From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32679 invoked by alias); 13 Jun 2007 17:53:04 -0000 Received: (qmail 32639 invoked by uid 48); 13 Jun 2007 17:52:54 -0000 Date: Wed, 13 Jun 2007 17:53:00 -0000 Message-ID: <20070613175254.32638.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/32180] Paranoia UCB GSL TestFloat libm tests fail - accuracy of recent gcc math poor In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "kargl at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2007-06/txt/msg01034.txt.bz2 ------- Comment #18 from kargl at gcc dot gnu dot org 2007-06-13 17:52 ------- > The libm library is the least accurate and on average the fastest; though not > fastest for every function instance. The most accurate is always CRLibm, > sometimes it is fastest. The MPFR library is second most accurate and from 50 > to over 300 times slower than CRLibm. You've shown nothing to validate that crlibm is more accurate than mpfr. So how did you do this measurement? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32180