00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * Copyright (c) 2001 The Apache Software Foundation. All rights 00005 * reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * 1. Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * 00014 * 2. Redistributions in binary form must reproduce the above copyright 00015 * notice, this list of conditions and the following disclaimer in 00016 * the documentation and/or other materials provided with the 00017 * distribution. 00018 * 00019 * 3. The end-user documentation included with the redistribution, 00020 * if any, must include the following acknowledgment: 00021 * "This product includes software developed by the 00022 * Apache Software Foundation (http://www.apache.org/)." 00023 * Alternately, this acknowledgment may appear in the software itself, 00024 * if and wherever such third-party acknowledgments normally appear. 00025 * 00026 * 4. The names "Xerces" and "Apache Software Foundation" must 00027 * not be used to endorse or promote products derived from this 00028 * software without prior written permission. For written 00029 * permission, please contact apache\@apache.org. 00030 * 00031 * 5. Products derived from this software may not be called "Apache", 00032 * nor may "Apache" appear in their name, without prior written 00033 * permission of the Apache Software Foundation. 00034 * 00035 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 00036 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00037 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00038 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 00039 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00040 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00041 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 00042 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00043 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00044 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 00045 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00046 * SUCH DAMAGE. 00047 * ==================================================================== 00048 * 00049 * This software consists of voluntary contributions made by many 00050 * individuals on behalf of the Apache Software Foundation, and was 00051 * originally based on software copyright (c) 2001, International 00052 * Business Machines, Inc., http://www.ibm.com . For more information 00053 * on the Apache Software Foundation, please see 00054 * <http://www.apache.org/>. 00055 */ 00056 00057 /* 00058 * $Id: XMLAbstractDoubleFloat.hpp,v 1.1 2002/05/11 21:16:44 bhavani Exp $ 00059 * $Log: XMLAbstractDoubleFloat.hpp,v $ 00060 * Revision 1.1 2002/05/11 21:16:44 bhavani 00061 * CR#CR062582# adding xercesc 1.7 file 00062 * 00063 * Revision 1.4 2002/03/06 19:13:12 peiyongz 00064 * Patch: more valid lexcial representation for positive/negative zero 00065 * 00066 * Revision 1.3 2002/03/01 18:47:37 peiyongz 00067 * fix: more valid lexcial representation forms for "neural zero" 00068 * 00069 * Revision 1.2 2002/02/20 18:17:02 tng 00070 * [Bug 5977] Warnings on generating apiDocs. 00071 * 00072 * Revision 1.1.1.1 2002/02/01 22:22:14 peiyongz 00073 * sane_include 00074 * 00075 * Revision 1.4 2001/11/28 15:39:26 peiyongz 00076 * return Type& for operator= 00077 * 00078 * Revision 1.3 2001/11/22 21:39:00 peiyongz 00079 * Allow "0.0" to be a valid lexcial representation of ZERO. 00080 * 00081 * Revision 1.2 2001/11/22 20:23:00 peiyongz 00082 * _declspec(dllimport) and inline warning C4273 00083 * 00084 * Revision 1.1 2001/11/19 21:33:42 peiyongz 00085 * Reorganization: Double/Float 00086 * 00087 * 00088 */ 00089 00090 #ifndef XML_ABSTRACT_DOUBLE_FLOAT_HPP 00091 #define XML_ABSTRACT_DOUBLE_FLOAT_HPP 00092 00093 #include <xercesc/util/XercesDefs.hpp> 00094 #include <xercesc/util/XMLNumber.hpp> 00095 #include <xercesc/util/XMLBigDecimal.hpp> 00096 00097 /*** 00098 * 3.2.5.1 Lexical representation 00099 * 00100 * double values have a lexical representation consisting of a mantissa followed, 00101 * optionally, by the character "E" or "e", followed by an exponent. 00102 * 00103 * The exponent ·must· be an integer. 00104 * The mantissa must be a decimal number. 00105 * The representations for exponent and mantissa must follow the lexical rules 00106 * for integer and decimal. 00107 * 00108 * If the "E" or "e" and the following exponent are omitted, 00109 * an exponent value of 0 is assumed. 00110 ***/ 00111 00112 /*** 00113 * 3.2.4.1 Lexical representation 00114 * 00115 * float values have a lexical representation consisting of a mantissa followed, 00116 * optionally, by the character "E" or "e", followed by an exponent. 00117 * 00118 * The exponent ·must· be an integer. 00119 * The mantissa must be a decimal number. 00120 * The representations for exponent and mantissa must follow the lexical rules 00121 * for integer and decimal. 00122 * 00123 * If the "E" or "e" and the following exponent are omitted, 00124 * an exponent value of 0 is assumed. 00125 ***/ 00126 00127 class XMLUTIL_EXPORT XMLAbstractDoubleFloat : public XMLNumber 00128 { 00129 public: 00130 00131 enum LiteralType 00132 { 00133 NegINF, 00134 NegZero, 00135 PosZero, 00136 PosINF, 00137 NaN, 00138 SpecialTypeNum, 00139 Normal 00140 }; 00141 00142 virtual ~XMLAbstractDoubleFloat(); 00143 00144 virtual XMLCh* toString() const; 00145 00146 virtual int getSign() const; 00147 00148 protected: 00149 00150 // 00151 // To be used by derived class exclusively 00152 // 00153 XMLAbstractDoubleFloat(); 00154 00155 void init(const XMLCh* const strValue); 00156 00169 static int compareValues(const XMLAbstractDoubleFloat* const lValue 00170 , const XMLAbstractDoubleFloat* const rValue); 00171 00172 // 00173 // to be overwritten by derived class 00174 // 00175 virtual void checkBoundary(const XMLCh* const strValue) = 0; 00176 00177 private: 00178 // 00179 // Unimplemented 00180 // 00181 // copy ctor 00182 // assignment ctor 00183 // 00184 XMLAbstractDoubleFloat(const XMLAbstractDoubleFloat& toCopy); 00185 XMLAbstractDoubleFloat& operator=(const XMLAbstractDoubleFloat& toAssign); 00186 00187 void normalizeZero(XMLCh* const); 00188 00189 inline bool isSpecialValue() const; 00190 00191 static int compareSpecial(const XMLAbstractDoubleFloat* const specialValue 00192 , const XMLAbstractDoubleFloat* const normalValue); 00193 00194 // ----------------------------------------------------------------------- 00195 // Private data members 00196 // 00197 // fMantissa 00198 // the XMLBigDecimal holding the value of mantissa. 00199 // 00200 // fExponent 00201 // the XMLBigInteger holding the value of exponent. 00202 // 00203 // fType 00204 // the type of the object. 00205 // 00206 // ----------------------------------------------------------------------- 00207 00208 XMLBigDecimal* fMantissa; 00209 XMLBigInteger* fExponent; 00210 LiteralType fType; 00211 }; 00212 00213 inline bool XMLAbstractDoubleFloat::isSpecialValue() const 00214 { 00215 return (fType < SpecialTypeNum); 00216 } 00217 00218 #endif