message: ADL-export round()
diff: @@ -38,6 +38,7 @@ using ::log2;
  using ::log10;
  using ::log1p;
  using ::pow;
  +using ::round;
  using ::sin;
  using ::sqrt;
  using ::tan;
  @@ -59,6 +60,7 @@ using std::log2;
  using std::log10;
  using std::log1p;
  using std::pow;
  +using std::round;
  using std::sin;
  using std::sqrt;
  using std::tan;
  