* hence the loop. moving the checks in the main loop is also possible.
* for now, just branch in the main loop given this function error value returned. */
unsigned add_coordinates(coordinates_t new_coordinates, coordinates_t* coordinates_array, unsigned round) {
* hence the loop. moving the checks in the main loop is also possible.
* for now, just branch in the main loop given this function error value returned. */
unsigned add_coordinates(coordinates_t new_coordinates, coordinates_t* coordinates_array, unsigned round) {