Boost::propertytree DBL_MAX

Annah.Do

I'm programming a ptree and at some point I need to put DBL_MAX in (as a default value). I see the right number when I open the generated xml-file.

But when I use ptree.get to get the number an exception is thrown:conversion of data to type "d" failed.

Is there a way to get the number from the property tree?
can anybody help me with that?

#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
#include "float.h"
using namespace std;

int main()
{
    using boost::property_tree::ptree;
    ptree pt;

    double d=-DBL_MAX;
    double d2=-1.797693134862316e+308;
    double d3=-1.79769e+308;
    cout<<d<<endl;
    cout<<d2<<endl;
    cout<<d3<<endl;
    pt.put<double>("double", d);
    write_xml("test.xml", pt);
    cout << "from xml-file: " <<pt.get<double>("double")<<endl;//doesn't work with d and d2, but works with d3
}