Polynomial (Java Expression Parser 2.4.2 API)

java.lang.Object
- java.lang.Number
- - org.lsmp.djep.groupJep.values.Polynomial

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

FreeGroupElement
```
public class Polynomial
extends Number
```
The ring of polynomials over a ring R.

Author:

Rich Morris Created on 09-Mar-2004

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description

Polynomial(RingI baseRing, String symbol, Number[] coeffs)
Construct a polynomial over a ring.

Constructors
Constructor and Description
`Polynomial(RingI baseRing, String symbol, Number[] coeffs)` Construct a polynomial over a ring.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Polynomial`	`add(Polynomial poly)`
`Complex`	`calculateComplexValue(Complex rootVal)` returns the complex value of this polynomial.
`Number`	`calculateValue(Number rootVal)`
`Polynomial`	`div(Polynomial poly)`
`double`	`doubleValue()` value of constant coeff.
`boolean`	`equals(Polynomial n)`
`float`	`floatValue()` value of constant coeff.
`RingI`	`getBaseRing()`
`Number`	`getCoeff(int i)`
`Number[]`	`getCoeffs()` Returns the coefficients of polynomial.
`int`	`getDegree()`
`String`	`getSymbol()`
`int`	`intValue()` value of constant coeff.
`boolean`	`isConstantPoly()` Is this a constant polynomial?
`long`	`longValue()` value of constant coeff.
`Polynomial`	`mul(Polynomial poly)`
`Polynomial`	`pow(int exp)`
`protected void`	`setCoeffs(Number[] coeffs)` Sub classes can change the coefficients.
`Polynomial`	`sub(Polynomial poly)`
`String`	`toString()`
`protected Polynomial`	`valueOf(Number[] lcoeffs)` Factory method to create a polynomial with the given coefficients.

Methods inherited from class java.lang.Number
byteValue, shortValue

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Polynomial
```
public Polynomial(RingI baseRing,
                  String symbol,
                  Number[] coeffs)
```
    Construct a polynomial over a ring. In general the valueOf method should be used to construct a new polynomial.
    
    Parameters:
    
    baseRing - the underlying ring of the polynomial.
    
    symbol - the symbol used to display the polynomial
    
    coeffs - an array of coeficients in the base ring coeff[0] is constant, coeff[1] is coefficient of t etc.
- Method Detail
  - setCoeffs
```
protected void setCoeffs(Number[] coeffs)
```
    Sub classes can change the coefficients. Other methods should treat polynomials as imutable.
  - valueOf
```
protected Polynomial valueOf(Number[] lcoeffs)
```
    Factory method to create a polynomial with the given coefficients. Sub classes should overwrite this method to costruct objects of the correct type.
  - add
```
public Polynomial add(Polynomial poly)
```
  - sub
```
public Polynomial sub(Polynomial poly)
```
  - mul
```
public Polynomial mul(Polynomial poly)
```
  - div
```
public Polynomial div(Polynomial poly)
```
  - pow
```
public Polynomial pow(int exp)
```
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - getDegree
```
public int getDegree()
```
  - getSymbol
```
public String getSymbol()
```
  - getCoeffs
```
public Number[] getCoeffs()
```
    Returns the coefficients of polynomial. TODO use defensive copying
    
    Returns:
    
    the array of coefficients, constant coefficient is element 0.
  - getCoeff
```
public Number getCoeff(int i)
```
  - getBaseRing
```
public RingI getBaseRing()
```
  - intValue
```
public int intValue()
```
    value of constant coeff.
    
    Specified by:
    
    intValue in class Number
  - longValue
```
public long longValue()
```
    value of constant coeff.
    
    Specified by:
    
    longValue in class Number
  - floatValue
```
public float floatValue()
```
    value of constant coeff.
    
    Specified by:
    
    floatValue in class Number
  - doubleValue
```
public double doubleValue()
```
    value of constant coeff.
    
    Specified by:
    
    doubleValue in class Number
  - isConstantPoly
```
public boolean isConstantPoly()
```
    Is this a constant polynomial?
  - equals
```
public boolean equals(Polynomial n)
```
  - calculateComplexValue
```
public Complex calculateComplexValue(Complex rootVal)
```
    returns the complex value of this polynomial. Where the value of the symbol is replaced by rootVal.
  - calculateValue
```
public Number calculateValue(Number rootVal)
```

Class Polynomial

Constructor Summary

Method Summary

Methods inherited from class java.lang.Number

Methods inherited from class java.lang.Object

Constructor Detail

Polynomial

Method Detail

setCoeffs

valueOf

add

sub

mul

div

pow

toString

getDegree

getSymbol

getCoeffs

getCoeff

getBaseRing

intValue

longValue

floatValue

doubleValue

isConstantPoly

equals

calculateComplexValue

calculateValue