unofficial mirror of guile-devel@gnu.org 
 help / color / mirror / Atom feed
From: <tomas@tuxteam.de>
To: guile-devel@gnu.org
Subject: Re: Immediate doubles (up to 2^256) and rationals coming to Guile 3
Date: Thu, 6 Jun 2019 22:09:03 +0200	[thread overview]
Message-ID: <20190606200903.GA27080@tuxteam.de> (raw)
In-Reply-To: <87zhmvaw5p.fsf@netris.org>

[-- Attachment #1: Type: text/plain, Size: 500 bytes --]

On Thu, Jun 06, 2019 at 05:40:39AM -0400, Mark H Weaver wrote:
> I've found a way to efficiently support both immediate IEEE binary-64
> doubles up to ~1.158e77 (with larger ones transparently allocated on the
> heap), and also immediate exact rationals with up to 54 binary digits
> (~16 decimal digits), without restricting the 64-bit pointer space at
> all, and without any loss of arithmetic precision.

[...]

Impressive bitfiddling feat. Thanks for the enjoyable explanation, too!

Cheers
-- t

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 198 bytes --]

  parent reply	other threads:[~2019-06-06 20:09 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-06  9:40 Immediate doubles (up to 2^256) and rationals coming to Guile 3 Mark H Weaver
2019-06-06 12:56 ` Mark H Weaver
2019-06-06 19:37 ` Arne Babenhauserheide
2019-06-12  0:03   ` Mark H Weaver
2019-06-06 20:09 ` tomas [this message]
2019-06-07 19:46 ` Ludovic Courtès
2019-06-09 16:56   ` Mark H Weaver
2019-06-09 17:30     ` Mark H Weaver
2019-06-11  8:39     ` Ludovic Courtès
2019-06-11 10:58       ` Mark H Weaver
2019-06-11 12:21         ` Ludovic Courtès
2019-06-11 11:34       ` Mark H Weaver
2019-06-08  1:13 ` Mark H Weaver
2019-06-08  8:07   ` Arne Babenhauserheide
2019-06-08  9:08     ` Chris Vine
2019-06-08  9:46       ` Arne Babenhauserheide
2019-06-08 10:24         ` Chris Vine
2019-06-08 13:12       ` Hans Åberg

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/guile/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190606200903.GA27080@tuxteam.de \
    --to=tomas@tuxteam.de \
    --cc=guile-devel@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.
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).