title: Python numpy uint64 gets converted to float on division
body: <p>I wanted to do a simple integer division e.g. <code>1/3=0</code>, but <code>uint64</code> behaves very weirdly, resulting in my result being casted to float. Why?</p>
  
  <pre><code>python&gt; uint64(100)/3
  Out[0]: 33.333333333333336
  python&gt; uint64(100)/uint64(3)
  Out[1]: 33
  python&gt; int64(100)/3
  Out[2]: 33
  python&gt; int64(100)/uint64(3)
  Out[3]: 33.333333333333336
  python&gt; int32(100)/int64(3)
  Out[4]: 33
  </code></pre>