## Re: [xsl] Function that reduces the number of digits to the right of the decimal point?

 Subject: Re: [xsl] Function that reduces the number of digits to the right of the decimal point? From: "Dimitre Novatchev dnovatchev@xxxxxxxxx" Date: Tue, 23 Jun 2020 16:26:14 -0000
OK, here is a correct one:

for \$pPrec in max((0, \$pPrecision))
return
floor(\$pNum*math:exp10(\$pPrec))    div     math:exp10(\$pPrec)

On Tue, Jun 23, 2020 at 9:12 AM Dimitre Novatchev <dnovatchev@xxxxxxxxx>
wrote:

> Something like:
>
> floor(\$pNum*math:exp10(\$pPrecision)) div math:exp10(\$pPrecision)
>
>
> Untested !!!!
>
> On Tue, Jun 23, 2020 at 7:28 AM Roger L Costello costello@xxxxxxxxx <
> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
>> Hi Folks,
>>
>> \$num is a variable holding a decimal value.
>>
>> \$desired-number-of-digits-after-decimal-point is a variable holding an
>> integer value.
>>
>> I want a function that reduces the number of digits to the right of the
>> decimal point in \$num according to the value specified in
>> \$desired-number-of-digits-after-decimal-point
>>
>> Example #1:
>> \$num = 42.366978
>> \$desired-number-of-digits-after-decimal-point = 2
>> The result of applying the function is: 42.36
>>
>> Example #2:
>> \$num = 42.366978
>> \$desired-number-of-digits-after-decimal-point = 0
>> The result of applying the function is: 42
>>
>> Below is one way to implement the function. Is there a better way? By
>> "better" I mean simpler, more correct.
>>
>> Also, is there a better name for the function?  By "better" I mean
>> shorter, more standardized. /Roger
>> -----------------------------------------------------
>> <xsl:function name="f:reduce-number-of-digits-after-decimal-point"
>> as="xs:string">
>>     <xsl:param name="num" as="xs:string" />
>>     <xsl:param name="desired-number-of-digits-after-decimal-point"
>> as="xs:integer" />
>>
>>     <xsl:variable name="whole-part" select="substring-before(\$num, '.')"/>
>>     <xsl:variable name="fraction-part" select="substring-after(\$num,
>> '.')"/>
>>     <xsl:variable name="reduced-fraction-part"
>> select="substring(\$fraction-part, 1,
>> \$desired-number-of-digits-after-decimal-point)"/>
>>     <xsl:choose>
>>         <xsl:when test="\$desired-number-of-digits-after-decimal-point gt
>> 0">
>>             <xsl:value-of select="concat(\$whole-part, '.',
>> \$reduced-fraction-part)"/>
>>         </xsl:when>
>>         <xsl:otherwise>
>>             <xsl:value-of select="\$whole-part"/>
>>         </xsl:otherwise>
>>     </xsl:choose>
>> </xsl:function>
>>
>>
>
>
> --
> Cheers,
> Dimitre Novatchev
> ---------------------------------------
> Truly great madness cannot be achieved without significant intelligence.
> ---------------------------------------
> To invent, you need a good imagination and a pile of junk
> -------------------------------------
> Never fight an inanimate object
> -------------------------------------
> To avoid situations in which you might make mistakes may be the
> biggest mistake of all
> ------------------------------------
> Quality means doing it right when no one is looking.
> -------------------------------------
> You've achieved success in your field when you don't know whether what
> you're doing is work or play
> -------------------------------------
> To achieve the impossible dream, try going to sleep.
> -------------------------------------
> Facts do not cease to exist because they are ignored.
> -------------------------------------
> Typing monkeys will write all Shakespeare's works in 200yrs.Will they
> write all patents, too? :)
> -------------------------------------
> Sanity is madness put to good use.
> -------------------------------------
> I finally figured out the only reason to be alive is to enjoy it.
>
>

--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they write
all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.