an>
<span class="sd">        returned to the user.</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dtype</span> <span class="o">!=</span> <span class="s2">&quot;float64&quot;</span><span class="p">:</span>
            <span class="nb">input</span> <span class="o">=</span> <span class="nb">input</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="bp">self