*       <li>{@code x} is not a mathematical integer and {@code mode} is {@link
   *           RoundingMode#UNNECESSARY}
   *     </ul>
   */
  @GwtIncompatible // #roundIntermediate
  public static int roundToInt(double x, RoundingMode mode) {
    double z = roundIntermediate(x, mode);
    checkInRangeForRoundingInputs(
        z > MIN_INT_AS_DOUBLE - 1.0 & z < MAX_INT_AS_DOUBLE + 1.0, x, mode);
    return (int) z;
  }