fib(A,B,C,_) when A == B -> C; fib(A,B,C,D) -> fib1(A,B+1,C+D,C). call it with fib(X,1,1,0). -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://erlang.org/pipermail/erlang-questions/attachments/20051216/62d5fb9e/attachment.htm>