These functions doesn't exist.
Suggest to use g_ucs4_to_utf8/g_utf8_to_ucs4 to produce the UTF-8
representation of a gunichar
This fix bug: https://bugzilla.gnome.org/show_bug.cgi?id=601874
as a Unicode code point.
</para>
<para>
-To print/scan values of this type to/from text you need to convert
-to/from UTF-8, using g_utf32_to_utf8()/g_utf8_to_utf32().
+If you want to produce the UTF-8 representation of a #gunichar,
+use g_ucs4_to_utf8(). See also g_utf8_to_ucs4() for the reverse process.
</para>
<para>
To print/scan values of this type as integer, use