def sub(cls, a, b, dest=None): return RealPVector.sub(a, b, dest)
def sub(cls, a, b, dest=None): return RealPVector.sub(a, b, dest)
def __sub__(a, b): return __pvector__.sub(a, b, None)
def sub(cls, a, b, dest=None): return __pvector__.sub(a, b, dest)
def __sub__(a, b): return __pvector__.sub(a, b, None)
def sub(cls, a, b, dest=None): return __pvector__.sub(a, b, dest)
def __sub__(a, b): return PVector.sub(a, b, None)