def _prefix_from_ip_int(self, ip_int, mask=32):
        while mask:
            if ip_int & 1 == 1:
                break
            ip_int >>= 1
            mask -= 1

        return mask
Test Surf with a simple collection of points and animate it.
dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/contrib/ipaddr.py/_BaseInterface._prefix_from_ip_int--crossover with--dataset/ETHPy150Open enthought/mayavi/mayavi/tools/helper_functions.py/test_simple_surf_anim