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Posted to commits@harmony.apache.org by "Alexey Varlamov (JIRA)" <ji...@apache.org> on 2007/03/12 11:15:09 UTC
[jira] Closed: (HARMONY-2773) [drlvm][jit][opt] negative zero is
handled as positive zero (by Jitrino.OPT)
[ https://issues.apache.org/jira/browse/HARMONY-2773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alexey Varlamov closed HARMONY-2773.
------------------------------------
Resolution: Fixed
Added the regression test added at r217161, closing.
> [drlvm][jit][opt] negative zero is handled as positive zero (by Jitrino.OPT)
> ----------------------------------------------------------------------------
>
> Key: HARMONY-2773
> URL: https://issues.apache.org/jira/browse/HARMONY-2773
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Environment: IA32/OPT/anyOS
> Reporter: Egor Pasko
> Assigned To: Alexey Varlamov
> Attachments: HARMONY-2773.patch
>
>
> consider the following testcase:
> class nan
> {
> public static void main(String[] args)
> {
> double a = -1.0d;
> double b = 0.0d;
> double c;
> double a2 = 1.0d;
> double b2 = -0.0d;
>
> c = a / b;
> if ( c == Double.NEGATIVE_INFINITY ) {
> System.out.println("test1: PASS");
> }else{
> System.out.println("test1: FAIL");
> }
>
> c = a2 / b2;
> if ( c == Double.NEGATIVE_INFINITY ) {
> System.out.println("test2: PASS");
> }else{
> System.out.println("test2: FAIL");
> }
> System.out.println(c);
> }
> }
> it fails on OPT, but passes on JET and Jrockit:
> > $HARMONY -showversion -Xem:jet nan
> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
> java version "1.5.0"
> pre-alpha : not complete or compatible
> svn = r487512, (Dec 15 2006), Linux/ia32/gcc 3.3.3, debug build
> http://incubator.apache.org/harmony
> test1: PASS
> test2: PASS
> -Infinity
> > $HARMONY -showversion -Xem:opt nan
> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
> java version "1.5.0"
> pre-alpha : not complete or compatible
> svn = r487512, (Dec 15 2006), Linux/ia32/gcc 3.3.3, debug build
> http://incubator.apache.org/harmony
> test1: FAIL
> test2: FAIL
> NaN
> > java -showversion nan
> java version "1.5.0"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
> BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-linux-ia32, R25.0.0-75, GC: System optimized over throughput (initial strategy singleparpar))
> test1: PASS
> test2: PASS
> -Infinity
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