From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: lognot Date: Thu, 1 Aug 2019 00:13:48 -0700 Organization: UCLA Computer Science Department Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------4B5327557E4230871760B65C" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="84978"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 Cc: emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Aug 01 09:14:35 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ht5II-000Lup-HP for ged-emacs-devel@m.gmane.org; Thu, 01 Aug 2019 09:14:34 +0200 Original-Received: from localhost ([::1]:46150 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ht5IH-0007vd-Gb for ged-emacs-devel@m.gmane.org; Thu, 01 Aug 2019 03:14:33 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38496) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ht5Hd-0007tR-FV for emacs-devel@gnu.org; Thu, 01 Aug 2019 03:13:56 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ht5Hc-0003dJ-F1 for emacs-devel@gnu.org; Thu, 01 Aug 2019 03:13:53 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:46804) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ht5Hc-0003cr-9L; Thu, 01 Aug 2019 03:13:52 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 279311626FE; Thu, 1 Aug 2019 00:13:50 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id d9_6MDjaQ5l4; Thu, 1 Aug 2019 00:13:49 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 6BC811626FF; Thu, 1 Aug 2019 00:13:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id IIrC8Frdd4jp; Thu, 1 Aug 2019 00:13:49 -0700 (PDT) Original-Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 291911626FE; Thu, 1 Aug 2019 00:13:49 -0700 (PDT) In-Reply-To: Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 131.179.128.68 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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:239085 Archived-At: This is a multi-part message in MIME format. --------------4B5327557E4230871760B65C Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Richard Stallman wrote: > The doc string of lognot should explain what it does with large integers. I installed the attached patch to make that clearer. --------------4B5327557E4230871760B65C Content-Type: text/x-patch; name="0001-Clarify-lognot-bignum.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="0001-Clarify-lognot-bignum.patch" >From 495d0667fcf4df9f10c261684162c64f08aadd71 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Wed, 31 Jul 2019 06:56:14 -0700 Subject: [PATCH] Clarify (lognot bignum) * doc/lispref/numbers.texi (Bitwise Operations): Say that (= (lognot n) (- -1 n)). --- doc/lispref/numbers.texi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/doc/lispref/numbers.texi b/doc/lispref/numbers.texi index cae8babcb4..0c71387a8a 100644 --- a/doc/lispref/numbers.texi +++ b/doc/lispref/numbers.texi @@ -1072,7 +1072,8 @@ Bitwise Operations @defun lognot integer This function returns the bitwise complement of its argument: the @var{n}th bit is one in the result if, and only if, the @var{n}th bit is zero in -@var{integer}, and vice-versa. +@var{integer}, and vice-versa. The result equals @minus{}1 @minus{} +@var{integer}. @example (lognot 5) -- 2.17.1 --------------4B5327557E4230871760B65C--