Divide two numbers using log10 giving wrong answer

Here is a question: https://leetcode.com/problems/divide-two-integers/submissions/

I have used the property of log10

log(a)-log(b)=log(a/b)

and

pow(10,log10(a))=a

The code seems to be wrong for

a= -2147483648

b= -1

expected output: 2147483647

code output: -2147483648

What could be the possible problem in the code?

class Solution {
public:
    int divide(int a, int b) {
        int neg=1;
        if(a>INT_MAX) a=INT_MAX;
        if(a<INT_MIN) a=INT_MIN;
        if((a>0 && b<0) || (a<0 && b>0)) neg=-1;

        if(a<0) a=abs(a);
        if(b<0) b=abs(b);

        if(b==1) return a*neg;
        return neg*(pow(10,log10(a)-log10(b)));
    }
};