GNU bug report logs - #19582
25.0.50; [PATCH] Calc: glitches with negation of units

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Message #14 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Jay Belanger <jay.p.belanger <at> gmail.com>
To: Wolfgang Jenkner <wjenkner <at> inode.at>
Cc: jay.p.belanger <at> gmail.com, bug-gnu-emacs <at> gnu.org
Subject: Re: 25.0.50; [PATCH] Calc: glitches with negation of units
Date: Tue, 13 Jan 2015 10:06:52 -0600

>> Fantastic, thanks.  I'll apply the patches to Calc as soon as I get to
>> my home computer.
>
> I could do this myself, actually...

Great!

>> But what did you mean when you wrote:
>>    Apparently, the representation of numbers is sometimes
>>    influenced by previous results in the same calc stack.
>
> The same calculation can return an expression where some sub-expression
> is a plain integer, say 100, or the corresponding float (float 1 2).
> I'll provide an explicit example.

Okay, thanks.  Since 100 and (float 1 2) aren't the same, that might be
a bug of some kind.  I'm not sure that a test should indicate that they
are equal, so maybe you shouldn't put that part in yet.

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