title: Numpy gcd function
body: <p>Does <code>numpy</code> have a <code>gcd</code> function somewhere in its structure of modules?</p>
  
  <p>I'm aware of <code>fractions.gcd</code> but thought a <code>numpy</code> equivalent maybe potentially quicker and work better with <code>numpy</code> datatypes.</p>
  
  <p>I have been unable to uncover anything on google other than this <a href="http://mail.scipy.org/pipermail/numpy-discussion/2010-June/050833.html" rel="noreferrer">link</a> which seems out of date and I don't know how I would access the <code>_gcd</code> function it suggests exists.</p>
  
  <p>Naively trying:</p>
  
  <pre><code>np.gcd
  np.euclid
  </code></pre>
  
  <p>hasn't worked for me...</p>