routput"><span class="keyword">double</span></code> when T is an integer type, and T otherwise.
      </p>
<p>
        <span class="inlinemediaobject"><img src="../../../graphs/atanh.svg" align="middle"></span>
      </p>
<h5>
<a name="math_toolkit.inv_hyper.atanh.h0"></a>
        <span class="phrase"><a name="math_toolkit.inv_hyper.atanh.accuracy"></a></span><a class="link" href="atanh.html#math_toolkit.inv_hyper.atanh.accuracy">Accuracy</a>
      </h5>
<p>
        Generally accuracy is to within 1 or 2 ep