leetcode 29. Divide Two Integers

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int divide(int dividend, int divisor) {if(dividend == INT32_MIN){    if(divisor == 1)return INT32_MIN;    if(divisor == -1) return INT32_MAX;}if(divisor == 0){    if(dividend > 0)return INT32_MAX;    if(dividend < 0)return INT32_MIN;    else return 0;}long dividend_l = dividend;long divisor_l = divisor;int sign = ((dividend_l<0)^(divisor_l<0))?-1:1;dividend_l = abs(dividend_l);divisor_l = abs(divisor_l);long ret = 0;while(dividend_l>=divisor_l){    long q = 1 , tmp = divisor_l;    while( dividend_l >= (tmp<<1) ){        cout<<tmp<<endl;        tmp  = tmp << 1;        q = q << 1;    }    ret = ret + q;    dividend_l = dividend_l - tmp;}}
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