     1         2         3         4         5         6         7         8 
#&gt;     FALSE     FALSE     FALSE     FALSE     FALSE     FALSE     FALSE     FALSE 
#&gt;            99999993  99999994  99999995  99999996  99999997  99999998  99999999 
#&gt;        ..     FALSE     FALSE     FALSE     FALSE     FALSE     FALSE     FALSE 
#&gt; 100000000 
#&gt;     FALSE
</code></pre>

<p>fast boolean operations</p>

<pre><code class="r">b1 &amp; b2
#&gt; bit length=100000000 occupying only 3125000 int32
#&gt