[xsl] Re: Function that reduces the number of digits to the right of the

Hi Folks,

Thank you for your excellent feedback!

Thank you Michael Kay for pointing out the round versus truncate issue. I asked 
my customer which they want (round or truncate) and they want the option of 
doing either. So I added a third argument to my function $round-or-truncate and 
now the function can do either. Here is the updated function which incorporates 
your suggestions:
--------------------------------------
<xsl:function name="f:reduce-number-of-digits-after-decimal-point">
    <xsl:param name="num" />
    <xsl:param name="desired-number-of-digits-after-decimal-point" 
as="xs:integer" />
    <xsl:param name="round-or-truncate" as="xs:string" />
    
    <xsl:choose>
        <xsl:when test="$round-or-truncate eq 'round'">
            <xsl:value-of select="round($num, 
$desired-number-of-digits-after-decimal-point)"/>
        </xsl:when>
        <xsl:when test="$round-or-truncate eq 'truncate'">
            <xsl:variable name="multiplication-factor" 
select="xs:integer(math:pow(10, 
$desired-number-of-digits-after-decimal-point))" as="xs:integer"/>
            <xsl:value-of select="($num*$multiplication-factor idiv 1) div 
$multiplication-factor" />
        </xsl:when>
        <xsl:otherwise>
            <xsl:value-of select="error(xs:QName('round-or-truncate'), 'Invalid 
value for $round-or-truncate')"/>
        </xsl:otherwise>
    </xsl:choose>
    
</xsl:function>
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