upstream-man-pages/manglsl/cosh.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
   3               "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
   4 <refentry id="cosh">
   5     <refmeta>
   6         <refmetainfo>
   7             <copyright>
   8                 <year>2011</year>
   9                 <holder>Khronos Group</holder>
  10             </copyright>
  11         </refmetainfo>
  12         <refentrytitle>cosh</refentrytitle>
  13         <manvolnum>3G</manvolnum>
  14     </refmeta>
  15     <refnamediv>
  16         <refname>cosh</refname>
  17         <refpurpose>return the hyperbolic cosine of the parameter</refpurpose>
  18     </refnamediv>
  19     <refsynopsisdiv><title>Declaration</title>
  20         <funcsynopsis>
  21             <funcprototype>
  22                 <funcdef>genType <function>cosh</function></funcdef>
  23                 <paramdef>genType <parameter>x</parameter></paramdef>
  24             </funcprototype>
  25         </funcsynopsis>
  26     </refsynopsisdiv>
  27     <refsect1 id="parameters"><title>Parameters</title>
  28         <variablelist>
  29         <varlistentry>
  30             <term><parameter>x</parameter></term>
  31             <listitem>
  32                 <para>
  33                     Specify the value whose hyperbolic cosine to return.
  34                 </para>
  35             </listitem>
  36         </varlistentry>
  37         </variablelist>
  38     </refsect1>
  39     <refsect1 id="description"><title>Description</title>
  40         <para>
  41             <function>cosh</function> returns the hyperbolic cosine of
  42             <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>.
  43             The hyperbolic cosine of <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
  44             is computed as
  45             <inlineequation><mml:math>
  46               <mml:mrow>
  47                 <mml:mfrac>
  48                   <mml:mrow>
  49                     <mml:msup>
  50                       <mml:mi>e</mml:mi>
  51                       <mml:mi>x</mml:mi>
  52                     </mml:msup>
  53                     <mml:mo>&plus;</mml:mo>
  54                     <mml:msup>
  55                       <mml:mi>e</mml:mi>
  56                       <mml:mrow>
  57                         <mml:mo>&minus;</mml:mo>
  58                         <mml:mi>x</mml:mi>
  59                       </mml:mrow>
  60                     </mml:msup>
  61                   </mml:mrow>
  62                   <mml:mn>2</mml:mn>
  63                 </mml:mfrac>
  64               </mml:mrow>
  65             </mml:math></inlineequation>.
  66         </para>
  67     </refsect1>
  68     <refsect1 id="versions"><title>Version Support</title>
  69         <informaltable frame="topbot">
  70             #VARTABLECOLS#
  71                 <thead>
  72                     #FUNCTABLEHEADER#
  73                     <row>
  74                         <entry>cosh</entry>#newin13#
  75                     </row>
  76                 </thead>
  77             </tgroup>
  78         </informaltable>
  79     </refsect1>
  80     <refsect1 id="seealso"><title>See Also</title>
  81         <para>
  82             <citerefentry><refentrytitle>sin</refentrytitle></citerefentry>,
  83             <citerefentry><refentrytitle>cos</refentrytitle></citerefentry>,
  84             <citerefentry><refentrytitle>sinh</refentrytitle></citerefentry>
  85         </para>
  86     </refsect1>
  87     <refsect1 id="Copyright"><title>Copyright</title>
  88         <para>
  89             Copyright <trademark class="copyright"></trademark> 2011 Khronos Group.
  90             This material may be distributed subject to the terms and conditions set forth in
  91             the Open Publication License, v 1.0, 8 June 1999.
  92             <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
  93         </para>
  94     </refsect1>
  95 </refentry>