edu.jas.poly
Class PolynomialComparator<C extends RingElem<C>>

java.lang.Object
  edu.jas.poly.PolynomialComparator<C>

Type Parameters:

C - coefficient type

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator<GenPolynomial<C>>

public class PolynomialComparator<C extends RingElem<C>>
extends java.lang.Object
implements java.io.Serializable, java.util.Comparator<GenPolynomial<C>>

Comparator for polynomials.

Author:

Heinz Kredel.

See Also:

Serialized Form

Field Summary

boolean	reverse
TermOrder	tord

Constructor Summary

PolynomialComparator(TermOrder t, boolean reverse)
Constructor.

Method Summary

int	compare(GenPolynomial<C> p1, GenPolynomial<C> p2) Compare polynomials.
boolean	equals(java.lang.Object o) Equals test of comparator.
java.lang.String	toString() toString.

Methods inherited from class java.lang.Object

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

Field Detail

tord

public final TermOrder tord

reverse

public final boolean reverse

Constructor Detail

PolynomialComparator

public PolynomialComparator(TermOrder t,
                            boolean reverse)

Constructor.

Parameters:

t - TermOrder.

reverse - flag if reverse ordering is requested.

Method Detail

compare

public int compare(GenPolynomial<C> p1,
                   GenPolynomial<C> p2)

Compare polynomials.

Specified by:

compare in interface java.util.Comparator<GenPolynomial<C extends RingElem<C>>>

Parameters:

p1 - first polynomial.

p2 - second polynomial.

Returns:

0 if ( p1 == p2 ), -1 if ( p1 < p2 ) and +1 if ( p1 > p2 ).

equals

public boolean equals(java.lang.Object o)

Equals test of comparator.

Specified by:

equals in interface java.util.Comparator<GenPolynomial<C extends RingElem<C>>>

Overrides:

equals in class java.lang.Object

Parameters:

o - other object.

Returns:

true if this = o, else false.

toString

public java.lang.String toString()

toString.

Overrides:

toString in class java.lang.Object