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Alex Rivera
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I need to extract and decode the bits (idx, idx+1, ... idx+n_bits) from a given boost dynamic_bitset. I have created the following solution: boost::dynamic_bitset<> mybitset(...); // build mask 2^{idx+n_bits} - 2^{idx} const boost::dynamic_bitset<> mask(mybitset.size(), (1 << idx+n_bits) - (1 << idx)); // shift the masked result idx times and get long unsigned long u = ((mybitset & mask) >> idx ).to_ulong(); It works well, but as this code is critical for the performance of my application, I am curious if there exists a better way to achieve this?
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