On Mar 5, 10:00 pm, "mike.farn...@gmail.com" <mike.farn...@gmail.com> wrote: > I was sort of surprised by this. > > user=> (+ (float (* (/ 2) (/ 3))) (float (* (/ 2) (/ 3))) ) > 0.33333334 > > (= (+ (float (* (/ 2) (/ 3))) (float (* (/ 2) (/ 3))) ) (/ 3) ) > yields true > > How is tracking these number internally? > > And, why does it present the float version of 1/3, > as rounded up?
This is a question about floating-point arithmetic, not about Clojure. See http://en.wikipedia.org/wiki/IEEE_754 and http://docs.sun.com/source/806-3568/ncg_goldberg.html In particular, note that Java uses binary representation for floating- point numbers, which probably explains the "rounding up" observation. mfh --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
