I believe that code like the following:
std::ofstream ofs("val.bin");
boost::archive::binary_oarchive oa(ofs,std::ios::binary);
oa<< f ;
should be changed to:
std::ofstream ofs("val.bin", std::ios::binary);
boost::archive::binary_oarchive oa(ofs);
oa<< f ;
Robert Ramey
"Stephane Martineau" wrote in message news:002b01c5973f$ec8fad60$234c8189@ICDI6...
Hye,
this little program fail in serialization of a float with binary archive but success with xml or text archive ??
as i am not an expert, i have now idea why ???
i have the save problem with double and like with float, only depending of the value ....
it fails under windows XP, VC++7.1 but success under Linux + gcc
thanks for helping ,
Stéphane.
// problemeserialisation.cpp
//
#include <iostream>
#include <fstream>
#include
#include
#include
#include
#include
#include
void test_binary (float & f)
{
using namespace std ;
std::ofstream ofs("val.bin");
boost::archive::binary_oarchive oa(ofs,std::ios::binary);
oa<< f ;
ofs.close();
std::cout << "Valeur serialisee binary " << f << std::endl ;
std::ifstream ifs("val.bin");
boost::archive::binary_iarchive ia(ifs,std::ios::binary);
float f1;
ia >> f1;
if (ifs.fail())
{
cout << "badbit " << ( ifs.rdstate( ) & ios::badbit ) << endl;
cout << "failbit " << ( ifs.rdstate( ) & ios::failbit ) << endl;
cout << "eofbit " << ( ifs.rdstate( ) & ios::eofbit ) << endl;
}
std::cout << "Valeur deserialisee binary "<< f1 << std::endl ;
ifs.close();
return ;
}
void test_text (float & f)
{
std::ofstream ofs("val.txt");
boost::archive::text_oarchive oa(ofs);
oa << f ;
ofs.close();
std::cout << "Valeur serialisee Texte " << f << std::endl ;
std::ifstream ifs("val.txt");
boost::archive::text_iarchive ia(ifs);
float f2 ;
ia >> f2;
std::cout << "Valeur deserialisee Texte "<< f2 << std::endl ;
ifs.close();
return ;
}
void test_xml (float & f)
{
std::ofstream ofs("val.xml");
boost::archive::xml_oarchive oa(ofs);
oa << BOOST_SERIALIZATION_NVP(f) ;
ofs.close();
std::cout << "Valeur serialisee Xml " << f << std::endl ;
std::ifstream ifs("val.xml");
boost::archive::xml_iarchive ia(ifs);
float f2 ;
ia >> BOOST_SERIALIZATION_NVP(f2);
std::cout << "Valeur deserialisee Xml "<< f2 << std::endl ;
ifs.close();
return ;
}
int main (int argc, const char * argv[])
{
float f1 = (float)2.411667 ;
test_text(f1);
test_xml(f1);
test_binary(f1);
return 0;
}
output :
Valeur serialisee Texte 2.41167
Valeur deserialisee Texte 2.41167
Valeur serialisee Xml 2.41167
Valeur deserialisee Xml 2.41167
Valeur serialisee binary 2.41167
badbit 0
failbit 2
eofbit 1
Valeur deserialisee binary -1.07137e+008
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