PyObject * new_py_fmat(uint_t height, uint_t length);
// defined in aubio-proxy.c
+extern int PyAubio_IsValidVector (PyObject *input);
+
extern PyObject *PyAubio_CFvecToArray (fvec_t * self);
extern int PyAubio_ArrayToCFvec (PyObject * self, fvec_t *out);