samedi 20 août 2016

Can an LSFR output bit be approximated by popcount( on taped bits )?

Does this equation hold ?

lfsr_out_bit == parity(subset(state_bits)) == popcnt(state_bits & tap_mask) & 1

where tap_mask/state_bits is a mask which has 1-bit where taps are and 0-bit on all other bits.




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