Here's an article explaining the trick: http://ridiculousfish.com/blog/posts/labor-of-division-episode-iii.html http://ridiculousfish.com/blog/posts/labor-of-d

Here's an article explaining the trick: http://ridiculousfish.com/blog/posts/labor-of-division-episode-iii.html http://ridiculousfish.com/blog/posts/labor-of-division-episo... And a library from the same guy for generating code at runtime to do fast division by constants: http://libdivide.com/ http://libdivide.com/