Your message dated with message-id <20100713184531.10815.63133.mass-bugs-close@merkel.debian.org> and subject line gcj-4.3 removed from Debian unstable has caused the Debian Bug report #255525, regarding [PR 16122] gij - Incorrect result due to computations in extended precision on x86 to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@bugs.debian.org immediately.) -- 255525: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=255525 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
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- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: gij-3.3: Incorrect result due to computations in extended precision on x86
- From: Vincent Lefevre <vincent@vinc17.org>
- Date: Mon, 21 Jun 2004 18:06:58 +0200
- Message-id: <20040621160658.GA7415@greux.loria.fr>
Package: gij-3.3 Version: 1:3.3.4-1 Severity: normal Concerning the following Java source: ------------------------------------------------------------------ // $Id: test.java 3734 2004-06-21 15:36:52Z lefevre $ public class test { public static void main(String[] args) throws Exception { test t = new test(); t.doTest(); } volatile double x, y, z, d; public void doTest() { x = 9007199254740994.0; /* 2^53 + 2 */ y = 1.0 - 1/65536.0; z = x + y; d = z - x; System.out.println("z = " + z); System.out.println("d = " + d); } } ------------------------------------------------------------------ I've compiled it with "gcj -C test.java" (GCC 3.3.4). Both IBM's and Sun's JVM give the correct result: greux:~/wd/src/fp> /global/greux/lefevre/IBMJava2-131/jre/bin/java test z = 9.007199254740994E15 d = 0.0 greux:~/wd/src/fp> /usr/local/j2re1.4.1/bin/java test z = 9.007199254740994E15 d = 0.0 but not gij-wrapper: greux:~/wd/src/fp> /usr/bin/gij-wrapper-3.3 test z = 9.007199254740996E15 d = 2.0 gij-wrapper (or ... ?) should switch the FPU of the x86 processor (Pentium III in my case) to rounding in double precision to avoid the effect of the "double rounding" (you may find some information about this effect here: <http://www.srware.com/linux_numerics.txt>). -- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing') Architecture: i386 (i686) Kernel: Linux 2.6.6 Locale: LANG=POSIX, LC_CTYPE=en_US.ISO8859-1 Versions of packages gij-3.3 depends on: ii gcc-3.3-base 1:3.3.4-1 The GNU Compiler Collection (base ii libc6 2.3.2.ds1-13 GNU C Library: Shared libraries an ii libgcc1 1:3.3.4-1 GCC support library ii libgcj4 1:3.3.4-1 Java runtime library for use with ii zlib1g 1:1.2.1.1-3 compression library - runtime -- no debconf information
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- Cc: Sandro Tosi <morph@debian.org>
- Subject: gcj-4.3 removed from Debian unstable
- From: Sandro Tosi <morph@debian.org>
- Message-id: <20100713184531.10815.63133.mass-bugs-close@merkel.debian.org>
Version: 4.3.4-4+rm gcj-4.3 has been removed from Debian unstable: http://bugs.debian.org/577262 Closing its bugs with a Version higher than the last unstable upload. More information about this script at: http://git.debian.org/?p=users/morph/mass-bugs-close.git;a=blob_plain;f=README;hb=HEAD
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