On Feb 7, 2009, at 3:43 AM, Korny Sietsma wrote:
> > Ah - I didn't realise that. I was trying to avoid the overhead, as I > understood it, of both converting the parameters to Float/Double > objects, and then of checking for overflow. > > So '*' and '+' don't do overflow checking - do they need to convert > primitives to/from objects? Specifically, when I call: > (loop [x (double x) y (double y)] > ... do maths to x and y > (recur x y) > ) > > Is it going to have to convert x and y between 'double' and 'Double' > at all, or will it just work with primitive types??? > This will declare the locals x and y to be primitive doubles, converting once on entry, and all math ops involving them and other primitives will be primitive. Also, if you accidentally try to recur with a boxed value you will get an error. Rich --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
