I have to make a function that check if a input number is -1 or not. here's the requirement

```
isTmin - returns 1 if x is the minimum, two's complement number, and 0 otherwise 
Legal ops: ! ~ & ^ | +
Max ops: 10
Rating: 1

```

First I try this:

```
int isTmin(int x) {
  return !(x^(0x01<<31));
}

```

this method works, but I am not allowed to use the shifting operator. any ideas how can I solve this problem w/o using shift operator?