quot;</span><span class="p">);</span>
<span class="n">ud</span><span class="p">.</span><span class="n">def</span><span class="p">(</span><span class="s">&quot;__call__&quot;</span><span class="p">,</span> <span class="n">np</span><span class="o">::</span><span class="n">binary_ufunc</span><span class="o">&lt;</span><span class="n">BinarySquare</span><span class="o">&gt;::</span><span class="n">make</span><span class="p">());</span>
</pre></div>
</div>
<p>And initialise ud</p>
<div class="highlight-c++"><div