From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ted Zlatanov Newsgroups: gmane.emacs.devel Subject: bignum support in Emacs with libgmp (was: GNU Emacs-libnettle-libhogweed integration patch v1) Date: Sun, 06 Oct 2013 05:58:42 -0400 Organization: =?utf-8?B?0KLQtdC+0LTQvtGAINCX0LvQsNGC0LDQvdC+0LI=?= @ Cienfuegos Message-ID: <87vc1apvot.fsf@flea.lifelogs.com> References: <877gdqrc9u.fsf@flea.lifelogs.com> Reply-To: emacs-devel@gnu.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1381053536 26255 80.91.229.3 (6 Oct 2013 09:58:56 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 6 Oct 2013 09:58:56 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Oct 06 11:59:00 2013 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VSl74-0005xj-Da for ged-emacs-devel@m.gmane.org; Sun, 06 Oct 2013 11:58:58 +0200 Original-Received: from localhost ([::1]:54409 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VSl74-000375-4z for ged-emacs-devel@m.gmane.org; Sun, 06 Oct 2013 05:58:58 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51677) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VSl6w-00036j-2A for emacs-devel@gnu.org; Sun, 06 Oct 2013 05:58:56 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VSl6p-0000zi-UF for emacs-devel@gnu.org; Sun, 06 Oct 2013 05:58:50 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:48620) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VSl6p-0000zc-Nr for emacs-devel@gnu.org; Sun, 06 Oct 2013 05:58:43 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1VSl6o-0005qc-BP for emacs-devel@gnu.org; Sun, 06 Oct 2013 11:58:42 +0200 Original-Received: from c-98-229-61-72.hsd1.ma.comcast.net ([98.229.61.72]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 06 Oct 2013 11:58:42 +0200 Original-Received: from tzz by c-98-229-61-72.hsd1.ma.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 06 Oct 2013 11:58:42 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: emacs-devel@gnu.org Original-Lines: 18 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: c-98-229-61-72.hsd1.ma.comcast.net X-Face: bd.DQ~'29fIs`T_%O%C\g%6jW)yi[zuz6; d4V0`@y-~$#3P_Ng{@m+e4o<4P'#(_GJQ%TT= D}[Ep*b!\e,fBZ'j_+#"Ps?s2!4H2-Y"sx" Mail-Copies-To: never User-Agent: Gnus/5.130008 (Ma Gnus v0.8) Emacs/24.3.50 (gnu/linux) Cancel-Lock: sha1:lLMzGi1k+OEy+bgn3U4vwZmiE8o= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:163907 Archived-At: I remember we discussed a while ago that Emacs has bignum support in the `calc' package and that native Emacs integers were not adequate sometimes for large arithmetic. I wanted to propose that we consider exposing the libgmp (http://gmplib.org/ http://gmplib.org/manual/) functions to the Emacs core for managing bignums; specifically the mpz, mpq, and mpf functions. That would give Emacs powerful bignum arithmetic at (I hope) better speeds than a native ELisp implementation. libgmp is quite mature. The existing bignum support can remain as a fallback with refactoring or just remain as is. The new functionality would probably have to introduce new Lisp types. I don't plan to do the work myself currently but it would make a nice project if anyone is interested in picking it up. Ted