sum()- Takes a node-set as its argument and returns the sum of the value of each individual node after converting the values to a numeric type if possible. : sum « XSLT stylesheet « XML Tutorial

1. XML Tutorial
2. XSLT stylesheet
3. sum

File: Data.xml
<?xml version="1.0"?>
<numbers>
  <x>4</x>
  <y>3.2</y>
  <z>11</z>
</numbers>


File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0">
  <xsl:output method="xml" omit-xml-declaration="yes" />

  <xsl:template match="numbers">
    4 + 3.2 + 11 =
    <xsl:value-of select="sum(*)" />

  </xsl:template>

</xsl:stylesheet>

Output:


    4 + 3.2 + 11 =
    18.2