* Vres Id type, that identifies a vres created to manage a given
* contract
**/
-typedef int frsh_vres_id_t; // => 0
+typedef unsigned int frsh_vres_id_t; // => 0
/** Contract ressource type: processor, network, memory **/
typedef enum {
/** Ressource Id: processor_id or network_id **/
/**********************************************/
-typedef int frsh_resource_id_t;
+typedef unsigned int frsh_resource_id_t;
/** This defines 1 resource_id value for systems that have only one
resource of a kind. **/