Download | Plain Text | No Line Numbers 

  1. /*
  2.  * Copyright (c) 2008, Manuel Mausz <manuel at mausz.at>
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions are met:
  7.  *     * Redistributions of source code must retain the above copyright
  8.  *       notice, this list of conditions and the following disclaimer.
  9.  *     * Redistributions in binary form must reproduce the above copyright
  10.  *       notice, this list of conditions and the following disclaimer in the
  11.  *       documentation and/or other materials provided with the distribution.
  12.  *     * Neither the name of the copyright holders nor the
  13.  *       names of its contributors may be used to endorse or promote products
  14.  *       derived from this software without specific prior written permission.
  15.  *
  16.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17.  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18.  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19.  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20.  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  22.  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  23.  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24.  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  25.  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  26.  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  27.  * DAMAGE.
  28.  */
  29.  
  30. /**
  31.  * Complex encapsulate a complex value
  32.  *
  33.  * @version 1.0
  34.  * @author  Manuel Mausz (manuel at mausz.at)
  35.  * @author  http://manuel.mausz.at/
  36.  */
  37. public class Complex extends CalcValue
  38. {
  39.   private int real;
  40.   private int img;
  41.  
  42.   /**
  43.    * Constructor
  44.    *
  45.    * @param real real part
  46.    * @param img imaginary part
  47.    */
  48.   Complex(int real, int img)
  49.   {
  50.     addOps();
  51.     this.real = real;
  52.     this.img  = img;
  53.   }
  54.  
  55.   /**
  56.    * Add supported operations
  57.    */
  58.   private void addOps()
  59.   {
  60.     addOp(new CalcOperator("+"), "add");
  61.     addOp(new CalcOperator("-"), "sub");
  62.   }
  63.  
  64.   /**
  65.    * @return real part
  66.    */
  67.   public int getReal()
  68.   {
  69.     return real;
  70.   }
  71.  
  72.   /**
  73.    * @return imaginary part
  74.    */
  75.   public int getImg()
  76.   {
  77.     return img;
  78.   }
  79.  
  80.  
  81.   /**
  82.    * Converts instance to string
  83.    *
  84.    * @return string
  85.    */
  86.   public String toString()
  87.   {
  88.     return String.format("%d %d", real, img);
  89.   }
  90.  
  91.   /**
  92.    * Addition
  93.    *
  94.    * @param val
  95.    */
  96.   public void add(Complex val)
  97.   {
  98.     real += val.getReal();
  99.     img  += val.getImg();
  100.   }
  101.  
  102.   /**
  103.    * Subtraction
  104.    *
  105.    * @param val
  106.    */
  107.   public void sub(Complex val)
  108.   {
  109.     real -= val.getReal();
  110.     img  -= val.getImg();
  111.   }
  112. }
  113.