protected String r(String s,String u) throws Exception {
  Date dt=DateMathParser.parseMath(null,s + "Z/" + u);
  return fmt.format(dt.toInstant());
}

protected String r ( String s , String u ) throws Exception { Date dt = DateMathParser . parseMath ( null , s + "Z/" + u ) ; return fmt . format ( dt . toInstant ( ) ) ; }
macro : round : parses s , rounds with u , fmts
