I think I've found a bug in the boost::lexical_cast<>
library (v1.31.0) on WinXP SP1, MSVC 6.0 (sp5) and
MSVC.NET 2003.
--- Start code snippet ---
#include
#include <iostream>
int main( int argc, char* argv[] )
{
double dMax = = std::numeric_limits< double >::max();
// On a Win32 x86 system, dMax is now 1.7976931348623157e+308
// This is successful and strMax is "1.797693134862316e+308"
std::string strMax = boost::lexical_cast< std::string >( dMax );
try
{
double newDMax = boost::lexical_cast< double >( strMax );
std::cout << "Successfuly" << std::endl;
}
catch ( boost::bad_lexical_cast& )
{
std::cout << "Failed to cast" << std::endl;
}
// On a Win32 x86 system, this always fails,
// because (I think) strMax overflows a double,
// because 1.7976931348623157e+308 is *rounded UP*
// to 1.797693134862316e+308, which cannot be
// represented by a double
}
--- End code snippet ---
-----------------------------------------------------
Leon Raj
Senior Engineer
Invetech Pty. Ltd.
Phone: +61 3 9211 7000 (Switchboard)
+61 3 9211 7938 (DDI)
leon.raj@invetech.com.au
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