1    /* ====================================================================
2     * The Apache Software License, Version 1.1
3     *
4     * Copyright (c) 2002 The Apache Software Foundation.  All rights
5     * reserved.
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8     * modification, are permitted provided that the following conditions
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11    * 1. Redistributions of source code must retain the above copyright
12    *    notice, this list of conditions and the following disclaimer.
13    *
14    * 2. Redistributions in binary form must reproduce the above copyright
15    *    notice, this list of conditions and the following disclaimer in
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20    *    if any, must include the following acknowledgment:
21    *       "This product includes software developed by the
22    *        Apache Software Foundation (http://www.apache.org/)."
23    *    Alternately, this acknowledgment may appear in the software itself,
24    *    if and wherever such third-party acknowledgments normally appear.
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26    * 4. The names "Apache" and "Apache Software Foundation" and
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31    * 5. Products derived from this software may not be called "Apache",
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49    * This software consists of voluntary contributions made by many
50    * individuals on behalf of the Apache Software Foundation.  For more
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53    */
54   
55   package org.apache.poi.hssf.record.formula;
56   
57   import org.apache.poi.util.LittleEndian;
58   import org.apache.poi.hssf.util.SheetReferences;
59   /**
60    * Number
61    * Stores a floating point value in a formula
62    * value stored in a 8 byte field using IEEE notation
63    * @author  Avik Sengupta
64    * @author Jason Height (jheight at chariot dot net dot au)
65    */
66   
67   public class NumberPtg
68       extends Ptg
69   {
70       public final static int  SIZE = 9;
71       public final static byte sid  = 0x1f;
72       private double            field_1_value;
73   
74       private NumberPtg() {
75         //Required for clone methods
76       }
77           
78       /** Create a NumberPtg from a byte array read from disk */
79       public NumberPtg(byte [] data, int offset)
80       {
81           setValue(LittleEndian.getDouble(data, offset + 1));
82       }
83       
84       /** Create a NumberPtg from a string representation of  the number
85        *  Number format is not checked, it is expected to be validated in the parser
86        *   that calls this method. 
87        *  @param value : String representation of a floating point number
88        */
89       public NumberPtg(String value) {
90           setValue(Double.parseDouble(value));
91       }
92       
93       
94       public void setValue(double value)
95       {
96           field_1_value = value;
97       }
98       
99       
100      public double getValue()
101      {
102          return field_1_value;
103      }
104  
105      public void writeBytes(byte [] array, int offset)
106      {
107          array[ offset + 0 ] = sid;
108          LittleEndian.putDouble(array, offset + 1, getValue());
109      }
110  
111      public int getSize()
112      {
113          return SIZE;
114      }
115  
116      public String toFormulaString(SheetReferences refs)
117      {
118          return "" + getValue();
119      }
120         public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;}
121  
122      public Object clone() {
123        NumberPtg ptg = new NumberPtg();
124        ptg.field_1_value = field_1_value;
125        return ptg;
126      }
127  }
128  
129