PLearn 0.1
lexical_cast.h
Go to the documentation of this file.
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 :
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines