Re: Bug in dc

From	John Cowan <cowan@ccil.org>
Newsgroups	gnu.utils.bug
Subject	Re: Bug in dc
Date	2018-07-17 16:23 -0400
Message-ID	<mailman.3730.1531859005.1292.bug-gnu-utils@gnu.org> (permalink)
References	<CAHv5L_3E4qZ0oXsHpeFrW2ZCGfO6x7SrBWMkd5viobwqd+JZBw@mail.gmail.com>

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That's because bc uses base-10 arithmetic internally.  It is the equal and
opposite phenomenon to the loss of significance in other languages when
using standard base-2 floating point.

On Tue, Jul 17, 2018 at 3:28 PM, Russell Harper <russell.s.harper@gmail.com>
wrote:

> Literal real values in bases other than 10 lose precision, e.g.
>
> $ dc <<<'16 d i o F423F.FD p'
> F423F.FA
>
> Would expect the output to be F423F.FD
>
> It basically makes the calculator useless for non-decimal calculations.
>
> Regards,
>
> Russell
>

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Re: Bug in dc John Cowan <cowan@ccil.org> - 2018-07-17 16:23 -0400

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