From: Simon Weitzhofer <simon@ge...>  20120823 16:55:21

Hi, Evaluating > on rounded; > sum(x**0.5,x,1,2) yields an error: ++++ Attempt to take car of an atom +++++ Error: Attempt to take car of an atom The problem seems to be the function freeofdfl(u,v) in the file sum.red since defining symbolic procedure freeof!dfl(u, v); if null u or atom u then t else freeof!df(car u,v) and freeof!dfl(cdr u,v); instead of symbolic procedure freeof!dfl(u, v); if null u then t else freeof!df(car u,v) and freeof!dfl(cdr u,v); solves the problem. Best wishes, Simon 