cc.redberry.rings.poly.univar

Class HenselLifting.bLinearLift

java.lang.Object

cc.redberry.rings.poly.univar.HenselLifting.bLinearLift

All Implemented Interfaces:

HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Enclosing class:

HenselLifting

public static final class HenselLifting.bLinearLift
extends Object
implements HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Linear Hensel lift for BigIntegers arithmetics. Linear Hensel lift always starts from the machine-sized modulus; on each lift() operation modulus is raised as modulus = modulus * initialModulus.

Field Summary

Fields

Modifier and Type	Field and Description
IntegersZp	initialDomain The initial modulus (less than 64-bit)
IntegersZp	ring The modulus

Method Summary

Modifier and Type	Method and Description
UnivariatePolynomial<BigInteger>	aCoFactorMod() Returns first co-factor lifted
UnivariatePolynomial<BigInteger>	aFactorMod() Returns first factor lifted
UnivariatePolynomial<BigInteger>	bCoFactorMod() Returns second co-factor lifted
UnivariatePolynomial<BigInteger>	bFactorMod() Returns second factor lifted
void	lift() Performs single lift step.
void	liftLast() Performs single lift step but don't lift co-factors (xgcd coefficients).
UnivariatePolynomial<BigInteger>	polyMod() Returns initial Z[x] polynomial modulo lifted modulus

Methods inherited from class java.lang.Object

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

Methods inherited from interface cc.redberry.rings.poly.univar.HenselLifting.LiftableQuintet

lift, liftWithCoFactors

Field Detail

initialDomain

public final IntegersZp initialDomain

The initial modulus (less than 64-bit)

ring

public IntegersZp ring

The modulus

Method Detail

polyMod

public UnivariatePolynomial<BigInteger> polyMod()

Description copied from interface: HenselLifting.LiftableQuintet

Returns initial Z[x] polynomial modulo lifted modulus

Specified by:

polyMod in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Returns:

initial Z[x] polynomial modulo lifted modulus

aFactorMod

public UnivariatePolynomial<BigInteger> aFactorMod()

Description copied from interface: HenselLifting.LiftableQuintet

Returns first factor lifted

Specified by:

aFactorMod in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Returns:

first factor lifted

bFactorMod

public UnivariatePolynomial<BigInteger> bFactorMod()

Description copied from interface: HenselLifting.LiftableQuintet

Returns second factor lifted

Specified by:

bFactorMod in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Returns:

second factor lifted

aCoFactorMod

public UnivariatePolynomial<BigInteger> aCoFactorMod()

Description copied from interface: HenselLifting.LiftableQuintet

Returns first co-factor lifted

Specified by:

aCoFactorMod in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Returns:

first co-factor lifted

bCoFactorMod

public UnivariatePolynomial<BigInteger> bCoFactorMod()

Description copied from interface: HenselLifting.LiftableQuintet

Returns second co-factor lifted

Specified by:

bCoFactorMod in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

Returns:

second co-factor lifted

lift

public void lift()

Description copied from interface: HenselLifting.LiftableQuintet

Performs single lift step.

Specified by:

lift in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>

liftLast

public void liftLast()

Description copied from interface: HenselLifting.LiftableQuintet

Performs single lift step but don't lift co-factors (xgcd coefficients).

Specified by:

liftLast in interface HenselLifting.LiftableQuintet<UnivariatePolynomial<BigInteger>>