Rounding problem with product prices

Hi,

On a few of my products, I'm having a price rounding problem. The saved price is not the one input by the the user.

I configured one of them at 35€ (in price with tax), but when I save, it turns into 34.99999516 (FYI, tax is 19.6)

On the front end, it does appear as 35.00€. When I proceed to checkout, it still appears as 35.00, but when I'm transferred to the payment gateway, the amount charged is 34.99.

This happens with the hikashop systempay module (French banks), and not with the paypal module.

I'm guessing the systempay module doesn't round up the price the way the paypal module does. But since the price stored in database is 34.99999516, it seems to me the problem is with the tax calculation, and not with this payment module, right? Is there anyway to force hikashop to save Exactly the price with tax input by the merchant?

It's the only problem preventing me from launching my site

Thanks in advance.

Regards
Hikashop 2.2.2
Joomla 2.5

PS: I've posted this on an archived topic, not sure if I should have, so I created a new one... apologies for the mess

Hi,

The problem is with the systempay plugin which doesn't round the price correctly before sending it to the payment gateway.
It's normal that the price are stored like that. That's because of the tax calculation which is done based on the price without tax.
It needs to store the decimals so that it can properly sum the products/quantities/etc without loosing precision so that it is valid accounting-wise.

I guess that the line:
$amount = $order->cart->full_total->prices[0]->price_value_with_tax;

should be :
$amount = round($order->cart->full_total->prices[0]->price_value_with_tax,2);
in the file plugins/hikashoppayment/systempay/systempay.php

Please contact systempay's plugin provider so that they can fix the issue in the package they propose on their website once you test the change.

Hello,

As usual, awesome support
This works indeed. I'll test it a bit more before submitting this change to the plugin provider.

Regards,
Jeff