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53   *
54   * Portions of this software are based upon public domain software
55   * originally written at the National Center for Supercomputing Applications,
56   * University of Illinois, Urbana-Champaign.
57    *
58    * Portions of this software are based upon public domain software
59    * originally written at the National Center for Supercomputing Applications,
60    * University of Illinois, Urbana-Champaign.
61    */
62   
63   package org.apache.poi.hpsf.littleendian;
64   
65   /**
66    * <p>Represents an unsigned double word (4 bytes).</p>
67    *
68    * @author Rainer Klute (klute@rainer-klute.de)
69    * @version $Id: DWord.java,v 1.3 2002/05/03 07:29:09 klute Exp $
70    * @since 2002-02-09
71    */
72   public class DWord extends LittleEndian
73   {
74   
75       /**
76        * <p>Creates a {@link DWord} and reads its value from a byte
77        * array.</p>
78        *
79        * @param src The byte array to read from.
80        *
81        * @param offset The offset of the first byte to read.
82        */
83       public DWord(final byte[] src, final int offset)
84       {
85           super(src, offset);
86       }
87   
88   
89   
90       public final static int LENGTH = 4;
91   
92       public int length()
93       {
94           return LENGTH;
95       }
96   
97   
98   
99       /**
100       * <p>Returns the integral value of this {@link DWord}.</p>
101       *
102       * <p><strong>FIXME:</strong> Introduce a superclass for the
103       * numeric types and make this a method of the superclass!</p>
104       */
105      public int intValue()
106      {
107          int value = 0;
108          final int length = length();
109          for (int i = 0; i < length; i++)
110          {
111              final int b = 0xFF & bytes[i];
112              value = value << 8 | b;
113          }
114          return value;
115      }
116  
117  }
118