}

  public void testLog2SemiMonotonic() {
    for (double d : POSITIVE_FINITE_DOUBLE_CANDIDATES) {
      assertTrue(DoubleMath.log2(d + 0.01) >= DoubleMath.log2(d));
    }
  }

  public void testLog2Negative() {
    for (double d : POSITIVE_FINITE_DOUBLE_CANDIDATES) {
      assertTrue(Double.isNaN(DoubleMath.log2(-d)));
    }
  }

  public void testLog2Zero() {