Potential faster day-of-week algorithm

[benjoffe]

Hi there,

I thought you might be interested in this faster algorithm for computing the day-of-week, which I have outlined here:
https://www.benjoffe.com/fast-day-of-week

I raised this as there seemed to be interest in micro-optimisations given the previous discussion in issue #758

Of course, feel free to close this if you are uninterested.

Btw, I've updated the leap-year article on the site with your previous observation about using abs(year) with the Falk Hüffner's algorithm.

Cheers,

Ben

[jhpratt]

When I get a chance I'll read the full article. From looking at the intro, all I can say is that you're a mad man and I love it.