How getRowTotalInclTax() is calculated for magento cart page

Question

I am facing a problem in which row total of products are not taking special price for some products. I need to check the calculation from where it is calculated.

Anyone who knows the file in which it is calculated.

Answer 1

This value calculated in app\code\core\Mage\Tax\Model\Sales\Total\Quote\Subtotal.php Depends on selected algorithm, it use

 protected function _processItem($item, $taxRequest)
{
    switch ($this->_config->getAlgorithm($this->_store)) {
        case Mage_Tax_Model_Calculation::CALC_UNIT_BASE:
            $this->_unitBaseCalculation($item, $taxRequest);
            break;
        case Mage_Tax_Model_Calculation::CALC_ROW_BASE:
            $this->_rowBaseCalculation($item, $taxRequest);
            break;
        case Mage_Tax_Model_Calculation::CALC_TOTAL_BASE:
            $this->_totalBaseCalculation($item, $taxRequest);
            break;
        default:
            break;
    }
    return $this;
}

So, check the function that is used in your case. Also you can search for this row:

$item->setRowTotalInclTax($taxSubtotal);