[jira] Resolved: (XALANJ-2226) Negative zero incorrectly formatted (maybe)

["Christine Li (JIRA)" <xa...@xml.apache.org>]

     [ http://issues.apache.org/jira/browse/XALANJ-2226?page=all ]
     
Christine Li resolved XALANJ-2226:
----------------------------------

    Resolution: Invalid

JDK 1.1 returns string -0.00 for (new DecimalFormat("#,##0.00")).format(-0.0)

In Java, although 0.0 == -0.0 , they are different double values. 

> Negative zero incorrectly formatted (maybe)
> -------------------------------------------
>
>          Key: XALANJ-2226
>          URL: http://issues.apache.org/jira/browse/XALANJ-2226
>      Project: XalanJ2
>         Type: Bug
>   Components: XPath-function
>     Versions: 2.7
>     Reporter: elharo
>     Priority: Minor
>  Attachments: fmt-no.xml, testOn-0.xsl
>
> This is based on OASIS Microsoft test case XSLTFunctions__testOn-0.00.  Here's the output from libxml and Xalan 
> ~/projects/xom/data/oasis-xslt-testsuite/tests/MSFT_Conformance_Tests/XSLTFunctions$ xsltproc testOn-0.xsl fmt-no.xml
> <DIV>0.00</DIV>
> ~/projects/xom/data/oasis-xslt-testsuite/tests/MSFT_Conformance_Tests/XSLTFunctions$ java5 -cp /Users/elharo/Downloads/xalan-j_2_7_0/xalan.jar org.apache.xalan.xslt.Process -IN fmt-no.xml -XSL testOn-0.xsl     
> <DIV>-0.00</DIV>
> libxml (and the expected test case output) may be correct here. Then again maybe not. The question is really what format-number(round(-.5), '#,##0.00') should return. However, this is tricky because it really depends normatively on what Java 1.1 did, and off the top of my head I'm not sure about that. What did 
> (new DecimalFormat("#,##0.00")).format(-0.0)
> return in Java 1.1? (Also, was it even possible to create negative 0 in Java 1.1? If so, how?)

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