From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: "Stefan Monnier " Newsgroups: gmane.emacs.help Subject: Re: Reading portions of large files Date: 27 Jan 2003 09:44:20 -0500 Organization: Yale University Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Message-ID: <5lznpm8xff.fsf@rum.cs.yale.edu> References: <5lbs2mdrxs.fsf@rum.cs.yale.edu> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1043681934 4889 80.91.224.249 (27 Jan 2003 15:38:54 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 27 Jan 2003 15:38:54 +0000 (UTC) Return-path: Original-Received: from monty-python.gnu.org ([199.232.76.173]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 18dBLZ-0001Gc-00 for ; Mon, 27 Jan 2003 16:38:53 +0100 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 18dAuX-0003nc-08 for gnu-help-gnu-emacs@m.gmane.org; Mon, 27 Jan 2003 10:10:57 -0500 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!logbridge.uoregon.edu!news.ycc.yale.edu!rum.cs.yale.edu!rum.cs.yale.edu Original-Newsgroups: gnu.emacs.help Original-Lines: 10 Original-NNTP-Posting-Host: rum.cs.yale.edu User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-Original-NNTP-Posting-Host: rum.cs.yale.edu X-Original-Trace: 27 Jan 2003 09:44:21 -0500, rum.cs.yale.edu Original-Xref: shelby.stanford.edu gnu.emacs.help:109451 Original-To: help-gnu-emacs@gnu.org X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1b5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Help: List-Post: List-Subscribe: , List-Archive: List-Unsubscribe: , Errors-To: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Xref: main.gmane.org gmane.emacs.help:5975 X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:5975 > think we only need 1 tag bit in the separate tag-bit array. Its > function is to indicate whether the corresponding memory word is an > integer or not. If not, then the remaining tag bits are found in the > word itself. And integer arithmetic can certainly be faster! Integer arithmetic performance is a complete non-issue in Emacs (and most other tagged programming languages, as a matter of fact). Stefan