ndarray.__oct__() <==> oct(x)

ndarray.__or__ x.__or__(y) <==> x|y

ndarray.__ne__ x.__ne__(y) <==> x!=y

ndarray.__nonzero__ x.__nonzero__() <==> x != 0

ndarray.__neg__ x.__neg__() <==> -x

ndarray.__mul__ x.__mul__(y) <==> x*y

ndarray.__mod__ x.__mod__(y) <==> x%y

ndarray.__lshift__ x.__lshift__(y) <==> x<<y

ndarray.__lt__ x.__lt__(y) <==> x<y

ndarray.__le__ x.__le__(y) <==> x<=y