<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id='function.is-finite' xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>is_finite</refname>
  <refpurpose>Finds whether a value is a legal finite number</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
   <methodsynopsis>
    <type>bool</type><methodname>is_finite</methodname>
    <methodparam><type>float</type><parameter>val</parameter></methodparam>
   </methodsynopsis>
  <para>
   Checks whether <parameter>val</parameter> is a legal finite
   on this platform.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>val</parameter></term>
     <listitem>
      <para>
       The value to check
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &true; if <parameter>val</parameter> is a legal finite
   number within the allowed range for a PHP float on this platform,
   else &false;.
  </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>is_infinite</function></member>
    <member><function>is_nan</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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