• @[email protected]
    link
    fedilink
    English
    21 month ago

    what’s the general rule for translating negatives from binary? did you just do like 17 - 2 • (-1) or something?

    • Yardy Sardley
      link
      fedilink
      English
      51 month ago

      I used what known as 2’s compliment. Take the complement (flip all the bits - here that would give you 01110 which is 14) then add 1.

      • @[email protected]
        link
        fedilink
        English
        11 month ago

        thanks for the explanation! could you express it as a NOT operation plus one? like is that how it would be processed at a low level?

        • @[email protected]
          link
          fedilink
          English
          2
          edit-2
          1 month ago

          My low level is a tad rusty from when I learned the C side in school, but if I recall the not operator resolves as a single Boolean (0 or 1 in true C), whereas compliment comes back as however many bits you put in - a not operation per bit.

          In C, the not operator is ! and the compliment operator is ~