From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.help Subject: Re: The next exercise Date: Fri, 09 Dec 2022 20:33:51 +0000 Message-ID: <574c1ceba8ee790f5f45@heytings.org> References: <87tu24tmv6.fsf@web.de> <574c1ceba8d5f62d3c07@heytings.org> <87edt8tklz.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6248"; mail-complaints-to="usenet@ciao.gmane.io" Cc: help-gnu-emacs@gnu.org To: Michael Heerdegen Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Dec 09 21:34:22 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p3k4b-0001NU-At for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 09 Dec 2022 21:34:21 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p3k4D-0000md-5b; Fri, 09 Dec 2022 15:33:57 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p3k4B-0000mU-Tz for help-gnu-emacs@gnu.org; Fri, 09 Dec 2022 15:33:55 -0500 Original-Received: from heytings.org ([95.142.160.155]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p3k4A-00071c-AT for help-gnu-emacs@gnu.org; Fri, 09 Dec 2022 15:33:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1670618031; bh=KLY5wukcYdJ3oejtum5TAaA1CR+4/ygaXRiXfDKwYiA=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=EErIkkplwI/zD2Z+QcXV4dTBZqSnl35f3sQX4kfTvCmXLlyeqaNVJATV/2KYxv6AO oAcY/CCvMbcRokvG/RYHUq7I2+acbTgnL2bIGmpcmphd0qZ0VCJ2OKJ+DXHhK/N9Tj zWqxaBjpsBfyyV/0yYGZoO18sKravBXNU2jYxy0T4jjiZJzRpryLAZIUHtrVoQ1di9 TNiFh8BqiOq4S8vDpcuyUUmhTIgvFxucUfuqtXBQMlgUxoyobAy0MHT9059dmyEBLs 8uvODeS5KXI/1e7vuMB9Aa4VX7SoFjkADA8IpqYzPZ8TUHPujKU7Hk5XDHEiVvX2aF CXFZQRfkQng/Q== In-Reply-To: <87edt8tklz.fsf@web.de> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:141528 Archived-At: >> M-: (substring (number-to-string (expt 1001 1000)) 0 3) RET >> >> "271" > > Yes - correct! > > My expectation was that someone would try Emacs Calc. Because it can > compute the number exactly - all digits. > You asked for the first three digits, but of course expt also computes the number exactly: M-: (expt 1001 1000) RET But indeed: M-x calc RET 1001 RET 1000 RET ^