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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) 2009 - DIGITEO - Vincent COUVERT
 *
 * This file must be used under the terms of the CeCILL.
 * This source file is licensed as described in the file COPYING, which
 * you should have received as part of this distribution.  The terms
 * are also available at
 * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
 *
 -->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:id="acoth">
  <refnamediv>
    <refname>acoth</refname>
    <refpurpose>(Matlab function) Inverse hyperbolic cotangent</refpurpose>
  </refnamediv>
  <refsection>
    <title>Matlab/Scilab equivalent</title>
    <para>
      <informaltable border="1" pgwide="1">
        <tr>
          <td align="center">
            <emphasis role="bold">Matlab</emphasis>
          </td>
          <td align="center">
            <emphasis role="bold">Scilab</emphasis>
          </td>
        </tr>
        <tr>
          <td>
            <programlisting role="example"><![CDATA[
acoth(A)
]]></programlisting>
          </td>
          <td>
            <programlisting role="example"><![CDATA[
atanh(1 ./A)
]]></programlisting>
          </td>
        </tr>
      </informaltable>
    </para>
  </refsection>
  <refsection>
    <title>Particular cases</title>
    <para>In Matlab <emphasis role="bold">y=acoth(x)</emphasis> and Scilab <emphasis role="bold">y=atanh(1 ./x)</emphasis>, for real elements of <emphasis role="bold">x</emphasis> outside the domain <emphasis role="bold">[-1,1]</emphasis>, the complex part of Scilab <emphasis role="bold">y</emphasis> value is the opposite of Matlab <emphasis role="bold">y</emphasis> value. See <emphasis role="bold">atanh</emphasis>/.</para>
  </refsection>
</refentry>