edu.gwu.lintool

Class ComplexNumber

java.lang.Object

edu.gwu.lintool.ComplexNumber

Direct Known Subclasses:

ComplexImpl

public abstract class ComplexNumber
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
double	angle The angle (theta) in radians, which should be between 0 and 2π.
double	im The imaginary part.
double	re The real part.

Constructor Summary

Constructors

Constructor and Description
ComplexNumber()

Method Summary

Modifier and Type	Method and Description
abstract ComplexNumber	add(ComplexNumber c) Add another complex number to this one, and return a new instance that has the sum.
abstract double	angle() Compute and return the angle in radians, ensuring that it's between 0 and 2π.
abstract ComplexNumber	conjugate() Return the conjugate.
abstract double	magnitude() Return the magnitude.
static ComplexNumber	makeComplexNumber(double re, double im) Make an instance of a complex number with given real and imaginary parts.
abstract ComplexNumber	mult(ComplexNumber c) Multiply another complex number into this one, and return a new instance that has the product.
abstract ComplexNumber	mult(double a) Multiply a real number into this complex number, and return a new instance that has the product.
abstract ComplexNumber	pow(int n) Raise this complex number to the power n, and return a new instance that has the power.
abstract ComplexNumber	sub(ComplexNumber c) Subtract another complex number from this one, and return a new instance that has the difference.
java.lang.String	toString() Overrides toString() in Object to print the real and imaginary parts.

Methods inherited from class java.lang.Object

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

Field Detail

re

public double re

The real part.

im

public double im

The imaginary part.

angle

public double angle

The angle (theta) in radians, which should be between 0 and 2π.

Constructor Detail

ComplexNumber

public ComplexNumber()

Method Detail

magnitude

public abstract double magnitude()

Return the magnitude.

angle

public abstract double angle()

Compute and return the angle in radians, ensuring that it's between 0 and 2π.

add

public abstract ComplexNumber add(ComplexNumber c)

Add another complex number to this one, and return a new instance that has the sum.

sub

public abstract ComplexNumber sub(ComplexNumber c)

Subtract another complex number from this one, and return a new instance that has the difference.

mult

public abstract ComplexNumber mult(ComplexNumber c)

Multiply another complex number into this one, and return a new instance that has the product.

mult

public abstract ComplexNumber mult(double a)

Multiply a real number into this complex number, and return a new instance that has the product.

pow

public abstract ComplexNumber pow(int n)

Raise this complex number to the power n, and return a new instance that has the power.

conjugate

public abstract ComplexNumber conjugate()

Return the conjugate.

toString

public java.lang.String toString()

Overrides toString() in Object to print the real and imaginary parts.

Overrides:

toString in class java.lang.Object

makeComplexNumber

public static ComplexNumber makeComplexNumber(double re,
                                              double im)

Make an instance of a complex number with given real and imaginary parts.