export namespace std {
using std::fenv_t _LIBCPP_USING_IF_EXISTS;
using std::fexcept_t _LIBCPP_USING_IF_EXISTS;
using std::feclearexcept _LIBCPP_USING_IF_EXISTS;
using std::fegetexceptflag _LIBCPP_USING_IF_EXISTS;
using std::feraiseexcept _LIBCPP_USING_IF_EXISTS;
using std::fesetexceptflag _LIBCPP_USING_IF_EXISTS;
using std::fetestexcept _LIBCPP_USING_IF_EXISTS;
using std::fegetround _LIBCPP_USING_IF_EXISTS;
using std::fesetround _LIBCPP_USING_IF_EXISTS;
using std::fegetenv _LIBCPP_USING_IF_EXISTS;
using std::feholdexcept _LIBCPP_USING_IF_EXISTS;
using std::fesetenv _LIBCPP_USING_IF_EXISTS;
using std::feupdateenv _LIBCPP_USING_IF_EXISTS;
}