From: Andy Moreton <andrewjmoreton@gmail.com>
To: 32463@debbugs.gnu.org
Subject: bug#32463: 27.0.50; (logior -1) => 4611686018427387903
Date: Tue, 21 Aug 2018 15:52:23 +0100 [thread overview]
Message-ID: <vz1bm9vzs9k.fsf@gmail.com> (raw)
In-Reply-To: <b4m8t55llg6.fsf@jpl.org>
On Tue 21 Aug 2018, Eli Zaretskii wrote:
>> From: Paul Eggert <eggert@cs.ucla.edu>
>> Date: Tue, 21 Aug 2018 02:40:34 -0700
>> Cc: andrewjmoreton@gmail.com, 32463@debbugs.gnu.org
>>
>> I installed the attached patch to do that. It tentatively defaults to a limit of
>> 2↑↑5 (i.e., 2**65536) for bignums, overrideable by setting a new variable
>> 'integer-width' that defaults to 65536. This default should be big enough for
>> almost all Emacs applications and should avoid issues of aborts and hangs.
>
> Should the default value be different on 32-bit platforms?
For a 32bit platform using 32bit mp_limb_t, this is only 2048 limbs, so
well within range of mpz_t::_mp_size. Having the same limit on all
platforms should be fine.
Does this limit apply to bignum values in lisp objects, or to
intermediate values inside libgmp, which may require extra space ?
The documentation for `integer-width' should make this clear.
AndyM
next prev parent reply other threads:[~2018-08-21 14:52 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-17 3:29 bug#32463: 27.0.50; (logior -1) => 4611686018427387903 Katsumi Yamaoka
2018-08-17 5:59 ` Pip Cet
2018-08-17 7:40 ` Katsumi Yamaoka
2018-08-17 9:27 ` Andy Moreton
2018-08-17 11:36 ` Pip Cet
2018-08-17 11:53 ` Pip Cet
2018-08-17 13:27 ` Andy Moreton
2018-08-18 22:43 ` Paul Eggert
2018-08-17 13:24 ` Andy Moreton
2018-08-18 18:48 ` Paul Eggert
2018-08-18 18:59 ` Eli Zaretskii
2018-08-18 19:58 ` Pip Cet
2018-08-18 22:27 ` Paul Eggert
2018-08-19 15:03 ` Eli Zaretskii
2018-08-18 19:59 ` Paul Eggert
2018-08-18 19:45 ` Andy Moreton
2018-08-19 10:43 ` Live System User
2018-08-20 3:02 ` Richard Stallman
2018-08-20 3:47 ` Paul Eggert
2018-08-21 3:37 ` Richard Stallman
2018-08-18 22:56 ` Paul Eggert
2018-08-18 23:17 ` Paul Eggert
2018-08-19 10:34 ` Andy Moreton
2018-08-19 10:48 ` Pip Cet
2018-08-19 10:59 ` Paul Eggert
2018-08-19 11:32 ` Pip Cet
2018-08-21 9:40 ` Paul Eggert
2018-08-21 10:50 ` Andy Moreton
2018-08-21 14:36 ` Eli Zaretskii
2018-08-21 14:52 ` Andy Moreton [this message]
2018-08-21 17:24 ` Paul Eggert
2018-08-19 10:52 ` Paul Eggert
2018-08-22 2:29 ` Paul Eggert
2018-08-22 16:56 ` Tom Tromey
2018-08-22 17:52 ` Paul Eggert
2018-08-22 18:25 ` Eli Zaretskii
2018-08-23 0:28 ` Paul Eggert
2018-08-23 2:39 ` Eli Zaretskii
2018-08-19 18:00 ` Andy Moreton
2018-08-22 2:34 ` Paul Eggert
2018-08-22 23:27 ` Andy Moreton
2018-08-23 14:05 ` Eli Zaretskii
2018-08-22 2:56 ` Paul Eggert
2018-08-22 8:20 ` Andy Moreton
2018-08-22 8:39 ` Andy Moreton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=vz1bm9vzs9k.fsf@gmail.com \
--to=andrewjmoreton@gmail.com \
--cc=32463@debbugs.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).