From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Newsgroups: gmane.emacs.help Subject: Re: (- 2.8 1.6) ; 1.1999999999999997 Date: Mon, 10 Feb 2020 22:31:14 +0100 Message-ID: <20200210213114.GA25704@tuxteam.de> References: <8736biywcn.fsf@ebih.ebihd> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="2fHTh5uZTiUOsy+g" Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="3427"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/1.5.21 (2010-09-15) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Feb 10 22:31:50 2020 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 1j1Gej-0000nv-Ug for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 10 Feb 2020 22:31:49 +0100 Original-Received: from localhost ([::1]:39840 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1Gei-0001ud-Va for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 10 Feb 2020 16:31:48 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41135) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1GeF-0001uN-Ud for help-gnu-emacs@gnu.org; Mon, 10 Feb 2020 16:31:21 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j1GeE-0002Ao-LW for help-gnu-emacs@gnu.org; Mon, 10 Feb 2020 16:31:19 -0500 Original-Received: from mail.tuxteam.de ([5.199.139.25]:45717) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1j1GeD-0001xZ-T0 for help-gnu-emacs@gnu.org; Mon, 10 Feb 2020 16:31:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tuxteam.de; s=mail; h=From:In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:To:Date; bh=QwIv/nS7HGQrMNWO3y33qgcRhTu3p9sy4rs92X4tzf0=; b=eXx6spFExUqknKkY1iMU35Q4Kl6DLTl32y13jyW8QO9OvYtG4MzGT8uUz11rfmnOpZwyMX0ImWiAjqIClYDcv2bDyavwlrbGEZo/xKhtp5A+qX8AYXbbJiE1JQNiQ2vBAxSnga7udyEjaUC/Qc1OoSq0ww3P7h014/zLVEk4qSIdC0F3GMdjBE/opIUNk+oCZvFVsW+NDcB+s4LozRAmTNZ9IIcYI752BJb5dyOQGGJYa649LIDEbk6ukoG42leH7FHH+2bRuCG7bxTadXBsl+Ryx4LGU4Rz8tyk1aKxF02V755FKmGcnauyeXrLmrSVbRuE3iYX7j0e+rdOvhm15Q==; Original-Received: from tomas by mail.tuxteam.de with local (Exim 4.80) (envelope-from ) id 1j1GeA-0006o9-HY for help-gnu-emacs@gnu.org; Mon, 10 Feb 2020 22:31:14 +0100 Content-Disposition: inline In-Reply-To: <8736biywcn.fsf@ebih.ebihd> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 5.199.139.25 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.help:122391 Archived-At: --2fHTh5uZTiUOsy+g Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Feb 10, 2020 at 10:18:48PM +0100, Emanuel Berg via Users list for t= he GNU Emacs text editor wrote: > What's this? >=20 > (- 2.8 1.6) ; 1.1999999999999997 >=20 > With the TI-84 Plus, >=20 > 2.8-1.6=3D1.2 >=20 > Normally I'm all pro-Lisp but here... Those numbers aren't exactly representable as binary fractions (2.8 =3D 14/5, 1.6 =3D 8/5). So things like this happen. It's not Lisp, but an artifact of the underlying representation (as binary "floats" with limited precision). Cheers -- tom=C3=A1s --2fHTh5uZTiUOsy+g Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEUEARECAAYFAl5By6IACgkQBcgs9XrR2kZcPACdGF0XGbd+FeNDUSAMqdiHzaOb 3xIAljqxRhs176qoJy4B6wKjzM7Fwv0= =YuPQ -----END PGP SIGNATURE----- --2fHTh5uZTiUOsy+g--