Please, could one of those who see the bug check if the following patch fixes
it or not ?
Thanks
Luc
===================================================================
--- src/main/java/org/apache/commons/math/util/FastMath.java (révision
1073250)
+++ src/main/java/org/apache/commons/math/util/FastMath.java (copie de
travail)
@@ -3046,8 +3046,8 @@
rb = -(temp - ra - rb);
ra = temp;
- if (ra == 0 && (y < 0)) { // Fix up the sign so atan works correctly
- ra = -0.0;
+ if (ra == 0) { // Fix up the sign so atan works correctly
+ ra = copySign(0.0, y);
}
// Call atan
----- "luc maisonobe" <luc.maison...@free.fr> a écrit :
> ----- "Oliver Heger" <oliver.he...@oliver-heger.de> a écrit :
>
> > Am 23.02.2011 21:08, schrieb Luc Maisonobe:
> > > Le 23/02/2011 20:35, Simone Tripodi a écrit :
> > >> I wonder if the cause of the fails on my runs could be an
> Apple's
> > JVM bug...
> > >> Any idea?
> > >
> > > I think Sebastian encountered this bug with Windows XP.
> > >
> > > Luc
> >
> > I see the same problem on Windows 7 and JDK 1.5:
> >
> > Results :
> >
> > Failed tests:
> >
> > test1[3](org.apache.commons.math.util.FastMathStrictComparisonTest)
> >
> > Tests run: 2451, Failures: 1, Errors: 0, Skipped: 1
> >
> > Here is my setup:
> > Apache Maven 2.2.1 (r801777; 2009-08-06 21:16:01+0200)
> > Java version: 1.5.0_21
> > Java home: C:\Program Files\Java\jdk1.5.0_21\jre
> > Default locale: de_DE, platform encoding: Cp1252
> > OS name: "windows 7" version: "6.1" arch: "x86" Family: "windows"
> >
> > With JDK 1.6 I can build successfully. So it seems to be a JDK
> > issue(?).
>
> I think so.
> One should also be aware that the error is at a discontinuity.
> Basically, this test computes atan2(y, x) with y being almost 0
> (slightly positive) and x being a very large negative number. If y was
> exactly 0 and x was exactly NEGATIVE_INFINITY, then the correct result
> would be either +PI or -PI. Here, due to the signs of x and y, the
> result should be +PI and it is -PI which is the same modulo 2PI.
>
> So it is not a completely absurd result.
>
> Luc
>
> >
> > Oliver
> >
> > >
> > >> Simo
> > >>
> > >> http://people.apache.org/~simonetripodi/
> > >> http://www.99soft.org/
> > >>
> > >>
> > >>
> > >> On Wed, Feb 23, 2011 at 7:03 PM, Jörg
> > Schaible<joerg.schai...@gmx.de> wrote:
> > >>> Hi Luc,
> > >>>
> > >>> Luc Maisonobe wrote:
> > >>>
> > >>>> Tag:
> > >>>>
> >
> http://svn.apache.org/repos/asf/commons/proper/math/tags/MATH_2_2_RC3/
> > >>>>
> > >>>> Distributions: http://people.apache.org/~luc/math-2.2-RC3/
> > >>>>
> > >>>> Maven artifacts:
> > http://people.apache.org/~luc/math-2.2-RC3/maven/
> > >>>>
> > >>>> Documentation bundled with the binary distribution:
> > >>>> http://people.apache.org/~luc/math-2.2-RC3/docs/
> > >>>>
> > >>>> Output of maven:site run against the source distribution:
> > >>>> http://people.apache.org/~luc/math-2.2-RC3/site/
> > >>>>
> > >>>> Clirr report:
> > >>>>
> > http://people.apache.org/~luc/math-2.2-RC3/site/clirr-report.html
> > >>>>
> > >>>> Release notes:
> > >>>> http://people.apache.org/~luc/math-2.2-RC3/RELEASE-NOTES.txt
> > >>>>
> > >>>> Votes, please. This vote will close in 72 hours,
> > 2011-02-26T12:00:00 UTC
> > >>>>
> > >>>> [ ] +1 Release these artifacts
> > >>>> [ ] +0 OK, but...
> > >>>> [ ] -0 OK, but really should fix...
> > >>>> [ ] -1 I oppose this release because...
> > >>>
> > >>> +1
> > >>>
> > >>> I've tested the source distribution and can build and run all
> > tests
> > >>> flawlessly with M3 using Sun JDK 1.5 + 1.6, IMB JDK 1.5 + 1.6
> and
> > OpenJDK
> > >>> 1.6. However, I am running also on Linux/AMD64 architecture.
> > >>>
> > >>> Cheers,
> > >>> Jörg
> > >>>
> > >>>
> > >>>
> >
> ---------------------------------------------------------------------
> > >>> To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org
> > >>> For additional commands, e-mail: dev-h...@commons.apache.org
> > >>>
> > >>>
> > >>
> > >>
> >
> ---------------------------------------------------------------------
> > >> To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org
> > >> For additional commands, e-mail: dev-h...@commons.apache.org
> > >>
> > >
> > >
> > >
> >
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> > >
> >
> >
> >
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