def previousnet(self, decrement=1):
        self._address = self._address - ((~self._mask & 0xffffffff) + 1) * decrement
        return self
Cholesky solve.
dataset/ETHPy150Open kdart/pycopia/core/pycopia/ipv4.py/IPv4.previousnet--crossover with--dataset/ETHPy150Open lebedov/scikit-cuda/skcuda/pcula.py/pculaDpotrs