Testing of gmpy2 mpc to_binary and from_binary
----------------------------------------------

    >>> import gmpy2
    >>> from gmpy2 import mpc,to_binary,from_binary

Test
----

    >>> x=mpc("0+0j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("1+0j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("-1+0j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("0+1j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("0-1j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("inf+0j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("0+infj");x==from_binary(to_binary(x))
    True
    >>> x=mpc("inf-infj");x==from_binary(to_binary(x))
    True
    >>> x=mpc("inf+nanj")
    >>> y=from_binary(to_binary(x))
    >>> x.real==y.real
    True
    >>> gmpy2.is_nan(y.imag)
    True
    >>> x=mpc("-inf+0j");x==from_binary(to_binary(x))
    True
    >>> x=mpc("0-infj");x==from_binary(to_binary(x))
    True
    >>> x=mpc("-inf-infj");x==from_binary(to_binary(x))
    True
    >>> x=mpc("-inf+nanj")
    >>> y=from_binary(to_binary(x))
    >>> x.real==y.real
    True
    >>> gmpy2.is_nan(y.imag)
    True
    >>> x=mpc("nan+0j")
    >>> y=from_binary(to_binary(x))
    >>> x.imag==y.imag
    True
    >>> gmpy2.is_nan(y.real)
    True
    >>> x=mpc("0+nanj")
    >>> y=from_binary(to_binary(x))
    >>> x.real==y.real
    True
    >>> gmpy2.is_nan(y.imag)
    True
    >>> x=mpc("nan-infj")
    >>> y=from_binary(to_binary(x))
    >>> x.imag==y.imag
    True
    >>> gmpy2.is_nan(y.real)
    True
    >>> x=mpc("nan+nanj")
    >>> y=from_binary(to_binary(x))
    >>> gmpy2.is_nan(y.real)
    True
    >>> gmpy2.is_nan(y.imag)
    True
    >>> gmpy2.get_context().real_prec=100
    >>> gmpy2.get_context().imag_prec=110
    >>> from_binary(to_binary(mpc("1.3-4.7j")))
    mpc('1.2999999999999999999999999999994-4.7000000000000000000000000000000025j',(100,110))
    >>> gmpy2.set_context(gmpy2.context())