From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10478 invoked by alias); 6 Nov 2002 20:29:21 -0000 Mailing-List: contact gsl-discuss-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gsl-discuss-owner@sources.redhat.com Received: (qmail 10461 invoked from network); 6 Nov 2002 20:29:20 -0000 Received: from unknown (HELO bellerophon.lanl.gov) (128.165.59.112) by sources.redhat.com with SMTP; 6 Nov 2002 20:29:20 -0000 Received: from bellerophon.lanl.gov (IDENT:1CZOPPeHopqziLmVvUzDS/esurzfuXCz@bellerophon.lanl.gov [127.0.0.1]) by bellerophon.lanl.gov (8.11.6/8.11.6) with ESMTP id gA6KaNn03804 for ; Wed, 6 Nov 2002 13:36:23 -0700 Subject: expint_scaled (was Re: gsl-1.2) From: Gerard Jungman To: gsl-discuss@sources.redhat.com Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Wed, 06 Nov 2002 13:24:00 -0000 Message-Id: <1036614983.3473.23.camel@bellerophon.lanl.gov> Mime-Version: 1.0 X-SW-Source: 2002-q4/txt/msg00117.txt.bz2 Regarding message inserted in specfunc/TODO file: > From: "Alexander Babansky" > To: "Brian Gough" > > Hi Brian, > May I suggest you to add another function to gsl-1.2 ? > It's a modified Ei(x) function: > > Em(x)=exp(-x)*Ei(x); Scaled versions of all exponential integrals now implemented and in CVS. See gsl_sf_expint.h for descriptions. Tests work for me, although test tolerances may need to be tweaked on other platforms. -- G. Jungman