From owner-freebsd-java Sat Feb 15 7:18:14 2003 Delivered-To: freebsd-java@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 15E1137B401 for ; Sat, 15 Feb 2003 07:18:13 -0800 (PST) Received: from mgr4.xmission.com (mgr4.xmission.com [198.60.22.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5015943F3F for ; Sat, 15 Feb 2003 07:18:12 -0800 (PST) (envelope-from glewis@eyesbeyond.com) Received: from mail by mgr4.xmission.com with spam-scanned (Exim 3.35 #1) id 18k44x-0006B9-04 for java@freebsd.org; Sat, 15 Feb 2003 08:18:12 -0700 Received: from [207.135.128.145] (helo=misty.eyesbeyond.com) by mgr4.xmission.com with esmtp (Exim 3.35 #1) id 18k44w-0006AI-04; Sat, 15 Feb 2003 08:18:11 -0700 Received: (from glewis@localhost) by misty.eyesbeyond.com (8.11.6/8.11.6) id h1FFI2Q10863; Sun, 16 Feb 2003 01:48:02 +1030 (CST) (envelope-from glewis@eyesbeyond.com) X-Authentication-Warning: misty.eyesbeyond.com: glewis set sender to glewis@eyesbeyond.com using -f Date: Sun, 16 Feb 2003 01:48:02 +1030 From: Greg Lewis To: shudo@computer.org Cc: java@FreeBSD.ORG Subject: Re: Math.pow bug for jdk1.3.1-p8 ? Message-ID: <20030216014802.A10817@misty.eyesbeyond.com> References: <3E4C9DDD.4040204@gddsn.org.cn> <20030215.175421.1015281127.shudo@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20030215.175421.1015281127.shudo@localhost>; from shudo@computer.org on Sat, Feb 15, 2003 at 05:54:21PM +0900 X-Spam-Status: No, hits=-3.5 required=8.0 tests=IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES, SIGNATURE_SHORT_DENSE,SPAM_PHRASE_00_01,USER_AGENT, USER_AGENT_MUTT,X_AUTH_WARNING version=2.43 X-Spam-Level: Sender: owner-freebsd-java@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Sat, Feb 15, 2003 at 05:54:21PM +0900, shudo@computer.org wrote: > I could confirm __j__ieee754_pow() in libjava.so behaves wrong and one > in libjava_g.so works correctly. > > I also tried writing a test program which calls __j__ieee754_pow() and > linked the program with e_pow.o, w_sqrt.o, e_sqrt.o, s_fabs.o, > s_scalbn.o and s_copysign.o generated during compilation process of > JDK 1.3.1. The program produces the incorrect value (0, not 512). > > It is certain that there is a problem around fdlibm, FreeBSD's gcc > 2.95.4 or how the fdlibm compiled (compiler flags?). Sounds like its quite possibly due to problems with optimisation. Obviously, java_g uses no optimisation when compiling, whereas java (from the FreeBSD port) will use whatever optimisation people have set up to be used when compiling ports. -- Greg Lewis Email : glewis@eyesbeyond.com Eyes Beyond Web : http://www.eyesbeyond.com Information Technology FreeBSD : glewis@FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-java" in the body of the message