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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@informatik.tu-muenchen.de (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: TMapping again!
- Date: 23 Jan 1996 18:31:23 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4e39hr$9nj@sunsystem5.informatik.tu-muenchen.de>
- References: <4dmnbq$pur@morgoth.sfu.ca> <DLL1MI.BqJ@si.hhs.nl>
- NNTP-Posting-Host: hphalle5.informatik.tu-muenchen.de
- Originator: fischerj@hphalle5.informatik.tu-muenchen.de
-
-
- In article <DLL1MI.BqJ@si.hhs.nl>, robv@si.hhs.nl (Veer) writes:
- |> Lines: 23
- |>
- |> In article pur@morgoth.sfu.ca, samy@news.sfu.ca (Sam Yee) writes:
- |>
- |>
- |> > >Remember: a*b = log(a+b).
- |> >
- |> > Oops! log(a*b)=log(a)+log(b)
- |>
- |> Yes, you are right. and I was wrong.
- |>
- |> But maybe there still is a way to eliminate multiplications without having
- |> big pre-calc tables?
- |>
- aah, that's why the log talk :) I also had this idea, but as I'm not
- maths freak I see it philosophic: if there was a way in using log for this,
- some maths freak would have done ;)
-
- But then, you can't prove philosophic statemaents, and as
-
- (begin insult mode :)
-
- as all maths freaks seem to be OS-fanatics that chose slower methods
- just because the source looks better ;D maybe there is a chance that
- log can be useful ;)
-
- (end insult mode :)
-
- well, log is maybe not that bad, because multilying large numbers you
- don't need so much accuracy behind the point ?
-
- i.e log-tables are maybe smaller than linear mul tables ?
-
- argh you'll need a log^-1 table, too. a*b=log^-1(log(a)+log(b))
- ^----.
- mhm adding numbers of different size gives accuracy probs! |
-
- there is really a lot to think about...
-
- |> CYa,
- |>
- |> Rob.
- |>
- |> ---
- |> Think about this for a while:
- |>
- |> Only fools can develop fool-proof applications.
- |>
- |>
- |>
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-