Mar 25, 2025

    // Both indexes are screen selector, as each new screen adds one mask.
    const auto mask = matrix[selector][selector];

    // Merge incremented selector, current sieve, and new fingerprint.
    sieve = bit_or
    (
        shift_left(selector, screen_bits),
        bit_and
        (
            selector_mask,
            bit_or
            (
                bit_and(print, mask),
                bit_and(sieve, bit_not(mask))
            )
        )
    );