-e_surf_action_state_t surf_action_state_get(surf_action_t action);
-double surf_action_get_start_time(surf_action_t action);
-double surf_action_get_finish_time(surf_action_t action);
+e_surf_action_state_t surf_action_state_get(surf_action_t action); /* cannot declare inline since we use a pointer to it */
+double surf_action_get_start_time(surf_action_t action); /* cannot declare inline since we use a pointer to it */
+double surf_action_get_finish_time(surf_action_t action); /* cannot declare inline since we use a pointer to it */