[pmwiki-users] MarkupExprPlus calculating with fractions

Martin Kerz mkerz at me.com
Sun Sep 8 05:42:26 CDT 2013


Okay, in markupexprplus.php I changed line 176 to just give back the variable $expr without doing the eval() stuff.

i.e. from

---
return $expr ? eval("return 0 + ($expr);") : '';
---

to

---
return $expr;
---

In my example:

---
:U:1
:K:0.5

{(add {$:U} {$:K})}:)
---

I now get 

---
1)+(0,5
---

without producing an error. As I see it, pmwiki somehow changes the "." to a ",". That might have something to do with my (German) locale. Can I somehow modify the eval() part to get the correct value(s)?

Any tip would be helpful. Thanks a lot.

Martin


On 08 Sep, 2013,at 08:54 AM, Martin Kerz <mkerz at me.com> wrote:

> Okay, I see. There must be something wrong with my installation then, because with the exact same code, I get a
> 
> Parse Error in /pmwiki/cookbook/markupexprplus.php(176) : eval()'d code on line 1
> 
> Do you have any idea, what might be wrong here? Unfortunately it is (Murphy's law ;-)) 1) mission and time critical and 2) the only bug left. 
> 
> Martin
> 
> On 08 Sep, 2013,at 12:13 AM, Petko Yotov <5ko at 5ko.fr> wrote:
> 
>> Martin Kerz writes:
>>> it seems, that it's not possible to calculate with fractions
>>> using MarkupExprPlus. 
>> 
>> On the page http://www.pmwiki.org/wiki/Cookbook/MarkupExprPlus you can see 
>> that operations with decimal numbers are correct.
>> 
>> {(add 0.5 4.2 5.9)} correctly prints 10.6
>> 
>> Petko
>> 
>>> I want to do 
>>> (:Sum:{(add {$:U} {$:K})}:)
>>> It works just fine with integers.
>>> Whenever I use a decimal fraction, like 
>>> :U:0.5
>>> It produces an error.
>> 
>> I have no error with your code. Check if you have 0 'zero' and not O 'letter 
>> o'.
>> 
>> Petko
>> 
>> 
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>> pmwiki-users at pmichaud.com
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> 
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