CTL_STATUS_t ctl_xively_datastream_update(CTL_XIVELY_DATASTREAM_t *self, const CTL_XIVELY_DATAPOINT_t *point);
ctl_xively_datastream_update sends a request to the Xively API to write the datapoint point to the datastream self in the feed that the datastream is registered to. This function does not store any data in the local datastream buffer: it is a direct request using a live connection to the Xively server.
ctl_xively_datastream_update returns a standard status code.