function isPow2Uint32( x ) {
	return Boolean( addon( x ) );
}
Tests whether an unsigned integer is a power of 2.

@private
@param {number} x - value to test
@returns {boolean} boolean indicating whether the number is a power of 2

@example
var bool = isPow2Uint32( 5 );
// returns false

@example
var bool = isPow2Uint32( 2 );
// returns true

@example
var bool = isPow2Uint32( 0 );
// returns false