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Newsgroups: comp.lang.ada
Date: Mon, 16 Jul 2018 21:44:58 -0700 (PDT)
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Subject: Re: Simple hash or pseudo-random function
From: robin.vowels@gmail.com
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Xref: reader02.eternal-september.org comp.lang.ada:53861
Date: 2018-07-16T21:44:58-07:00
List-Id: <comp.lang.ada>

On Monday, July 16, 2018 at 11:34:02 PM UTC+10, Shark8 wrote:
> On Monday, July 16, 2018 at 2:20:28 AM UTC-6, gautier...@hotmail.com wrot=
e:
> > Hello,
> > Does someone have a function that would take an integer (range 0 .. 2**=
63), not uniformily distributed (it's a code with some meaning) and return =
a number that is pseudo-random, uniformily distributed (could be a floating=
-point number or an integer in a range of minimum length 365) ?
> > The difficulty for me is to find a very simple function. There are many=
 that are for hashing strings, but they could be too time-consuming: it's f=
or a number-crunching program where this function will be called billions o=
f times, so I'm looking for something really simple (and fast :-) ).
> > TIA
>=20
> There was somebody a few years back who was an older Mathematician who po=
sted a RNG function to this board some years ago. That might be useful for =
you. (I want to say his method was KISS#### or something like that.)

That was George Marsaglia, and he was author of a number of
excellend pseudo random number generators.