Enthuware

Could someone pls help me understand the concept of floor(e), ceiling(e), heigher(e) and lower(e) methods..

You may read the fundamental concept here: http://www.mathsisfun.com/sets/function ... iling.html
Besides the above, you may also go through the API description of these methods.

If there is a particular thing that you don't understand, let us know.

Thank you so much for your reply, the link is helpful.. I was confused with my own assumptions, the concept is clear now.. Thank you again.