text: ///////////////////////////////////////////////////////////////
  //  Copyright 2012 John Maddock. Distributed under the Boost
  //  Software License, Version 1.0. (See accompanying file
  //  LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
  
  #include <boost/multiprecision/gmp.hpp>
  
  using namespace boost::multiprecision;
  
  int main()
  {
     mpf_float    a;
     mpz_int      b;
     mpq_rational c;
  }
  