1 /* ==================================================================== 2 * The Apache Software License, Version 1.1 3 * 4 * Copyright (c) 2002 The Apache Software Foundation. All rights 5 * reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 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 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * 3. The end-user documentation included with the redistribution, 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. 25 * 26 * 4. The names "Apache" and "Apache Software Foundation" and 27 * "Apache POI" must not be used to endorse or promote products 28 * derived from this software without prior written permission. For 29 * written permission, please contact apache@apache.org. 30 * 31 * 5. Products derived from this software may not be called "Apache", 32 * "Apache POI", nor may "Apache" appear in their name, without 33 * prior written permission of the Apache Software Foundation. 34 * 35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 46 * SUCH DAMAGE. 47 * ==================================================================== 48 * 49 * This software consists of voluntary contributions made by many 50 * individuals on behalf of the Apache Software Foundation. For more 51 * information on the Apache Software Foundation, please see 52 * <http://www.apache.org/>. 53 */ 54 55 package org.apache.poi.hssf.record.formula; 56 57 import org.apache.poi.util.LittleEndian; 58 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 */ 65 66 public class NumberPtg 67 extends Ptg 68 { 69 public final static int SIZE = 9; 70 public final static byte sid = 0x1f; 71 private double field_1_value; 72 73 74 /** Create a NumberPtg from a byte array read from disk */ 75 public NumberPtg(byte [] data, int offset) 76 { 77 setValue(LittleEndian.getDouble(data, offset + 1)); 78 } 79 80 /** Create a NumberPtg from a string representation of the number 81 * Number format is not checked, it is expected to be validated in the parser 82 * that calls this method. 83 * @param value : String representation of a floating point number 84 */ 85 protected NumberPtg(String value) { 86 setValue(Double.parseDouble(value)); 87 } 88 89 90 public void setValue(double value) 91 { 92 field_1_value = value; 93 } 94 95 96 public double getValue() 97 { 98 return field_1_value; 99 } 100 101 public void writeBytes(byte [] array, int offset) 102 { 103 array[ offset + 0 ] = sid; 104 LittleEndian.putDouble(array, offset + 1, getValue()); 105 } 106 107 public int getSize() 108 { 109 return SIZE; 110 } 111 112 public String toFormulaString() 113 { 114 return "" + getValue(); 115 } 116 public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;} 117 } 118 119