PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // lexical_cast.h 00004 // 00005 // Copyright (C) 2005 Christian Dorion 00006 // Copyright (C) 2006 University of Montreal 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions 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 the 00016 // documentation and/or other materials provided with the distribution. 00017 // 00018 // 3. The name of the authors may not be used to endorse or promote 00019 // products derived from this software without specific prior written 00020 // permission. 00021 // 00022 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00023 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00025 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00027 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 // This file is part of the PLearn library. For more information on the PLearn 00034 // library, go to the PLearn Web site at www.plearn.org 00035 00036 /* ******************************************************* 00037 * $Id: lexical_cast.h 8149 2007-10-04 17:19:42Z tihocan $ 00038 ******************************************************* */ 00039 00040 // Authors: Christian Dorion 00041 00045 #ifndef lexical_cast_INC 00046 #define lexical_cast_INC 00047 00048 // Put includes here 00049 #include <string> 00050 #include <plearn/io/openString.h> 00051 00052 namespace PLearn { 00053 using namespace std; 00054 00060 double pl_strtod(const char* nptr, char** endptr); 00061 float pl_strtof(const char* nptr, char** endptr); 00062 00066 bool pl_isnumber(const string& s, double* dbl=NULL); 00067 bool pl_isnumber(const string& s, float* dbl); 00068 00069 // Return true if the number can be converted to a long 00070 bool pl_islong(const string& s); 00071 00073 long tolong (const string& s, int base=10); 00074 double todouble (const string& s); 00075 bool tobool (const string& s); 00076 00077 00078 inline float tofloat (const string& s) 00079 { 00080 return float(todouble(s)); 00081 } 00082 00083 inline int toint (const string& s, int base=10) 00084 { 00085 return int(tolong(s,base)); 00086 } 00087 00088 #if defined(USEFLOAT) 00089 inline float toreal (const string& s) 00090 { 00091 return tofloat(s); 00092 } 00093 00094 #elif defined(USEDOUBLE) 00095 inline double toreal (const string& s) 00096 { 00097 return todouble(s); 00098 } 00099 #endif 00100 00101 00115 template <class T> 00116 T lexical_cast(const string& str) 00117 { 00118 PStream in = openString(str, PStream::plearn_ascii); 00119 T obj; 00120 in >> obj; 00121 return obj; 00122 } 00123 00124 00125 } // end of namespace PLearn 00126 00127 #endif 00128 00129 00130 /* 00131 Local Variables: 00132 mode:c++ 00133 c-basic-offset:4 00134 c-file-style:"stroustrup" 00135 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00136 indent-tabs-mode:nil 00137 fill-column:79 00138 End: 00139 */ 00140 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :