edu.jas.ufd
Class GreatestCommonDivisorModular

java.lang.Object
  edu.jas.ufd.GreatestCommonDivisorAbstract<BigInteger>
      edu.jas.ufd.GreatestCommonDivisorModular

All Implemented Interfaces:

GreatestCommonDivisor<BigInteger>

public class GreatestCommonDivisorModular
extends GreatestCommonDivisorAbstract<BigInteger>

Greatest common divisor algorithms with modular computation and chinese remainder algorithm.

Author:

Heinz Kredel

Field Summary

protected GreatestCommonDivisorAbstract<BigInteger>	iufd
protected GreatestCommonDivisorAbstract<ModInteger>	mufd

Constructor Summary

GreatestCommonDivisorModular()
Constructor to set recursive algorithm.

GreatestCommonDivisorModular(boolean simple)
Constructor to set recursive algorithm.

Method Summary

GenPolynomial<BigInteger>	baseGcd(GenPolynomial<BigInteger> P, GenPolynomial<BigInteger> S) Univariate GenPolynomial greatest comon divisor.
GenPolynomial<BigInteger>	gcd(GenPolynomial<BigInteger> P, GenPolynomial<BigInteger> S) GenPolynomial greatest comon divisor, modular algorithm.
GenPolynomial<GenPolynomial<BigInteger>>	recursiveGcd(GenPolynomial<GenPolynomial<BigInteger>> P, GenPolynomial<GenPolynomial<BigInteger>> S) Univariate GenPolynomial recursive greatest comon divisor.

Methods inherited from class edu.jas.ufd.GreatestCommonDivisorAbstract

baseContent, basePrimitivePart, baseSquarefreeFactors, baseSquarefreePart, content, divide, gcd, lcm, primitivePart, recursiveContent, recursivePrimitivePart, recursiveSquarefreeFactors, recursiveSquarefreePart, resultant, squarefreeFactors, squarefreePart

Methods inherited from class java.lang.Object

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

Field Detail

mufd

protected final GreatestCommonDivisorAbstract<ModInteger> mufd

iufd

protected final GreatestCommonDivisorAbstract<BigInteger> iufd

Constructor Detail

GreatestCommonDivisorModular

public GreatestCommonDivisorModular()

Constructor to set recursive algorithm. Use modular evaluation GCD algorithm.

GreatestCommonDivisorModular

public GreatestCommonDivisorModular(boolean simple)

Constructor to set recursive algorithm.

Parameters:

simple - , true if the simple PRS should be used.

Method Detail

baseGcd

public GenPolynomial<BigInteger> baseGcd(GenPolynomial<BigInteger> P,
                                         GenPolynomial<BigInteger> S)

Univariate GenPolynomial greatest comon divisor. Delegate to subresultant baseGcd, should not be needed.

Specified by:

baseGcd in class GreatestCommonDivisorAbstract<BigInteger>

Parameters:

P - univariate GenPolynomial.

S - univariate GenPolynomial.

Returns:

gcd(P,S).

recursiveGcd

public GenPolynomial<GenPolynomial<BigInteger>> recursiveGcd(GenPolynomial<GenPolynomial<BigInteger>> P,
                                                             GenPolynomial<GenPolynomial<BigInteger>> S)

Univariate GenPolynomial recursive greatest comon divisor. Delegate to subresultant recursiveGcd, should not be needed.

Specified by:

recursiveGcd in class GreatestCommonDivisorAbstract<BigInteger>

Parameters:

P - univariate recursive GenPolynomial.

S - univariate recursive GenPolynomial.

Returns:

gcd(P,S).

gcd

public GenPolynomial<BigInteger> gcd(GenPolynomial<BigInteger> P,
                                     GenPolynomial<BigInteger> S)

GenPolynomial greatest comon divisor, modular algorithm.

Specified by:

gcd in interface GreatestCommonDivisor<BigInteger>

Overrides:

gcd in class GreatestCommonDivisorAbstract<BigInteger>

Parameters:

P - GenPolynomial.

S - GenPolynomial.

Returns:

gcd(P,S).