Hi,
Hi Jarno,
Thanks a lot for the information.
Well, it does work if the values of are of upto 2 decimal places.
But the problem is my stylesheet is a generic one and is
being applied to
different XML files. The other XML may contain values upto 3
or 4 decimal
places.
So I can't use a value of 100 for multiplication and division.
But your reply definately has given me an idea, how to achieve it.
I am planning to count the digits after decimal and then apply
multiplication and
division accordingly.
Count the maximum number of decimal places and then use that as the factor?
Sure, that'll probably work. However, in the end you have to just accept that
fact that XPath 1.0 uses floating-point numbers and that they can sometimes
give you unexpected results.
Cheers,
Jarno
Any other idea?
Arun
From: <Jarno(_dot_)Elovirta(_at_)nokia(_dot_)com>
Reply-To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
To: <xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com>
Subject: RE: [xsl] sum() function giving strange result
Date: Tue, 14 Dec 2004 08:34:45 +0200
Hi,
The sum funciton is giving some strange result.
Xml :-
<documents>
<value>10.11</value>
<value>20.22</value>
<value>30.33</value>
<value>40.44</value>
<value>50.55</value>
<value>10.11</value>
<value>20.22</value>
</documents>
XSL :-
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:exsl="urn:schemas-microsoft-com:xslt"
extension-element-prefixes="exsl">
<xsl:variable name="SubTotals">
<xsl:for-each select="/documents/value">
<value><xsl:value-of select="." /></value>
</xsl:for-each>
</xsl:variable>
<xsl:template match="/">
<xsl:apply-templates select="documents/value" />
</xsl:template>
<xsl:template match="value">
<xsl:variable name="Position" select="position()" />
<xsl:value-of
select="sum(exsl:node-set($SubTotals)/value[position()
< $Position])" /><br />
</xsl:template>
</xsl:stylesheet>
The result :-
0
10.11
30.33
60.66
101.1
151.64999999999998
161.76
I am worried about the output 151.64999999999998. Why is it
outputting this
value?
Because XPath uses a floating-point numbers
<http://www.w3.org/TR/xpath#numbers>.
I am expecting to be upto 2 decimal places or 1 decimal places.
Well I can mask it upto 2 decimal places but I do not have a
liberty to do
that.
How about
<xsl:variable name="SubTotals">
<xsl:for-each select="/documents/value">
<value>
<xsl:value-of select=". * 100" />
</value>
</xsl:for-each>
</xsl:variable>
...
<xsl:template match="value">
<xsl:variable name="Position" select="position()" />
<xsl:value-of
select="sum(exsl:node-set($SubTotals)/value[position()
< $Position]) div 100" />
<br />
</xsl:template>
Seems to give the expecter result.
0
10.11
30.33
60.66
101.1
151.65
161.76
Cheers,
Jarno
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