Get total price

[morp]

Hi all,

I'm customizing a payment module and I calculate the total price in this way:

 

$total_price=($product['price']+(($product['price']/100)*$vat_value))*$product['cart_quantity']

 

and then I handle voucher and shipping cost but I don't get the exact value because of the decimal value.

 

Is there any API to get the exact TOTAL price, then one than the payment modules get from the core?

 

 

thanks in advance