cimport numpy as np from libc.stdint cimport uint32_t, uint64_t cdef extern from "numpy/random/bitgen.h": struct bitgen: void *state uint64_t (*next_uint64)(void *st) nogil uint32_t (*next_uint32)(void *st) nogil double (*next_double)(void *st) nogil uint64_t (*next_raw)(void *st) nogil ctypedef bitgen bitgen_t from numpy.random.bit_generator cimport BitGenerator, SeedSequence