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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<!-- splitted from ./en/functions/gmp.xml, last change in rev 1.1 -->
<refentry id="function.gmp-perfect-square">
<refnamediv>
<refname>gmp_perfect_square</refname>
<refpurpose>Perfect square check</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>bool</type><methodname>gmp_perfect_square</methodname>
<methodparam><type>resource</type><parameter>a</parameter></methodparam>
</methodsynopsis>
<para>
Returns &true; if <parameter>a</parameter> is a perfect square,
&false; otherwise.
</para>
<example>
<title><function>gmp_perfect_square</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// 3 * 3, perfect square
var_dump(gmp_perfect_square("9"));
// not a perfect square
var_dump(gmp_perfect_square("7"));
// 1234567890 * 1234567890, perfect square
var_dump(gmp_perfect_square("1524157875019052100"));
?>
]]>
</programlisting>
<para>
The printout of the above program will be:
</para>
<screen>
<![CDATA[
bool(true)
bool(false)
bool(true)
]]>
</screen>
</example>
<para>
See also: <function>gmp_sqrt</function>,
<function>gmp_sqrtrem</function>.
</para>
</refsect1>
</refentry>
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vim: et tw=78 syn=sgml
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-->
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