void Pds_add_double(pds_t *pds, double value);
double Pds_get_double(pds_t *pds);
int Pds_get_data(pds_t *pds, uint8_t *data, int maxlen);
void Pds_add_double(pds_t *pds, double value);
double Pds_get_double(pds_t *pds);
int Pds_get_data(pds_t *pds, uint8_t *data, int maxlen);