PNodeI c)
           throws ParseException

Description copied from interface: PNodeI

Multiplies this by the argument.

Specified by:

mul in interface PNodeI

Overrides:

mul in class AbstractPNode

Throws:

ParseException

div

public PNodeI div(PNodeI c)
           throws ParseException

Description copied from interface: PNodeI

Divides this by the argument.

Specified by:

div in interface PNodeI

Overrides:

div in class AbstractPNode

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

Overrides:

invert in class AbstractPNode

Throws:

ParseException

pow

public PNodeI pow(PNodeI c)
           throws ParseException

Description copied from interface: PNodeI

Raise this to the argument.

Specified by:

pow in interface PNodeI

Overrides:

pow in class AbstractPNode

Throws:

ParseException

toString

public java.lang.String toString()

Description copied from interface: PNodeI

Produces a string representation of the argument.

Specified by:

toString in interface PNodeI

Overrides:

toString in class java.lang.Object

isZero

public boolean isZero()

Description copied from interface: PNodeI

True if node represents zero

Specified by:

isZero in interface PNodeI

Overrides:

isZero in class AbstractPNode

isOne

public boolean isOne()

Description copied from interface: PNodeI

True if node represents one

Specified by:

isOne in interface PNodeI

Overrides:

isOne in class AbstractPNode

isMinusOne

public boolean isMinusOne()

isInfinity

public boolean isInfinity()

isNan

public boolean isNan()

isPositive

public boolean isPositive()

isNegative

public boolean isNegative()

isInteger

public boolean isInteger()

intValue

public int intValue()

toNode

public Node toNode()
            throws ParseException

Description copied from interface: PNodeI

Converts the node to standard JEP format.

Throws:

ParseException

compareTo

public int compareTo(PConstant c)

equals

public boolean equals(PNodeI node)

Description copied from interface: PNodeI

True is nodes represent the same parse trees

Specified by:

equals in interface PNodeI

Overrides:

equals in class AbstractPNode

expand

public PNodeI expand()

Description copied from interface: PNodeI

complete expansion. (1+x)^2 --> 1+2*x+x^2