Random rand = new Random(1);
    for (int i = 0; i < 1000; i++) {
      int n = rand.nextInt(Integer.MAX_VALUE);
      assertEquals(LongMath.isPrime(n), IntMath.isPrime(n));
    }
  }

  public void testSaturatedAbs() {
    assertEquals(Integer.MAX_VALUE, IntMath.saturatedAbs(Integer.MIN_VALUE));
    assertEquals(Integer.MAX_VALUE, IntMath.saturatedAbs(Integer.MAX_VALUE));