不知道您将要进行的确切操作是什么，但是我想您会用伪代码进行长除法，如下所示：

dividend = abs(dividend)
divisor = abs(divisor)
if divisor == 0,
    barf
remainder = dividend
next_multiple = divisor

do
    multiple = next_multiple
    next_multiple = left_shift(multiple, 1)
while next_multiple <= remainder && next_multiple > multiple

while multiple >= divisor,
    if multiple <= remainder,
        remainder = remainder - multiple
    multiple = right_shift(multiple, 1)

要实际计算商（或至少是其绝对值），最后一部分将是这样的：

quotient = 0
while multiple >= divisor,
    quotient = left_shift(quotient, 1);
    if multiple <= remainder,
        remainder = remainder - multiple
        quotient = quotient + 1
    multiple = right_shift(multiple, 1)

这些都没有经过测试，并且可能充满错误。