0 is not a power of 2

[Nicholas Wilson via Digitalmars-d]

>On Tuesday, 19 May 2015 at 05:16:48 UTC, Andrei Alexandrescu 
>wrote:
> ...
> Any ideas for faster code?
>
>
> Thanks,
>
> Andrei

I found 
www.davespace.co.uk/blog/20150131-branchless-sequences.html
and its links to be useful and interesting.

Nic