<!-- Loop Example: Computing Prime Numbers
     GPL (c) Oliver Becker, 2000-07-01
     obecker@informatik.hu-berlin.de
-->
<xslt:transform xmlns:loop="http://informatik.hu-berlin.de/loop" xmlns:xslt="http://www.w3.org/1999/XSL/Transform" version="1.0">

<xslt:output method="text" />

<xslt:param name="bound" select="1000" />

<xslt:template match="/">
   <xslt:text />Prime Numbers (2 - <xslt:value-of select="$bound" />
   <xslt:text>)
2</xslt:text>

   <loop:for name="i" from="3" to="$bound" step="2">
      <xslt:variable name="j" select="2" />
      <xslt:variable name="is-prime">
         <loop:while test="$j*$j &lt;= $i">
            <loop:do>
               <xslt:if test="$i mod $j = 0">.</xslt:if>
            </loop:do>
            <loop:update name="j" select="$j+1" />
         </loop:while>
      </xslt:variable>
      <xslt:if test="$is-prime=''">
         <xslt:text />, <xslt:value-of select="$i" />
      </xslt:if>
   </loop:for>
   <xslt:text>
</xslt:text>
</xslt:template>

</xslt:transform>