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To: FreeBSD-gnats-submit@freebsd.org
Cc: freebsd-bugs@freebsd.org
Subject: Re: bin/1305: dc miscomputes remainder
Date: Wed, 23 Oct 1996 09:05:51 -0700
From: John Polstra <jdp@polstra.com>
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> $ dc
> 20176126330 14336 %p
> 1012666
> 
> The correct answer is 14329.

According to my HP-16 calculator, the correct answer is 12666, not
14329.  So maybe it is a simple bug involving a portion of the answer
not getting cleared properly.

I built GNU bc-1.03, which contains their current version of "dc".  This
problem is fixed in that version.  The code is _very_ different from
what we have in our source tree.

The best solution might be to replace our "dc" and "bc" with the current
GNU versions.  They were released in November 1994, so they are presumably
quite stable.  Our "bc" and "dc" are already GPL-tainted; that's not
an issue.