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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.fdiv" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>fdiv</refname>
<refpurpose>Divides two numbers, according to IEEE 754</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>float</type><methodname>fdiv</methodname>
<methodparam><type>float</type><parameter>num1</parameter></methodparam>
<methodparam><type>float</type><parameter>num2</parameter></methodparam>
</methodsynopsis>
<para>
Returns the floating point result of dividing the
<parameter>num1</parameter> by the <parameter>num2</parameter>.
If the <parameter>num2</parameter> is zero, then one of <constant>INF</constant>,
-<constant>INF</constant>, or <constant>NAN</constant> will be returned.
</para>
<para>
Note that in comparisons, <constant>NAN</constant> will never be equal (<code>==</code>) or identical (<code>===</code>) to
any value, including itself.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>num1</parameter></term>
<listitem>
<para>
The dividend (numerator)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>num2</parameter></term>
<listitem>
<para>
The divisor
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
The floating point result of
<parameter>num1</parameter>/<parameter>num2</parameter>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Using <function>fdiv</function></title>
<programlisting role="php">
<![CDATA[
<?php
var_dump(fdiv(5.7, 1.3)); // float(4.384615384615385)
var_dump(fdiv(4, 2)); // float(2)
var_dump(fdiv(1.0, 0.0)); // float(INF)
var_dump(fdiv(-1.0, 0.0)); // float(-INF)
var_dump(fdiv(0.0, 0.0)); // float(NAN)
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member>
Division operator
<link linkend="language.operators.arithmetic"><literal>/</literal></link>
</member>
<member><function>intdiv</function> - Integer division</member>
<member><function>fmod</function></member>
<member><function>fpow</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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