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/*
* Copyright (c) 2008, Manuel Mausz <manuel at mausz.at>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the copyright holders nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
/**
* Complex encapsulate a complex value
*
* @version 1.0
* @author Manuel Mausz (manuel at mausz.at)
* @author http://manuel.mausz.at/
*/
final public class Complex extends CalcValue
{
final private double real;
final private double img;
/**
* Constructor
*
* @param real real part
* @param img imaginary part
*/
Complex(double real, double img)
{
addOps();
this.real = real;
this.img = img;
}
/**
* Add supported operations
*/
private void addOps()
{
addOp(new CalcOperator("+"), "add");
addOp(new CalcOperator("-"), "sub");
addOp(new CalcOperator("*"), "mul");
}
/**
* @return real part
*/
public double getReal()
{
return real;
}
/**
* @return imaginary part
*/
public double getImg()
{
return img;
}
/**
* Converts instance to string
*
* @return string
*/
public String toString()
{
return real + " " + img;
}
/**
* Addition
*
* @param val
* @return new Complex instance
*/
public Complex add(Complex val)
{
return new Complex(real + val.getReal(), img + val.getImg());
}
/**
* Subtraction
*
* @param val
* @return new Complex instance
*/
public Complex sub(Complex val)
{
return new Complex(real - val.getReal(), img - val.getImg());
}
/**
* Multiplication
*
* @param val
* @return new Complex instance
*/
public Complex mul(Complex val)
{
double realnew = real * val.getReal() - img * val.getImg();
double imgnew = real * val.getImg() + img * val.getReal();
return new Complex(realnew, imgnew);
}
}