assertEquals(
        /* expected= */ LongMath.sqrt(Long.MAX_VALUE, FLOOR),
        /* actual= */ LongMath.FLOOR_SQRT_MAX_LONG);
  }

  @GwtIncompatible // TODO
  public void testConstantsFactorials() {
    long expected = 1;
    for (int i = 0; i < LongMath.factorials.length; i++, expected *= i) {
      assertEquals(expected, LongMath.factorials[i]);
    }
    assertThrows(