From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24051 invoked by alias); 30 Apr 2002 22:24:40 -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 23957 invoked from network); 30 Apr 2002 22:24:33 -0000 Received: from unknown (HELO postal1.lbl.gov) (128.3.7.82) by sources.redhat.com with SMTP; 30 Apr 2002 22:24:33 -0000 Received: from postal1.lbl.gov (localhost [127.0.0.1]) by postal1.lbl.gov (8.11.2/8.11.2) with ESMTP id g3UMOWY15928 for ; Tue, 30 Apr 2002 15:24:32 -0700 (PDT) Received: from lbl.gov (fjmolina.localdomain.dhcp.lbl.gov [131.243.227.252]) by postal1.lbl.gov (8.11.2/8.11.2) with ESMTP id g3UMOWT15905; Tue, 30 Apr 2002 15:24:32 -0700 (PDT) Message-ID: <3CCF1B47.3FE2F052@lbl.gov> Date: Tue, 31 Dec 2002 09:55:00 -0000 From: Francisco J Molina Organization: Lawrence Berkeley National Laboratory X-Accept-Language: en MIME-Version: 1.0 To: gsl-discuss@sources.redhat.com, fjmolina@lbl.go Subject: negative absolute error given by qag? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-SW-Source: 2002/txt/msg00508.txt.bz2 I am using the function gsl_integration_qag Is it possible that this function returns an absolute error ( abserr ) that is negative. I have been reading the code of qag.c and that seems to be the case. Anyone could confirm this? From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24051 invoked by alias); 30 Apr 2002 22:24:40 -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 23957 invoked from network); 30 Apr 2002 22:24:33 -0000 Received: from unknown (HELO postal1.lbl.gov) (128.3.7.82) by sources.redhat.com with SMTP; 30 Apr 2002 22:24:33 -0000 Received: from postal1.lbl.gov (localhost [127.0.0.1]) by postal1.lbl.gov (8.11.2/8.11.2) with ESMTP id g3UMOWY15928 for ; Tue, 30 Apr 2002 15:24:32 -0700 (PDT) Received: from lbl.gov (fjmolina.localdomain.dhcp.lbl.gov [131.243.227.252]) by postal1.lbl.gov (8.11.2/8.11.2) with ESMTP id g3UMOWT15905; Tue, 30 Apr 2002 15:24:32 -0700 (PDT) Message-ID: <3CCF1B47.3FE2F052@lbl.gov> Date: Tue, 30 Apr 2002 18:07:00 -0000 From: Francisco J Molina Organization: Lawrence Berkeley National Laboratory X-Accept-Language: en MIME-Version: 1.0 To: gsl-discuss@sources.redhat.com, fjmolina@lbl.go Subject: negative absolute error given by qag? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-SW-Source: 2002-q2/txt/msg00135.txt.bz2 Message-ID: <20020430180700.CLCft72CREflng3WGWw96dkVQbJ9fhuIzzYTiW8dQrQ@z> I am using the function gsl_integration_qag Is it possible that this function returns an absolute error ( abserr ) that is negative. I have been reading the code of qag.c and that seems to be the case. Anyone could confirm this?