__doc__ = u"""
>>> make3z()
[(4+0j), 5j, (4+5j)]
>>> zadd()
[(4+5j), (4+10j), (8+5j)]
"""

cdef extern from "ccompleximpl.h":
     pass

def make3z():
    cdef complex z1 = 4
    cdef complex z2 = 5j
    cdef complex z3 = z1 + z2
    return [z1, z2, z3]

def zadd():
    a, b, c = make3z()
    cdef complex z1 = a
    cdef complex z2 = b
    cdef complex z3 = c
    return [z1+z2, z2+z3, z3+z1]