4 ms·

Edit: Turns out I saw this on HN earlier. It has a huge problem: it's not portable C!! Have fun with the attribute, unistd.h, __builtin_clz, etc.

Edit: Turns out I saw this on HN earlier. It has a huge problem: it's not portable C!! Have fun with the __attribute__, unistd.h, __builtin_clz, etc.