max_entries The filter size.
a size of 10 * expected entries gives a false-positive of around 0.01%
17* -> 0.001
29* -> 0.0001
Each entry takes 1, 4 or 8 bits depending on type
So, if 0.01% is acceptable and expected max entries is 100, use a filter
size of 1000.
return
return( new BloomFilterAddRemove4Bit( filter_size ));