1  cimport numpy as np
 2  from libc.stdint cimport uint32_t, uint64_t
 3  
 4  cdef extern from "numpy/random/bitgen.h":
 5      struct bitgen:
 6          void *state
 7          uint64_t (*next_uint64)(void *st) nogil
 8          uint32_t (*next_uint32)(void *st) nogil
 9          double (*next_double)(void *st) nogil
10          uint64_t (*next_raw)(void *st) nogil
11  
12      ctypedef bitgen bitgen_t
13  
14  from numpy.random.bit_generator cimport BitGenerator, SeedSequence