Excellent - thanks for clarifying this! - Korny
On Sun, Feb 8, 2009 at 12:27 AM, Rich Hickey <richhic...@gmail.com> wrote: > > > 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 > > > > > -- Kornelis Sietsma korny at my surname dot com kornys on gmail, twitter, facebook, etc. "Every jumbled pile of person has a thinking part that wonders what the part that isn't thinking isn't thinking of" --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
