Integers, Cont'd

• Largest value that can be represented is 2N - 1.

• For 32-bit word this is 4,294,967,295.

• Arithmetic with integers is exact, except:

  • When division results in remainder.
  • Result exceeds largest representable integer
    • e.g. 2  109 + 3  109 = overflow error

• Note multiplication by 2's can be achieved by left-shift, which is very fast (in C: "<<" operator).

Notes: