assertThat(reverse).isNotNull();
  }

  public void testBuilderAsymptotics() {
    int[] compares = {0};
    Comparator<Integer> countingComparator =
        (i, j) -> {
          compares[0]++;
          return i.compareTo(j);
        };
    ImmutableSortedSet.Builder<Integer> builder =

    Comparator<byte[]> comparator2 = UnsignedBytes.lexicographicalComparatorJavaImpl();

    /*
     * These arrays are set up to test that the comparator compares bytes within a word in the
     * correct order—in order words, that it doesn't mix up big-endian and little-endian. The first
     * array has a smaller element at one index, and then the second array has a smaller element at

      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work

    Comparator<byte[]> comparator2 = UnsignedBytes.lexicographicalComparatorJavaImpl();

    /*
     * These arrays are set up to test that the comparator compares bytes within a word in the
     * correct order—in order words, that it doesn't mix up big-endian and little-endian. The first
     * array has a smaller element at one index, and then the second array has a smaller element at

      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work

      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work

      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work

      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work

reproduction, or distribution of Your modifications, or for any such 
Derivative Works as a whole, provided Your use, reproduction, and 
distribution of the Work otherwise complies with the conditions stated in 
this License. 

5. Submission of Contributions. Unless You explicitly state otherwise, any 
Contribution intentionally submitted for inclusion in the Work by You to the 

func (z *Int) Abs(x *Int) *Int {
	x.doinit()
	z.doinit()
	C.mpz_abs(&z.i[0], &x.i[0])
	return z
}

/*
 * functions without a clear receiver
 */

// CmpInt compares x and y. The result is
//
//	-1 if x <  y
//	 0 if x == y
//	+1 if x >  y
func CmpInt(x, y *Int) int {
	x.doinit()
	y.doinit()
	switch cmp := C.mpz_cmp(&x.i[0], &y.i[0]); {
	case cmp < 0: