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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="intlchar.foldcase" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>IntlChar::foldCase</refname>
<refpurpose>Perform case folding on a code point</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="IntlChar">
<modifier>public</modifier> <modifier>static</modifier> <type class="union"><type>int</type><type>string</type><type>null</type></type><methodname>IntlChar::foldCase</methodname>
<methodparam><type class="union"><type>int</type><type>string</type></type><parameter>codepoint</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>options</parameter><initializer>IntlChar::FOLD_CASE_DEFAULT</initializer></methodparam>
</methodsynopsis>
<para>
The given character is mapped to its case folding equivalent; if the character has no case folding equivalent,
the character itself is returned.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>codepoint</parameter></term>
<listitem>
&intl.codepoint.parameter;
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
Either <constant>IntlChar::FOLD_CASE_DEFAULT</constant> (default)
or <constant>IntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I</constant>.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the <emphasis>Simple_Case_Folding</emphasis> of the code point, if any; otherwise the code point itself on success,
or &null; on failure.
</para>
</refsect1>
</refentry>
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