np.longdouble в numpy: https://docs.scipy.org/doc/numpy-1.15.0/user/basics.types.html "Whether this is possible in numpy depends on the hardware and on the development environment: specifically, x86 machines provide hardware floating-point with 80-bit precision"
Joric
цепляешь два байта паддинга \x00 и читаешь как np.float96 https://stackoverflow.com/questions/38849469/python-reading-float80-values