I have to thank for your input.
The next problem I have is to choose which solution I take ;-)
All of them are working.

Thanx

----- Original Message ----- 
From: "Francis Norton" <francis@xxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, January 22, 2003 11:34 AM
Subject: Re:  calculating pow of numbers and a final sum


> Hi Andreas,
> 
> I think that this is one of those occasions wher you do need to use 
> recursion - I can't (at this time of morning) see any way of doing it 
> with a simple XPath maths expression, or even XPath numeric expressions 
> inside a loop.
> 
> Try something like this -
> 
> <xsl:stylesheet version="1.0" 
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
>     <xsl:output method="text"/>
>     <!-- case conversion variables -->
>     <xsl:variable name="abc">abcdefghijklmnopqrstuvwxyz</xsl:variable>
>     <xsl:variable name="ABC">ABCDEFGHIJKLMNOPQRSTUVWXYZ</xsl:variable>
>     <!-- kick off recursive transform -->
>     <xsl:template match="logging">
>         <xsl:apply-templates select="target[1]"/>
>     </xsl:template>
>     <!-- simple tail-end recursive transform -->
>     <xsl:template match="target">
>         <xsl:param name="base" select="1" />
>         public static final int <xsl:value-of select="translate(@name, 
> $abc, $ABC)" /> = <xsl:value-of select="$base" />;
>         <xsl:apply-templates select="following-sibling::target[1]">
>             <xsl:with-param name="base" select="$base * 2" />
>         </xsl:apply-templates>
>     </xsl:template>
> </xsl:stylesheet>
> 
> Using recursion to step through a sequence of elements, one by one, is 
> in fact a helpful in many cased where you need to perform arbitrary 
> cumulative operations which can't be done using numeric operators, 
> sum(), position() or xsl:number, for instance in reports.
> 
> Francis.
> 
> -- 
> "Never mind manoeuvre, go straight at 'em." - Admiral Horatio Nelson
> 
> 
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

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