ExLisper

Hi all,

Some time ago I've been thinking about a programming challenge that's not simply another HackerRank style algorithm task and came up with something that I myself had a lot of fun solving. It goes like this:

We have a well known function (as in I didn't come up with it):

 function xoshiro128ss(a, b, c, d) {
                return function() {
                    var t = b << 9, r = b * 5; r = (r << 7 | r >>> 25) * 9;
                    c ^= a; 
                    d ^= b;
                    b ^= c; 
                    a ^= d; 
                    c ^= t;
                    d = d << 11 | d >>> 21;
                    
                    return (r >>> 0) / 4294967296;
                }
            }  

We initialize it with 4 random parameters a,b,c,d (that I selected) :

  let rnd = xoshiro128ss(a, b, c, d);

and we do:

  let rand1 = rnd();
  let rand2 = rnd();
  let rand3 = rnd();
  let rand4 = rnd();

Knowing that:

rand1 == 0.38203435111790895
rand2 == 0.5012949781958014
rand3 == 0.5278898433316499
rand4 == 0.5114834443666041

What are the values of a,b,c and d?

I was wandering if it's possible to figure it out and couldn't stop trying until I did. It was an interesting journey and I learned some new things along the way Maybe someone else here will also have fun with it. As for prizes, I don't know... whoever posts the right answer first gets an upvote and eternal fame.

By now most of you know that I'm by far the most reasonable person on lemmy. I'm basically real life Judiciary Pag. Well, maybe not the Very Relaxed part... But I'm very Learned and extremely Impartial.

So here's the deal: if you need to resolve some conflict, if you need someone to decide who's the asshole or simply can't decide who's right and who's wrong in a silly comment fight - just ask. I will give you my totally unbiased, 100% impartial opinion and you will be able to move on with your life.

#IWBTJOT

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Hi,

So I have lived in Spain now for almost 10 years and I will be applying for citizenship soon. As part of this process I can pretty much chose my Spanish name. Or I can keep my polish name.

The problem is that my name is very polish, like Grzegorz Filipowski. Every time someone has to write it down and look me up in a database I have to show them my ID. When it happens over the phone I have to spell it. Every time I meet someone they ask me what's my name is and then repeatedly try to pronounce it while I say 'yeah... close enough'. It's pretty annoying and it would be solved by simply changing my name to something Spanish like Gregorio González or something.

What do you think? Would you see it as a practical thing to do or as a stupid intent at impersonating a real Spaniard?

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What's your record?

Cheese

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Thunderbird pissed me off by removing the tray icon...

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Discuss!

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How close was it?