MPFR Functionality
==================

    >>> import gmpy2 as G
    >>> from gmpy2 import mpfr
    >>> a = mpz(123)
    >>> b = mpz(456)

Test special functions
======================

Test cbrt
---------

Test exp
--------

Test exp10
----------

Test exp2
---------

Test expm1
----------

Test hypot
----------

Test log
--------

Test log10
----------

Test log1p
----------

Test log2
---------