xmlChar * decoded = PmmFastDecodeString( PmmNodeEncoding(real_doc) ,
                                                     ( xmlChar *)string,
                                                     ( xmlChar *)real_doc->encoding);

##</code><code>##

xmlChar *decoded;
......
decoded = PmmFastDecodeString( PmmNodeEncoding(real_doc) ,
                                                     ( xmlChar *)string,
                                                     ( xmlChar *)real_doc->encoding);