From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Using the GNU GMP Library for Bignums in Emacs Date: Wed, 01 Aug 2018 14:59:14 +0300 Message-ID: <83wotamh65.fsf@gnu.org> References: <29f933ac-a6bf-8742-66a7-0a9d6d3e5a88@disroot.org> <83bmecy6fx.fsf@gnu.org> <0d3175d8-d996-651e-b221-71978bde3a65@cs.ucla.edu> <87tvpdnzgy.fsf@tromey.com> <4c2a814f-c254-29e5-39cf-11b5f2e5c9c8@cs.ucla.edu> <49d8ba62-c9a5-9203-d882-8e900b441ff3@cs.ucla.edu> <8e0320d9-e0d0-2b57-57cc-2df4399f133c@cs.ucla.edu> <87lgaio7xd.fsf@tromey.com> <877em1cb0i.fsf@tromey.com> <765767b2-d2e5-a9a6-f724-d58ecf4847bb@cs.ucla.edu> <1452F858-C7FD-4AEB-BB85-D874692F918F@raeburn.org> <5b3be3f4-d438-166a-863a-587c880584c8@cs.ucla.edu> <94d69bf6-d186-3607-5b1d-9dee4a08ace1@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1533124683 25344 195.159.176.226 (1 Aug 2018 11:58:03 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 1 Aug 2018 11:58:03 +0000 (UTC) Cc: emacs-devel@gnu.org, raeburn@raeburn.org, tom@tromey.com, monnier@IRO.UMontreal.CA, rms@gnu.org To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Aug 01 13:57:59 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fkplM-0006Mh-L7 for ged-emacs-devel@m.gmane.org; Wed, 01 Aug 2018 13:57:56 +0200 Original-Received: from localhost ([::1]:39196 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkpnR-0005JR-BA for ged-emacs-devel@m.gmane.org; Wed, 01 Aug 2018 08:00:05 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:42996) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkpmp-0005J7-DA for emacs-devel@gnu.org; Wed, 01 Aug 2018 07:59:28 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fkpml-0004Y2-FE for emacs-devel@gnu.org; Wed, 01 Aug 2018 07:59:27 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:46911) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkpml-0004Xy-Ax; Wed, 01 Aug 2018 07:59:23 -0400 Original-Received: from [176.228.60.248] (port=2897 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1fkpmS-00084M-98; Wed, 01 Aug 2018 07:59:04 -0400 In-reply-to: <94d69bf6-d186-3607-5b1d-9dee4a08ace1@cs.ucla.edu> (message from Paul Eggert on Wed, 1 Aug 2018 00:57:09 -0700) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:228081 Archived-At: > From: Paul Eggert > Date: Wed, 1 Aug 2018 00:57:09 -0700 > Cc: Tom Tromey , Stefan Monnier , > Richard Stallman , emacs-devel@gnu.org > > No further comment on this, and I went with (3) and installed into master the > attached patch to do something along those lines on platforms that have > ieee754.h (mostly GNUish platforms, I expect). Other platforms are unaffected. Thanks, but isn't there a way to test whether a platform supports IEEE FP representation except by looking for ieee754.h? AFAICS, that header just defines a few data structures that any IEEE-compliant platform should be able to work with. So limiting this to glibc platforms is too restrictive, I think.