RE: [xsl] Unexpected Results with format-number()

Subject: RE: [xsl] Unexpected Results with format-number()
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Thu, 16 Aug 2007 22:58:34 +0100
Just to confirm, this is a bug introduced by the fix to this bug:

http://sourceforge.net/tracker/index.php?func=detail&aid=1729511&group_id=29
872&atid=397617

The original bug was that Saxon was calling BigDecimal.toString() and
relying on the result being in the JDK 1.4 format. Sun changed the format of
the output of this method in JDK 1.5, so Saxon switched to calling its own
DecimalValue.getStringValue() method instead; unfortunately this follows the
XPath rules by formatting 0.0 as "0" rather than "0.0", which the calling
method is not expecting.

I'll produce a revised patch in due course, probably next week.

Michael Kay
http://www.saxonica.com/ 

> -----Original Message-----
> From: Angela Williams [mailto:Angela.Williams@xxxxxxxxxxxxxxxxxx] 
> Sent: 16 August 2007 00:20
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Unexpected Results with format-number()
> 
> I've just noticed a difference in the way small numbers are 
> formatting.
> When I wrote this a few weeks ago, small numbers formatted 
> with the correct precision.  Now it seems the format string 
> is being ignored.
> 
> I believe I was using Saxon 8.8 when I first wrote the code. 
> I updated to Saxon 8.9.0.4 yesterday, but that may just be a 
> coincidence.
> 
> What am I missing?
> 
> Sample XML:
> <?xml version="1.0" encoding="UTF-8"?>
> <values>
>    <amt>-0.003000</amt>
>    <amt>-0.001500</amt>
>    <amt>0.003000</amt>
>    <amt>0.00</amt>
>    <amt>0</amt>
> </values>
> 
> Expected output:
> amt: [-0.003]  formatted-value: [-$0.00]
> amt: [-0.0015] formatted-value: [-$0.00] 
> amt: [0.003]   formatted-value: [$0.00] 
> amt: [0]       formatted-value: [$0.00] 
> amt: [0]       formatted-value: [$0.00] 
> 
> Actual output:
> amt: [-0.003]  formatted-value: [-$0]
> amt: [-0.0015] formatted-value: [-$0] 
> amt: [0.003]   formatted-value: [$0] 
> amt: [0]       formatted-value: [$0] 
> amt: [0]       formatted-value: [$0] 
> 
> Stylesheet:
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet
>   xmlns:xs="http://www.w3.org/2001/XMLSchema"; 
>   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
>   xmlns:fk="http://www.the401kcompany.com/functions"; 
>   version="2.0">
> 
>   <xsl:template match="/values">
>     <html>
>       <body>
>         <xsl:apply-templates select="amt" />
>       </body>
>     </html>
>   </xsl:template>
> 
>   <xsl:template match="amt">
>     <p>
>       <xsl:value-of select="fk:nbr-format(.)" />
>     </p>
>   </xsl:template>
> 
>   <xsl:function name="fk:nbr-format">
>     <xsl:param name="amt" as="xs:double" />
>     <xsl:variable name="picture" select="'$,.00'" />
>       amt:              [<xsl:value-of select="$amt" />]  
>       formatted-value:  [<xsl:value-of
> select="format-number(number($amt), string($picture))" />]   
>   </xsl:function>
> </xsl:stylesheet>
> 
> Thanks!
> Angela Williams
> Software Developer
> The 401k Company, A Charles Schwab Company
> 98 San Jacinto Blvd. ~ Suite 1100 ~ Austin, TX 78701
> Office: 512.344.1547 ~ Fax: 512.397.6656
> Angela.Williams@xxxxxxxxxxxxxxxxxx    

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