class C64 {

  unsigned __int64 Value;

  public:

  C64 () : Value (0) { }

  operator unsigned __int64 () const { return Value; }
  operator __int64 () const { return Value; }
  void operator = (unsigned __int64 S) { Value = S; }
  void operator = (__int64 S) { Value = S; }

};

void f () {

  C64 c;

  int i = 0;
  unsigned int ui = 0;

  bool b = (c == 0);

  c = i;
  c = ui;

}