     desired: COpaquePointer(desired))
 }
 
-@transparent public func _countLeadingZeros(value: Int64) -> Int64 {
+@transparent
+func _countLeadingZeros(value: Int64) -> Int64 {
     return Int64(Builtin.int_ctlz_Int64(value.value, false.value))
 }
 
 /// Returns if `x` is a power of 2.
 @transparent
-public func _isPowerOf2(x: UInt) -> Bool {
+func _isPowerOf2(x: UInt) -> Bool {
   if x == 0 {
     return false
   }

///
/// TODO: Implement version working on Int instead of Int64.
@transparent
public func _floorLog2(x: Int64) -> Int {
  _sanityCheck(x > 0)
  return 63 - Int(_countLeadingZeros(x))
}


/// Returns if `x` is a power of 2.
@transparent
func _isPowerOf2(x: Int) -> Bool {
  if x <= 0 {
    return false
  }
