From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=0.3 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE,RDNS_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 Received: (qmail 30262 invoked from network); 18 Mar 2020 08:41:45 -0000 Received-SPF: pass (minnie.tuhs.org: domain of minnie.tuhs.org designates 45.79.103.53 as permitted sender) receiver=inbox.vuxu.org; client-ip=45.79.103.53 envelope-from= Received: from unknown (HELO minnie.tuhs.org) (45.79.103.53) by inbox.vuxu.org with ESMTP; 18 Mar 2020 08:41:45 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 3A4789D76F; Wed, 18 Mar 2020 18:41:41 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 10ED09CD77; Wed, 18 Mar 2020 18:41:10 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 1138E9CD77; Wed, 18 Mar 2020 18:41:08 +1000 (AEST) Received: from freefriends.org (freefriends.org [96.88.95.60]) by minnie.tuhs.org (Postfix) with ESMTPS id 1BE219CD75 for ; Wed, 18 Mar 2020 18:41:06 +1000 (AEST) X-Envelope-From: arnold@skeeve.com Received: from freefriends.org (freefriends.org [96.88.95.60]) by freefriends.org (8.14.7/8.14.7) with ESMTP id 02I8ekFY013332 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Mar 2020 02:40:47 -0600 Received: (from arnold@localhost) by freefriends.org (8.14.7/8.14.7/Submit) id 02I8ekkF013331; Wed, 18 Mar 2020 02:40:46 -0600 From: arnold@skeeve.com Message-Id: <202003180840.02I8ekkF013331@freefriends.org> X-Authentication-Warning: frenzy.freefriends.org: arnold set sender to arnold@skeeve.com using -f Date: Wed, 18 Mar 2020 02:40:46 -0600 To: tuhs@tuhs.org, dave@horsfall.org References: <202003132331.02DNVaxN061501@tahoe.cs.Dartmouth.EDU> <7ec47fd97b1a3d383ffed428f21f5287@firemail.cc> In-Reply-To: User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: [TUHS] The most surprising Unix programs X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Dave Horsfall wrote: > On Tue, 17 Mar 2020, ca6c@firemail.cc wrote: > > > There is something sexy about reverse Polish notation. I really do > > encourage everyone reading this to try dc as their "desk calculator" for > > some time. > > I've been using my trusty HP-42S for so long that I can hardly remember > how to use a "normal" calculator :-) This might interest you: https://github.com/arnoldrobbins/hp Originally written in Ratfor for the Georgia Tech Software Tools Subsystem and ported to C by yours truly in the mid-80s. I've kept it up to date since then and use it almost daily. Enjoy, Arnold