[fpc-pascal] Re: Why this evaluates on "if" wrong ?

Michael Van Canneyt michael at freepascal.org
Mon Oct 29 14:57:53 CET 2007

On Mon, 29 Oct 2007, L wrote:

> > The programmer definitely should care. He has to make the right choice
> > in what type he chooses, so he must be aware of any 'quircks' of the type
> > he is using, and that includes how things are rounded and how they are
> > stored in memory. That's why there are IEEE references for this.
> >
> > It's his job to make sure that the end user gets something sensible on the
> > screen, and that includes rounding to a usable number of digits.
> Agree.
> >
> > The currency type calculates with a certain precision for you if you really
> > don't want to be bothered with the gory details. The opposite side of the
> > medal is that it's limited to 4 digits, and cannot be larger than 2^59 or
> > thereabouts.
> >
> As long as there is some type where you can treat the language like a regular
> old dumb casio calculator that was used in grade school math, then I'm happy. I
> haven't done much currency work or float work with Pascal and wanted to confirm
> there was at least a dumb/simple high level decimal type out there somewhere for
> when you need one ;-)

Currency should do fine, as long as you don't need more than 4 decimal


More information about the fpc-pascal mailing list