void print(const vector_type& vec, const std::string& str) { std::ofstream of(str); of << std::showpos; using limit_type = std::numeric_limits<typename vector_type::value_type>; of << std::scientific; of << std::setprecision(limit_type::max_digits10); for(int i = 0 ; i < vec.extent<0>(); ++i) { of << vec.at(i) << std::endl; } }