php-doc-en/reference/math/functions/cosh.xml
2020-12-26 19:26:31 +00:00

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XML

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.cosh" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>cosh</refname>
<refpurpose>Hyperbolic cosine</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>float</type><methodname>cosh</methodname>
<methodparam><type>float</type><parameter>num</parameter></methodparam>
</methodsynopsis>
<para>
Returns the hyperbolic cosine of <parameter>num</parameter>,
defined as <literal>(exp(arg) + exp(-arg))/2</literal>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>num</parameter></term>
<listitem>
<para>
The argument to process
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
The hyperbolic cosine of <parameter>num</parameter>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>cos</function></member>
<member><function>acosh</function></member>
<member><function>sinh</function></member>
<member><function>tanh</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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