text: #include "../../include/core_language/hexfloat.hpp"
  #include <iostream> // std::cout
  
  // paper: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0245r1.html
  
  namespace cpp17
  {
  namespace core_language
  {
  void hexfloatDemo()
  {
      const double d{ 0x1ffp10 };
  
      std::cout << "d: " << d;
  }
  } // namespace core_language
  } // namespace cpp17
  