I know I've seen the answer to this here at some point, but I can't seem to find it.

Wong changed the way he calculated the true count from one edition of Professional Blackjack to another from rounding to truncating etc..

Does anyone know what method was used to compute the indices in the 1994 edition? I'm hoping that the answer is flooring. If the answer is truncating, then that would be ok as well, since I can then derive the flooring indices by decrementing the negative indices.