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PureBytes Links
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If you enter a
number, it will be as you entered it. If you calculate a number then you
will get this long string.
<FONT face=Arial
size=2>
<FONT face=Arial
size=2>Lionel
<FONT face=Tahoma
size=2>-----Original Message-----From: rtstrade
[mailto:rtstrade@xxxxxxxxxxx] Sent: Wednesday, October 30, 2002 2:32
PMTo: Metastockusers@xxxxxxxxxxxxxxxSubject:
[Metastockusers] Re: Optimization ValuesHumm, I
have never seen this happen in any prior version. When I entered 0.40
it came out 0.40 not 0.40000001.Oh, well, it does not matter, just looked
weird.Thanks!Bob--- In Metastockusers@xxxx, "Lionel
Issen" <lissen@xxxx> wrote:> Yes. This is true for all prior
versions.> > The round off string of X.999999999 or
Y.00000001 can be eliminated by> using a round off correction. This
is done by adding a 5 to the last> digit in the string and rounding to
one digit less. Most hand> calculators have it as do most spreadsheet
programs.> > Single precision, 16 bit, (2**16) gives about 4
digit precision. To get> decent precision we need 32 bit
precision.> > About a year or two ago Guy Tann, a very good
trader, tried to use> Metastock Pro. He is the kind of person that checks
and double checks.> He found that Metastock was giving him incorrect
answers. He quickly> determined that the reason was the single precision
factor. When he> asked Equis about this they gave a very stupid
excuse. They said that> double precision would use up too much memory
and they didn't want to> impose this on their users. Now this may
have been valid in the days of> the 286 and the 386, but not today
with memory and hard drives being so> cheap.> >
Guy dropped Metastock and stopped posting to the Listserver.>
> Hope this clarifies things.> > Lionel>
> > > -----Original Message-----> From:
rtstrade [mailto:rtstrade@xxxx] > Sent: Wednesday, October 30, 2002 1:57
PM> To: Metastockusers@xxxx> Subject: [Metastockusers] Re:
Optimization Values> > > I never experienced this in prior
versions?> Are you seeing the same two digit value extrapolated into 7
digits > like I am?> Very weird.> Bob> >
> > --- In Metastockusers@xxxx, "Lionel Issen" <lissen@xxxx>
wrote:> > Round off error, usually nothing o worry about.>
> > > Metastock only has single precision arithmetic, which
is very > stupid.> > > > Lionel>
> > > > > > > -----Original
Message-----> > From: rtstrade [mailto:rtstrade@xxxx] > >
Sent: Wednesday, October 30, 2002 12:41 PM> > To:
Metastockusers@xxxx> > Subject: [Metastockusers] Optimization
Values> > > > > > Maybe my program is messed up
with the stop problem, etc. But when > I > > place a
decimal value in the optimization, say 0.40 to 0.60, with a > >
step of 0.01, I get 0.40000001 to 0.60000002, step is 0.0099999998?>
> > > Whatzup??> > > > Anyone else see
this?> > > > Bob> > > > > >
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to:> > Metastockusers-unsubscribe@xxxx> > > >
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