GNU bug report logs - #32252
[PATCH] %o and %x now format signed numbers

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Package: emacs;

Reported by: Paul Eggert <eggert <at> cs.ucla.edu>

Date: Mon, 23 Jul 2018 19:14:02 UTC

Severity: normal

Tags: patch

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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Message #136 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Andy Moreton <andrewjmoreton <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#32252: [PATCH] %o and %x now format signed numbers
Date: Thu, 26 Jul 2018 13:54:21 +0100

On Thu 26 Jul 2018, Paul Eggert wrote:

> Brett Gilio wrote:
>> I wonder what you mean by "just
>> works" in contrast to what Eli suggested about the inconsistency in
>> behavior between the different function definitions for fixnums and
>> bignums.
>
> I meant that ordinarily Emacs Lisp programmers should not worry whether an
> integer's internal representation is a bignum or a fixnum. Functions like +,
> -, 
> *, /,  format, read, etc. should accept and generate mathematically correct
> integer values regardless of whether their inputs are fixnums or bignums. If
> an integer fits in a fixnum it is presumably represented that way, but by and
> large Emacs programs should not care about this detail.
>
> That is how other Lisps do it, it works well for them, and Emacs Lisp should
> do likewise.

That is uncontroversial for arithmetic operations, but how are bitwise
logical operations handled in other lisps with bignums ?

    AndyM
This bug report was last modified 2 years and 323 days ago.

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