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Caveats
=======
Since Cython mixes C and Python semantics, some things may be a bit
surprising or unintuitive. Work always goes on to make Cython more natural
for Python users, so this list may change in the future.
- Given two typed ``int`` variables ``a`` and ``b``, ``a % b`` has the
same sign as the second argument (following Python semantics) rather than
having the same sign as the first (as in C). The C behavior can be
obtained, at some speed gain, by enabling the cdivision directive
(versions prior to Cython 0.12 always followed C semantics).
- Care is needed with unsigned types. ``cdef unsigned n = 10;
print(range(-n, n))`` will print an empty list, since ``-n`` wraps
around to a large positive integer prior to being passed to the
``range`` function.
- Python's ``float`` type actually wraps C ``double`` values, and
the ``int`` type in Python 2.x wraps C ``long`` values.
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