assertEquals(
        /* expected= */ IntMath.sqrt(Integer.MAX_VALUE, FLOOR),
        /* actual= */ IntMath.FLOOR_SQRT_MAX_INT);
  }

  @AndroidIncompatible // presumably slow
  public void testLessThanBranchFree() {
    for (int x : ALL_INTEGER_CANDIDATES) {
      for (int y : ALL_INTEGER_CANDIDATES) {
        if (LongMath.fitsInInt((long) x - y)) {
          int expected = (x < y) ? 1 : 0;

      }
    }
    int k = LongMath.biggestSimpleBinomials.length;
    assertThrows(ArithmeticException.class, () -> simpleBinomial(2 * k, k));
  }

  @AndroidIncompatible // slow
  public void testLessThanBranchFree() {
    for (long x : ALL_LONG_CANDIDATES) {
      for (long y : ALL_LONG_CANDIDATES) {
        BigInteger difference = BigInteger.valueOf(x).subtract(BigInteger.valueOf(y));
        if (fitsInLong(difference)) {