nx_hamming.nx

nx_hamming.nx -- Hamming distance for equal-length byte sequences. Counts positions at which corresponding bytes differ. Applies ONLY to strings of equal length -- non-equal lengths are an error (return NX_HAMMING_LENGTH_MISMATCH sentinel). Useful when the substrate has already aligned the sequences (fixed-width tokens, error-correction codes, hashes-of-equal-bit-width, DNA k-mers of fixed k). Cross-modal: bytes of any signal (pixels, audio samples quantized to u8, code tokens, network packet headers). Idea-provenance (patent-clean): Hamming 1950 "Error detecting and error correcting codes" Bell System Technical Journal. genealogy_id: hamming_1950_error_detecting_codes lineage_id: hamming_distance_q10