def _pdf(self, x, c):
        xc1 = np.power(x, -c - 1.0)
        xc2 = np.power(x, -c)
        xc2 = exp(-xc2)
        return c * xc1 * xc2
dataset/ETHPy150Open scipy/scipy/scipy/stats/_continuous_distns.py/invweibull_gen._pdf/original