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cdef extern from "<bit>" namespace "std" nogil:
# bit_cast (gcc >= 11.0, clang >= 14.0)
cdef To bit_cast[To, From](From&)
# byteswap (C++23)
#cdef T byteswap[T](T)
# integral powers of 2 (gcc >= 10.0, clang >= 12.0)
cdef bint has_single_bit[T](T)
cdef T bit_ceil[T](T)
cdef T bit_floor[T](T)
cdef int bit_width[T](T)
# rotating (gcc >= 9.0, clang >= 9.0)
cdef T rotl[T](T, int shift)
cdef T rotr[T](T, int shift)
# counting (gcc >= 9.0, clang >= 9.0)
cdef int countl_zero[T](T)
cdef int countl_one[T](T)
cdef int countr_zero[T](T)
cdef int countr_one[T](T)
cdef int popcount[T](T)
# endian
cpdef enum class endian(int):
little,
big,
native
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