Mathematics Operators : power of - ^ - superior [Resolved]

Wednesday 15 October 2008 3:17:24 am

Are you sure?
Cause last time I checked 3*3*3 was somewhere around 27 :)

You'll need to do a custom template operator if you want it to be fully flexible.
But if you always use ^3, then something like this will do:

{def $in = 3
      $out = $in|mul( $in, $in )}
{$out}

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Wednesday 15 October 2008 4:10:03 am

Not that I know of, you could solve it in template if you want to, but performance wise it's not the best solution of course:

{def $in = 3
      $powerof = 3
      $out = $in}
{for 1 to $powerof as $counter}
    {set $out = $out|mul( $in )}
{/for}
{$out}

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Wednesday 15 October 2008 5:03:24 am

As far as I can see it's not used by any template operators, so your code there probably generates a debug warning that there is no template operator named pow.

But you can use a setting called PHPOperatorList in template.ini* to register the php pow** function:

[PHP]
PHPOperatorList[phppow]=pow

And use it like:

{def $nine = 3|phppow(3)}
{$nine}

* place the setting in settings/override/template.ini.append.php
** http://no2.php.net/pow

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Wednesday 15 October 2008 5:25:38 am

Ok, then it seems that PHPOperatorList can only take 1 parameter, so only suitable for really simple functions.

Updated the template solution above now, so it should work.

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Wednesday 15 October 2008 6:36:39 am

You have probably reached the ceiling of integer type*.
But that can probably be avoided if you fix your code to do what I showed above (you used the example from before I updated it).

* http://no.php.net/int

The size of an integer is platform-dependent, although a maximum value of about two billion is the usual value (that's 32 bits signed).

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Wednesday 15 October 2008 7:00:28 am

{def $DureeMois = 300
       $Taux = 0.055
       $MensualiteBas = $Taux|sum( 1 )
       $outValue = $MensualiteBas}

{for 1 to $DureeMois as $counter}
{set $outValue = $outValue|mul( $MensualiteBas )}
{/for}

{$outValue}

In the code you have(and I had earlier) it will (if it was 3^3) be:
3*3
9*9
= 81

Do that 'small' mistake 300 times and you end up with a very large number..

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