def _unpack()

in bitpack.pyx [0:0]

• 18 lines of code
• 5 McCabe index (conditional complexity)

def _unpack(uint64_t[:, :, ::1] packed):
    cdef int lines = packed.shape[0]
    cdef int nbits = packed.shape[1]
    cdef int block_size = packed.shape[2]
    cdef int storage = 64
    out = np.zeros((lines * block_size * storage), dtype=np.int16)
    cdef int16_t[::1] out_view = out
    cdef int bit_in, bit_out, index, line
    cdef int16_t x
    cdef uint64_t tmp
    for line in range(lines):
        for bit_in in range(storage):
            for bit_out in range(nbits):
                for index in range(block_size):
                    tmp = packed[line, bit_out, index]
                    x = (tmp >> bit_in) & 1
                    out_view[line * block_size * storage + bit_in * block_size + index] |= x << bit_out
    return out