POV-Ray : Newsgroups : povray.general : Re: (X <= D) is not equal ((X<D) | (X=D)) : Re: (X <= D) is not equal ((X<D) | (X=D)) Server Time
9 Aug 2024 23:26:20 EDT (-0400)
  Re: (X <= D) is not equal ((X<D) | (X=D))  
From: Warp
Date: 26 Apr 2000 04:56:55
Message: <3906af56@news.povray.org>
Peter J. Holzer <hjp### [at] sikituwsracat> wrote:
: This is wrong. FP numbers have exactly the same precision regardless of
: the scale (unless you get into the range of denormalized numbers).

  Ok, my wording was not mathematically accurate.
  What I was trying to say was that a cylinder of 1 meter at the origin can
be very accurately expressed, but the same cylinder at a distance of
10^100 from the origin will not likely to be exactly 1 meter long because
of accuracy problems.
  This means, for example, that if you are modelling the solar system
with accurate distances and using 1 povray unit as 1 meter, and then you
sloooowly rotate the Earth around the Sun, it will most probably move in
jumps.
  And this of course regardless of your epsilon.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/


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