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> -----Original Message-----
> From: blackbox{([at]})nowhere.xy> Behalf Of H.v.L.
> Sent: Friday, 23 June 2006 2:05 AM
> To: BlackBox Mailing List
> Subject: [BlackBox] - BYTE arithmetic
>
>
> On Thu, 22 Jun 2006 17:10:33 +0200, Treutwein Bernhard
> <Bernhard.Treutwein{([at]})nowhere.xy>
> >> The bottom line: use INTEGER as a loop counter. Do not use BYTE or
> >> SHORTINT.
> >>
> >
> > absolutely correct.
> >
>
> If this is to say that with type INTEGER the problems are
> gone I suggest trying the following loop
>
> FOR Index := MAX(INTEGER) - 10 TO MAX(INTEGER) DO
> Out.Int(Index, 15);
> IF (Index < 0) & (Index >= MIN(INTEGER) + 100) THEN RETURN
> END (* for convenience only *) END
>
FOR loops are recommended for specific tasks like iterating through arrays
so the examples discussed so far should not occur too often in practice.
Typically FOR loops look like this:
FOR i := 0 TO ArraySize - 1 DO ...
However, anytime you are working with boundary conditions and there is a
potential for overflow you have to take the utmost care. It is not just a
FOR loop issue. If in doubt, compile with overflow checking enabled:
DevCompiler.CompileOpt('+')
Regards,
Chris Burrows
CFB Software
http://www.cfbsoftware.com
--- BlackBox
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Received on Fri Jun 23 2006 - 01:52:12 UTC