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Re: Are Floating Point Numbers still a Can of Worms?

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John,

>> :-) The fact that that BigInt float exists (or even a 80-bit float) does
>> seem to indicate that there are people out there that disagree with you.
>   <Snip>
>
> I was indicating that it's not a "can of worms".

Ah thataway.   Well, in that case I don't fully agree with you there.    You 
have to know what you're dealing with not to stumble into a floats pitfalls.

... as you've eloquently shown in your next message :

> For what it's worth, the correct value of 1889**29 is :
>
> 102500687830512064253064716070601123218909116358654017979384519544555980744900395407329380298209
>
> so the ...206 value is most accurate and ...207 is only slightly less 
> accurate. The ...204 value illustrates why you want to cut down the number 
> of floating point operations to get an answer.

Although I was aware that multiple divisions (creating small fractional 
results) could easily lead to precision problems, I fully overlooked that 
those same problems could creep up on you when doing integer multiplications 
resulting in big numbers. :-\

Regards,
Rudy Wieser

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Thread

Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <bursejan@gmail.com> - 2022-10-14 15:52 -0700
  Re: Are Floating Point Numbers still a Can of Worms? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-10-15 01:52 +0100
  Re: Are Floating Point Numbers still a Can of Worms? "R.Wieser" <address@not.available> - 2022-10-15 09:33 +0200
    Re: Are Floating Point Numbers still a Can of Worms? "R.Wieser" <address@not.available> - 2022-10-15 10:00 +0200
    Re: Are Floating Point Numbers still a Can of Worms? John Harris <niam@jghnorth.org.uk.invalid> - 2022-10-15 11:13 +0100
      Re: Are Floating Point Numbers still a Can of Worms? "R.Wieser" <address@not.available> - 2022-10-15 13:43 +0200
        Re: Are Floating Point Numbers still a Can of Worms? John Harris <niam@jghnorth.org.uk.invalid> - 2022-10-15 15:56 +0100
          Re: Are Floating Point Numbers still a Can of Worms? "R.Wieser" <address@not.available> - 2022-10-15 17:44 +0200
  Re: Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <janburse@fastmail.fm> - 2022-10-15 14:25 +0200
    Re: Are Floating Point Numbers still a Can of Worms? "R.Wieser" <address@not.available> - 2022-10-15 16:31 +0200
      Re: Are Floating Point Numbers still a Can of Worms? John Harris <niam@jghnorth.org.uk.invalid> - 2022-10-15 16:22 +0100
        Re: Are Floating Point Numbers still a Can of Worms? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2022-10-15 17:04 +0100
          Re: Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <bursejan@gmail.com> - 2022-10-15 09:47 -0700
            Re: Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <janburse@fastmail.fm> - 2022-10-15 18:51 +0200
              Re: Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <bursejan@gmail.com> - 2022-10-22 14:35 -0700
                Re: Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <bursejan@gmail.com> - 2022-11-21 09:02 -0800
  Re: Are Floating Point Numbers still a Can of Worms? Julio Di Egidio <julio@diegidio.name> - 2022-10-17 02:00 -0700
    Re: Are Floating Point Numbers still a Can of Worms? Mostowski Collapse <bursejan@gmail.com> - 2022-10-18 07:40 -0700

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