calc
Class ComplexPowerSum

java.lang.Object
  |
  +--calc.ComplexPowerSum

public class ComplexPowerSum

extends java.lang.Object

Field Summary

protected Complex[]	coefficients An Array of the coefficients
protected Complex	logCoeff contains the coefficient for a constructed logarithm (which may happen, when integrating z^-1)
protected Complex[]	powers the corresponding powers
protected boolean	valid a flag indicating, that an integration of z^-1 has happened, this flag must be checked, to test if further operations (other than eval()) are allowed.

Constructor Summary

ComplexPowerSum()

ComplexPowerSum(Complex[] coefficients, Complex[] powers)
Nullpowersums (i.e. coefficients.length == 0) are allowed, but not a nullpointer argument!

ComplexPowerSum(Polynom p)
convert a polynomial to a ComplexPowerSum

Method Summary

Complex	eval(Complex z) evaluates the powersum for a certain Complex number
Complex	getCoefficient(int i) return a coefficient of a single indexed monom
Complex[]	getCoefficients() returns all coefficients
BaseCalc	getOperationTree() builds and returns the corresponding operational tree for further calculations
Complex	getPower(int i) returns the power of a single indexed monom
Complex[]	getPowers() returns all powers
void	integrate(Complex constant) integrates the powersum numerically, using the arguments as range
static void	main(java.lang.String[] args) for testing purposes
void	multiply(Complex d) multiplication with a number
void	multiply(ComplexPowerSum p) multiplication with another powersum
void	setCoefficient(int i, Complex value) sets a single specified coefficient
void	setCoefficient(int i, Complex value, Complex power) sets a single specified coefficient with the according power
void	sort() sorts the arrays in ascending order of powers
java.lang.String	toString() for pretty printing: output is of form: X^6 - 3.0X^5 + 2.5X^4 - 0.49999999999999956X^2 + 0.023809523809523885

Methods inherited from class java.lang.Object

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

Field Detail

logCoeff

protected Complex logCoeff

contains the coefficient for a constructed logarithm (which may happen, when integrating z^-1)

valid

protected boolean valid

a flag indicating, that an integration of z^-1 has happened, this flag must be checked, to test if further operations (other than eval()) are allowed. It is set to false, if

coefficients

protected Complex[] coefficients

An Array of the coefficients

powers

protected Complex[] powers

the corresponding powers

Constructor Detail

ComplexPowerSum

public ComplexPowerSum(Complex[] coefficients,
                       Complex[] powers)

Nullpowersums (i.e. coefficients.length == 0) are allowed, but not a nullpointer argument!

ComplexPowerSum

public ComplexPowerSum(Polynom p)

convert a polynomial to a ComplexPowerSum

ComplexPowerSum

public ComplexPowerSum()

Method Detail

getCoefficient

public Complex getCoefficient(int i)
                       throws calc.InvalidException

return a coefficient of a single indexed monom

getPower

public Complex getPower(int i)
                 throws calc.InvalidException

returns the power of a single indexed monom

setCoefficient

public void setCoefficient(int i,
                           Complex value)
                    throws calc.InvalidException

sets a single specified coefficient

setCoefficient

public void setCoefficient(int i,
                           Complex value,
                           Complex power)
                    throws calc.InvalidException

sets a single specified coefficient with the according power

getCoefficients

public Complex[] getCoefficients()
                          throws calc.InvalidException

returns all coefficients

getPowers

public Complex[] getPowers()
                    throws calc.InvalidException

returns all powers

multiply

public void multiply(Complex d)
              throws calc.InvalidException

multiplication with a number

multiply

public void multiply(ComplexPowerSum p)
              throws calc.InvalidException

multiplication with another powersum

eval

public Complex eval(Complex z)

evaluates the powersum for a certain Complex number

sort

public void sort()

sorts the arrays in ascending order of powers

integrate

public void integrate(Complex constant)
               throws calc.InvalidException

integrates the powersum numerically, using the arguments as range

toString

public java.lang.String toString()

for pretty printing: output is of form:

X^6 - 3.0X^5 + 2.5X^4 - 0.49999999999999956X^2 + 0.023809523809523885

Overrides:

toString in class java.lang.Object

getOperationTree

public BaseCalc getOperationTree()

builds and returns the corresponding operational tree for further calculations

main

public static void main(java.lang.String[] args)

for testing purposes