mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-25 21:38:56 +00:00
0c9c2dd669
Cf. <https://github.com/php/doc-en/pull/289>. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@352191 c90b9560-bf6c-de11-be94-00142212c4b1
74 lines
1.9 KiB
XML
74 lines
1.9 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!-- $Revision$ -->
|
|
<refentry xml:id="function.atan" xmlns="http://docbook.org/ns/docbook">
|
|
<refnamediv>
|
|
<refname>atan</refname>
|
|
<refpurpose>Arc tangent</refpurpose>
|
|
</refnamediv>
|
|
<refsect1 role="description">
|
|
&reftitle.description;
|
|
<methodsynopsis>
|
|
<type>float</type><methodname>atan</methodname>
|
|
<methodparam><type>float</type><parameter>num</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<para>
|
|
Returns the arc tangent of <parameter>num</parameter> in radians.
|
|
<function>atan</function> is the inverse function of
|
|
<function>tan</function>, which means that
|
|
<literal>a==tan(atan(a))</literal> for every value of a that is within
|
|
<function>atan</function>'s range.
|
|
</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 arc tangent of <parameter>num</parameter> in radians.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 role="seealso">
|
|
&reftitle.seealso;
|
|
<para>
|
|
<simplelist>
|
|
<member><function>tan</function></member>
|
|
<member><function>atanh</function></member>
|
|
<member><function>asin</function></member>
|
|
<member><function>acos</function></member>
|
|
</simplelist>
|
|
</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:"~/.phpdoc/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
|
|
-->
|