For example, if I have an int with a length of 32 bits, how do I store value A in the first 16 bits, then store value B in bits 17-24, and value C in bits 25-32? And how can I get these three values out of an int?
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Answer
Assuming that your values fit in the assigned bit counts, it’s just a question of shifting them to make an int
, and then unshifting and masking to get them back:
A = 34945 B = 49 C = 233 B_shift = 16 C_shift = 24 result = A + (B << B_shift) + (C << C_shift) print(result) resA = result & ((1 << B_shift) - 1) resB = (result >> B_shift) & ((1 << (C_shift - B_shift)) - 1) resC = result >> C_shift print(resA, resB, resC)