From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 21 Jun 2001 16:21:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 21 Jun 2001 16:20:51 -0400 Received: from mail.efore.fi ([62.236.103.42]:48132 "EHLO maxwell.efore.fi") by vger.kernel.org with ESMTP id ; Thu, 21 Jun 2001 16:20:40 -0400 Message-ID: <3B3256C2.D951B990@efore.fi> Date: Thu, 21 Jun 2001 23:19:14 +0300 From: Lauri Tischler X-Mailer: Mozilla 4.76 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Kai Henningsen CC: linux-kernel@vger.kernel.org Subject: Re: temperature standard - global config option? In-Reply-To: <3B32280A.ADC08780@efore.fi> <83JvUAC1w-B@khms.westfalen.de> Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Kai Henningsen wrote: > > lauri.tischler@efore.fi (Lauri Tischler) wrote on 21.06.01 in <3B32280A.ADC08780@efore.fi>: > > > Richard J Moore wrote: > > > > > > > 59.42886726469 ±2°C is obviously ludicrous, even if that's > > > > what my calculator gives me. I should instead write 59 ±2°C, since > > > > > > So, if I follow you argument then shouldn't you be writing 58 ±2°C or > > > should it be 60 ±2°C ? > > > > What it means is that whatever dingus measured the temperature, reported > > the temperature as 59C. > > Well, maybe. And maybe it reported the temperature as "76 units", where a > unit is approximately 0.69°C, and zero units are approximately 6.99°C, and > we happen to know the accuracy is 3 units. > > (That makes out to 59.43 ±2.07°C, or 57.36 to 61.50°C, whereas 59 ±2°C > works out to 57.00 to 61.00°C - they do overlap, but they're not the same. > Now you might not care - but then again, you might care Oh, shit. +-2C means NO decimals Any decimal you care to put there are meaningless. ..unless you do integration over extended period of time etc.. etc.. even then if your sensor only gives +-2C diff's ?? -- lauri.tischler@iki.fi * Man created god as His image * * Man has horrid imagination *