Method roundTotalAmount

/**
 * This is a final cart function
 * It is called roundTotalAmount() because of backward compatibility
 * but is the place to do last checks in cart
 *
 */
public function roundTotalAmount()
{
    $calc = new PhocacartCartCalculation();
    $calc->setType($this->type);
    $this->shipping['costs'] = isset($this->shipping['costs']) ? $this->shipping['costs'] : 0;
    $this->payment['costs'] = isset($this->payment['costs']) ? $this->payment['costs'] : 0;
    // 1) CORRECT TOTAL ITEMS (Rounding), CORRECT CURRENCY TOTAL ITEMS (Rounding for each item)
    $calc->correctTotalItems($this->total, $this->shipping['costs'], $this->payment['costs']);
    // 2) MAKE TAX RECAPITULATION and correct total by tax recapitulation if asked
    $calc->taxRecapitulation($this->total[0], $this->shipping['costs'], $this->payment['costs']);
    // 3) CORRECT TOTAL ITEMS (Rounding), CORRECT CURRENCY TOTAL ITEMS (Rounding for each item) - AGAIN WHEN TOTAL CHANGED BY TAX RECAPITULATION
    $options = array();
    $options['brutto_currency_set'] = 1;
    // Brutto currency exists yet, so don't create it again from "brutto * currencyRating"
    $calc->correctTotalItems($this->total, $this->shipping['costs'], $this->payment['costs'], $options);
    // 4) ROUND TOTAL AMOUNT IF ASKED (e.g. 95.67 => 96)
    $calc->roundTotalAmount($this->total[0]);
    // ROUNDING VS: TRCROUNDING
    //          	NETTO		(Payment,Shipping incl. Tax)	Rounding	Brutto
    // Rounding TC:	1370.79 + 	25.94 + 						0.14 = 		1396,87
    // Rounding: 	1370.83 + 	25.94 + 						0.10 = 		1396,87
    // 0.14 - 0.10 = 0.04
    //				1370.79 + 0.10 + 0.04 + 25.94 = 1396,87
}