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xslt_power_series.xsl
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xslt_power_series.xsl
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<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template name="power_series">
<xsl:param name="x_value"/>
<xsl:param name="numerator"/>
<xsl:param name="remaining_iterations"/>
<xsl:param name="demoninator_fak"/>
<xsl:param name="i"/>
<xsl:variable name="term">
<xsl:choose>
<xsl:when test="$i = 0">1</xsl:when>
<xsl:otherwise><xsl:value-of select="$numerator div $demoninator_fak"/></xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:choose>
<xsl:when test="$remaining_iterations = 1"><xsl:value-of select="$term"/></xsl:when>
<xsl:otherwise>
<xsl:variable name="recursive_ret">
<xsl:call-template name="power_series">
<xsl:with-param name="i" select="$i + 1"/>
<xsl:with-param name="x_value" select="$x_value"/>
<xsl:with-param name="remaining_iterations" select="$remaining_iterations - 1"/>
<xsl:with-param name="demoninator_fak" select="$demoninator_fak * ($i+1)"/>
<xsl:with-param name="numerator" select="$numerator * $x_value"/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="$term + $recursive_ret"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="/">
<xsl:variable name="e_power_pi">
<xsl:call-template>
<xsl:with-param name="i" select="0"/>
<xsl:with-param name="x_value">3.14159265358979323846</xsl:with-param>
<xsl:with-param name="remaining_iterations" select="40"/>
<xsl:with-param name="numerator" select="1"/>
<xsl:with-param name="demoninator_fak" select="1"/>
</xsl:call-template>
</xsl:variable>
<calc><xsl:value-of select="$e_power_pi"/></calc>
</xsl:template>
</xsl:stylesheet>