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from libc.stdint cimport (uint8_t, uint16_t, uint32_t, uint64_t,
int8_t, int16_t, int32_t, int64_t, intptr_t)
import numpy as np
cimport numpy as np
ctypedef np.npy_bool bool_t
from numpy.random cimport bitgen_t
cdef inline uint64_t _gen_mask(uint64_t max_val) noexcept nogil:
"""Mask generator for use in bounded random numbers"""
# Smallest bit mask >= max
cdef uint64_t mask = max_val
mask |= mask >> 1
mask |= mask >> 2
mask |= mask >> 4
mask |= mask >> 8
mask |= mask >> 16
mask |= mask >> 32
return mask
cdef object _rand_uint64(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_uint32(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_uint16(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_uint8(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_bool(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_int64(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_int32(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_int16(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
cdef object _rand_int8(object low, object high, object size, bint use_masked, bint closed, bitgen_t *state, object lock)
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