Bitmasking Quiz Q. 7

#1

Q7. bitmask power of 2
bool get(int x)
{
return (x && !(x & (x - 1)));
}
Above function will return :-
#can you explain what does this function do?

#2

It returns one if the number is power of 2 else return 0.

#3

How? Can you please elaborate?

#4

Actually i have considered many numbers and find it by observation.