Hi all,

Shouldn't it be possible to convert max double value to string and then back to double? In this example, std::
istringstream fails to do that (works in Linux):

#include <iostream>
#include <sstream>
#include <limits>
#include <string>
#include <cfloat>

const double d = std::numeric_limits<double>::max();

int main()
{
    std::cout << "double max: " << d << "\n";
    std::string tst = std::to_string(d);
    std::cout << "std::to_string: " << tst << "\n";

    std::istringstream ss(tst);
    double result;
    ss >> result;
    
    if (ss.fail()) {
	std::cout << "Failed to convert back to double.\n";
    return 1;
    } else {
	std::cout << "Conversion OK.\n";
    }
    return 0;
}

Compiled with:
QCC  -V5.4.0,gcc_ntox86_64_gpp -g -Wall -Wextra -std=c++14 float1.cpp -o float1