On Mon, Mar 25, 2013 at 3:24 PM, Jim foo.bar <jimpil1...@gmail.com> wrote:
> On 25/03/13 15:22, Ben Wolfson wrote: > >> The 94th fibonacci number is greater than Long/MAX_VALUE, so it >> overflows. It is using longs. >> > > I see....shouldn't Clojure auto-promote it to a BigInt then? It doesn't by default. There are two options: a) artithmetic is polymorphic, and given a bigint argument, will use bigint arithmetic, so use 0N as suggested. b) use the auto-promoting arithmentic forms: +' -' *' inc' etc. Clojure used to do auto-promotion, but it is off by default now as it has a significant performance impact. In Java, a slot can either be a primitive or an object, so the auto-promoting forms are forced to box primitive objects in java.lang.Long wrappers. -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
