EXSLT - math:max

Implementer Page: math.max.html
Function Package: math.max.zip

Function Syntax

number math:max(node-set)

Template Syntax

<xsl:call-template name="math:max">
   <xsl:with-param name="nodes" select="node-set" />
</xsl:call-template>

The math:max function returns the maximum value of the nodes passed as the argument. The maximum value is defined as follows. The node set passed as an argument is sorted in descending order as it would be by xsl:sort with a data type of number. The maximum is the result of converting the string value of the first node in this sorted list to a number using the number function.

If the node set is empty, or if the result of converting the string values of any of the nodes to a number is NaN, then NaN is returned.

The math:max template returns a result tree fragment whose string value is the result of turning the number returned by the function into a string.

Implementations

The following XSLT processors support math:max:

4XSLT, from 4Suite. (version 0.12.0a3)
SAXON from Michael Kay (version 6.3)
jd.xslt from Johannes Döbler (version 1.0.9)
libxslt from Daniel Veillard; implementation by Thomas Broyer (version 1.0.19)
Xalan-J from Apache (version 2.4.D1)

Implementations of math:max are available in the following languages:

EXSLT Function (by Jeni Tennison)
XSLT Template (by Jeni Tennison)

Examples

Function

The following example shows how to use the math:max function:

Source

<values>
   <value>7</value>
   <value>11</value>
   <value>8</value>
   <value>4</value>
</values>

Stylesheet

<xsl:template match="values">
   <result>
      <xsl:text>Maximum: </xsl:text>
      <xsl:value-of select="math:max(value)" />
   </result>
</xsl:template>

Result

<result>Maximum: 11</result>

Template

The following example shows how to use the math:max template:

Source

<values>
   <value>7</value>
   <value>11</value>
   <value>8</value>
   <value>4</value>
</values>

Stylesheet

<xsl:template match="values">
   <result>
      <xsl:text>Maximum: </xsl:text>
      <xsl:call-template name="math:max">
         <xsl:with-param name="nodes"
                         select="value" />
      </xsl:call-template>
   </result>
</xsl:template>

Result

<result>Maximum: 11</result>