There are many problems with that link. First of all - there is no "branchless bresenham" in it. Second - the author, while noticing that float to int conversion in his compiler is slow, decided not to do anything about it instead of doing a simple google search to find how to do it fast enough. Third - he is using 8087 FP instructions, which had been deprecated since late 90s. Fourth - he is essentially measuring function call (look what's happening in his inner loop). And fifth - he is not measuring other Bresenham's algorithms. I'd love to see how he does ellipses with fixed point.