Division of integers by bit manipulation

"I am trying to divide a integer by bit manipultion and return the quotient. I tried by debugging.At first debugging statement nothing is printed and at second second statement quotient is zero."

#include <iostream>

using namespace std;

//function with input arguments a as dividend and b as divisor

int divide(int A, int B) {

 if(A==0)return 0;

int sign = ((A < 0) ^ (B < 0)) ? -1 : 1; 

// remove sign of operands

  long long a= abs(A); 

 long long b= abs(B); 

// Initialize the quotient

   long long quotient = 0, temp = 0; 

// test down from the highest bit and

// accumulate the tentative value for

// valid bit

   for (int i = 31; i >= 0; --i) { 

   if (temp + (b << i) <= a) { 

//temp stores the the mutiplier of divisor if it is less than or equal to //dividend

    temp += b<< i; 

//updates the quotient

  quotient |= 1LL << i; 
  cout<<quotient;
         } 
  }cout<<quotient; 

  return (int)(sign*quotient); 
      }


  int main() {divide(-2147483648,-1);

   }

//Expected=2147483647.

//Actual =0