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

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From: Andy Moreton <andrewjmoreton <at> gmail.com>
To: 32252 <at> debbugs.gnu.org
Subject: 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

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