9-4. Unsigned Long Division
By “long division” we mean the division of a doubleword by a single word. For a 32-bit machine, this is
division, with the result unspecified in the overflow cases, including division by 0.
Some 32-bit machines provide an instruction for unsigned long division. Its full capability, however, gets little use, because only
division is accessible with most high-level languages. Therefore, a computer designer might elect to provide only
division, and would probably want an estimate of the execution time of a subroutine ...
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