which function calculate the price again when any item is removed from cart in magento -

which function calculate the price again when any item is removed from cart in magento -

which function calculate cost 1 time again when item removed cart in magento

please tell me function name , location in file

go app/code/core/mage/checkout/controllers/cartcontroller.php

find deleteaction()

now does.. remove item cart , redirect cart when cart reload again. shows phone call items , there respective price. cart calculate cost of presented items it

function magento