webcab.lib.finance.pricing.core.util.functions
Class ConstantFunction

java.lang.Object
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  +--webcab.lib.finance.pricing.core.util.functions.MultidimFImpl
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        +--webcab.lib.finance.pricing.core.util.functions.MultidimKOrderDiffFImpl
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              +--webcab.lib.finance.pricing.core.util.functions.IntervalRatImpl
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                    +--webcab.lib.finance.pricing.core.util.functions.RatImpl
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                          +--webcab.lib.finance.pricing.core.util.functions.PolImpl
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                                +--webcab.lib.finance.pricing.core.util.functions.MonImpl
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                                      +--webcab.lib.finance.pricing.core.util.functions.ConstFImpl
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                                            +--webcab.lib.finance.pricing.core.util.functions.ConstantFunction

All Implemented Interfaces:

ConstF, webcab.lib.finance.pricing.core.util.functions.FieldElement, Function, IntervalRat, KOrderDiff, Mon, MultidimF, MultidimKOrderDiffF, Pol, Rat, webcab.lib.finance.pricing.core.util.functions.RingElement, webcab.lib.finance.pricing.core.util.functions.Symbolic

public class ConstantFunction

extends ConstFImpl

implements KOrderDiff

Implementation of the Constant function.

Nested Class Summary

Nested classes inherited from class webcab.lib.finance.pricing.core.util.functions.MultidimFImpl

MultidimFImpl.Composition

Field Summary

Fields inherited from class webcab.lib.finance.pricing.core.util.functions.IntervalRatImpl

limitPoints

Constructor Summary

ConstantFunction(double value)
Constructor of the ConstantFunction class.

Method Summary

Function	differentiate(int k) Returns the k-th order differential of the function.
double	getKOrderDerivative(int k, double x) Returns the k-th order derivative of the constant function which happens to be zero for any strictly positive value of k and for any point at which the derivative is evaluated.
double	getValueAt(double x) Returns the value of the constants function at a given point.

Methods inherited from class webcab.lib.finance.pricing.core.util.functions.ConstFImpl

add_inv, add, comp, differentiate, div_inv, div, equalCoef, equals, equalSignature, extension, getCoef, getConstantValue, getKOrderDerivative, getSignature, getValueAt, isSubfield, mul, setCoef, setConstantValue, setSignature, sub, toString

Methods inherited from class webcab.lib.finance.pricing.core.util.functions.MonImpl

addMonom, canonicalForm, comp, getMonom, getNMonoms, getP, getQ, isMon, isZero, mulMon, mulPol, removeMonom, simplify, toMonR

Methods inherited from class webcab.lib.finance.pricing.core.util.functions.RatImpl

divide, divRat, getFunction, getFunctionForInterval, getFunctionForPoint, getFunctions, getIntervalForPoint, getLimitPoint, getNIntervals, getNLimitPoints, getQuotient, getRemainder, getTotalIntervals, isPol, isRat, mul_inv, mulRat, setP1, setQ1, toRat

Methods inherited from class webcab.lib.finance.pricing.core.util.functions.IntervalRatImpl

compMulti, getLimitPoints, getNVariables, initGeneral, initOneVariable, initThreeVariables, initTwoVariables, integrate, integrateFrom, one, toFunction, toSurface, zero

Methods inherited from class webcab.lib.finance.pricing.core.util.functions.MultidimFImpl

isFunction, isSurface

Methods inherited from class java.lang.Object

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

Methods inherited from interface webcab.lib.finance.pricing.util.functions.Function

integrate, integrateFrom

Methods inherited from interface webcab.lib.finance.pricing.core.util.functions.MultidimF

add_inv, add, comp, compMulti, div, extension, getNVariables, getValueAt, isFunction, isSubfield, isSurface, mul_inv, mul, one, sub, toFunction, toSurface, zero

Methods inherited from interface webcab.lib.finance.pricing.core.util.functions.MultidimKOrderDiffF

differentiate, getKOrderDerivative

Methods inherited from interface webcab.lib.finance.pricing.core.util.functions.Pol

getMonom, getNMonoms, isMon, toMonR

Methods inherited from interface webcab.lib.finance.pricing.core.util.functions.Rat

divide, getP, getQ, getQuotient, getRemainder, isPol, isZero

Methods inherited from interface webcab.lib.finance.pricing.core.util.functions.IntervalRat

canonicalForm, getFunction, getFunctionForInterval, getFunctionForPoint, getFunctions, getIntervalForPoint, getLimitPoint, getLimitPoints, getNIntervals, getNLimitPoints, getTotalIntervals, isRat, simplify, toRat

Constructor Detail

ConstantFunction

public ConstantFunction(double value)

Constructor of the ConstantFunction class.

Parameters:

value - the constant value taken by the constant function.

Method Detail

getValueAt

public double getValueAt(double x)

Returns the value of the constants function at a given point.

Specified by:

getValueAt in interface Function

Parameters:

x - the point at which the constant function is evaluated.

Returns:

double

getKOrderDerivative

public double getKOrderDerivative(int k,
                                  double x)

Returns the k-th order derivative of the constant function which happens to be zero for any strictly positive value of k and for any point at which the derivative is evaluated.

Specified by:

getKOrderDerivative in interface KOrderDiff

Parameters:

k - the order of the derivative which is evaluated.

x - the point at which the derivative is evaluated.

Returns:

double

differentiate

public Function differentiate(int k)

Returns the k-th order differential of the function. Please note that this parameter can be zero in which case the function itself will be returned.

Specified by:

differentiate in interface KOrderDiff

Parameters:

k - the order of the differential of the function which is returned.

Returns:

Function