Re: Another little puzzle

Newsgroups	comp.programming
Date	2023-01-09 16:33 -0800
References	(4 earlier) <tnclg3$2of9o$2@dont-email.me> <tncob5$1oat$1@gioia.aioe.org> <tncpgk$2of9h$7@dont-email.me> <tncqs4$uoe$1@gioia.aioe.org> <tncquh$vj3$1@gioia.aioe.org>
Message-ID	<42fc040f-d485-4119-b70a-8fc346eca49bn@googlegroups.com> (permalink)
Subject	Re: Another little puzzle
From	Y A <angel00000100000@mail.ee>

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Look this
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⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ 🛩
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⠀⠀⠀⠀🌴⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀🍄 ⠀⠀⠀⠀ 🌼⠀⠀⠀⠀ 🌻
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How do You rate this on 1....10 scale ?


On Wednesday, December 14, 2022 at 5:43:18 PM UTC+2, Dmitry A. Kazakov wrote:
> On 2022-12-14 16:41, Dmitry A. Kazakov wrote: 
> > On 2022-12-14 16:18, Richard Heathfield wrote: 
> > 
> >>> BTW, averaging floats is a nasty problem too. A naive implementation 
> >>> quickly loses precision. 
> >> 
> >> We're dealing with 'o'clock' and "HH:MM", and nowadays we have 64-bit 
> >> integer types and there are even 128-bit integers mooching around 
> >> looking for a reason to exist. You'd have to average a hell of a lot 
> >> of times even to /need/ floats, let alone lose significant precision. 
> > 
> > I never suggested float for averaging time stamps, I pointed out that 
> > averaging is not a simple problem. E.g. try this one: 
> > 
> >    function Average (X : Float; N : Positive) return Float is 
> >       Sum : Float := 0.0; 
> >    begin 
> >       for Index in 1..N loop 
> >          Sum := Sum + X; 
> >       end loop; 
> >       return Sum / Float (N); 
> >    end Average; 
> > 
> > The function does naive averaging. For simplicity it just sums up the 
> > same number X N times and divides by N. 
> > 
> >    Average (1.0, 17_000_000)  = 0.986895 
> >    Average (1.0, 100_000_000) = 0.167772 
> >    Average (1.0, 200_000_000) = 0.838861
> 0.0838861 
> 
> The error is obviously systematic.
> -- 
> Regards, 
> Dmitry A. Kazakov 
> http://www.dmitry-kazakov.de

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Re: Another little puzzle "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2022-12-14 14:06 +0100
  Re: Another little puzzle Richard Heathfield <rjh@cpax.org.uk> - 2022-12-14 13:10 +0000
    Re: Another little puzzle "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2022-12-14 14:35 +0100
      Re: Another little puzzle Richard Heathfield <rjh@cpax.org.uk> - 2022-12-14 14:10 +0000
        Re: Another little puzzle "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2022-12-14 15:58 +0100
          Re: Another little puzzle Richard Heathfield <rjh@cpax.org.uk> - 2022-12-14 15:18 +0000
            Re: Another little puzzle "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2022-12-14 16:41 +0100
              Re: Another little puzzle "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2022-12-14 16:43 +0100
                Re: Another little puzzle Y A <angel00000100000@mail.ee> - 2023-01-09 16:33 -0800
              Re: Another little puzzle Richard Heathfield <rjh@cpax.org.uk> - 2022-12-14 16:13 +0000
        Re: Another little puzzle V <angleeeeeeee@mail.ee> - 2023-05-10 11:16 -0700
    Re: Another little puzzle Ǝ <angel0000000001000000000000@mail.ee> - 2022-12-30 05:59 -0800

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