From owner-cvs-src@FreeBSD.ORG Wed Nov 30 12:48:24 2005 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4ED7D16A41F; Wed, 30 Nov 2005 12:48:24 +0000 (GMT) (envelope-from bde@zeta.org.au) Received: from mailout1.pacific.net.au (mailout1.pacific.net.au [61.8.0.84]) by mx1.FreeBSD.org (Postfix) with ESMTP id A554343D64; Wed, 30 Nov 2005 12:48:23 +0000 (GMT) (envelope-from bde@zeta.org.au) Received: from mailproxy1.pacific.net.au (mailproxy1.pacific.net.au [61.8.0.86]) by mailout1.pacific.net.au (8.13.4/8.13.4/Debian-3) with ESMTP id jAUCj1mh029454; Wed, 30 Nov 2005 23:48:16 +1100 Received: from katana.zip.com.au (katana.zip.com.au [61.8.7.246]) by mailproxy1.pacific.net.au (8.13.4/8.13.4/Debian-3) with ESMTP id jAUCb4xg022653; Wed, 30 Nov 2005 23:37:04 +1100 Date: Wed, 30 Nov 2005 23:37:03 +1100 (EST) From: Bruce Evans X-X-Sender: bde@delplex.bde.org To: Bruce Evans In-Reply-To: <200511300456.jAU4unoE093174@repoman.freebsd.org> Message-ID: <20051130233059.G38877@delplex.bde.org> References: <200511300456.jAU4unoE093174@repoman.freebsd.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/lib/msun/src e_expf.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Nov 2005 12:48:24 -0000 On Wed, 30 Nov 2005, Bruce Evans wrote: > Modified files: > lib/msun/src e_expf.c > Log: > ... The end result is > that expf() is now perfectly rounded (to nearest) except in 52561 cases > instead of except in 67027 cases, and the maximum error is 0.5013 ulps > instead of 0.5023 ulps. Oops, this is only for i386 where there is considerable extra precision. On A64, the maximum error actually mysteriously increased a little (to 0.9101 ulps), and there are a lot more imperfectly rounded cases (17928157 now). The algorithm is only supposed to give < 1 ulps. Bruce