<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<!-- splitted from ./en/functions/math.xml, last change in rev 1.2 -->
  <refentry id="function.acosh">
   <refnamediv>
    <refname>acosh</refname>
    <refpurpose>Inverse hyperbolic cosine</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>float</type><methodname>acosh</methodname>
      <methodparam><type>float</type><parameter>arg</parameter></methodparam>
     </methodsynopsis>
    <para>
     Returns the inverse hyperbolic cosine of
     <parameter>arg</parameter>, i.e. the value whose
     hyperbolic cosine is <parameter>arg</parameter>.
    </para>
    &note.no-windows;
    <para>
     See also:
     <function>acos</function>,
     <function>asinh</function>, and
     <function>atanh</function>.
    </para>
   </refsect1>
  </refentry>

<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"../../../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->