In order to decode a file I must work with nibbles, so I have to do some byte shifting and-ing and or-ing. Because the files are large, around 10 Mb, speed really counts. I thought it would be faster if I could directly work on nibbles, but no such data type exists in VB. Could there be some way around? Btw I do the bit shifting by multiplying or dividing by powers of 2 as there's no shift operator as far as I know.




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