From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2550 invoked by alias); 10 Jan 2008 12:39:03 -0000 Received: (qmail 2542 invoked by uid 22791); 10 Jan 2008 12:39:03 -0000 X-Spam-Check-By: sourceware.org Received: from mail.network-theory.co.uk (HELO mail.network-theory.co.uk) (66.199.228.187) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 10 Jan 2008 12:38:45 +0000 Date: Thu, 10 Jan 2008 12:39:00 -0000 Message-ID: <87prw9kg8c.wl%bjg@network-theory.co.uk> From: Brian Gough To: gsl-discuss@sourceware.org Subject: Re: constants update In-Reply-To: <1eaaa6d50801100216u1a204034k13699eb4d4b430af@mail.gmail.com> References: <200801091354.m09Dsgwj022136@amer.strw.leidenuniv.nl> <8A45541B-99EC-4628-93B2-7D37095C59C9@fhi-berlin.mpg.de> <1eaaa6d50801100216u1a204034k13699eb4d4b430af@mail.gmail.com> User-Agent: Wanderlust/2.14.0 (Africa) Emacs/22.1 Mule/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII X-Message-Mac: 539f53d48e6d65bc875800b5ec3004e1 Mailing-List: contact gsl-discuss-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gsl-discuss-owner@sourceware.org X-SW-Source: 2008-q1/txt/msg00017.txt.bz2 At Thu, 10 Jan 2008 11:16:24 +0100, Oliver Jennrich wrote: > I'm wondering if updating the constants without a possibility to > revert to an earlier version is a good idea. > > Would it be useful to have something like > > GSL_CONST_MKSA_SPEED_OF_LIGHT_2000 > GSL_CONST_MKSA_SPEED_OF_LIGHT_2006 > > and > > > GSL_CONST_MKSA_SPEED_OF_LIGHT > > to be either of the two, depending on a #define? In the end I decided that since these header files don't have any dependencies, it's simpler to let people keep a specific version in their own program if they really need it.