+// =========== user-level functions ===============
+// ================================================
+double sg_host_get_speed(sg_host_t host){
+ return surf_host_get_speed(host, 1.0);
+}
+
+double sg_host_get_available_speed(sg_host_t host){
+ return surf_host_get_available_speed(host);
+}
+/** @brief Returns the number of core of the processor. */
+int sg_host_get_core(sg_host_t host) {
+ return surf_host_get_core(host);
+}
+/** @brief Returns the state of a host.
+ * @return 1 if the host is active or 0 if it has crashed.
+ */
+int sg_host_get_state(sg_host_t host) {
+ return surf_host_get_state(surf_host_resource_priv(host));
+}
+
+/** @brief Returns the total energy consumed by the host (in Joules).
+ *
+ * See also @ref SURF_plugin_energy.
+ */
+double sg_host_get_consumed_energy(sg_host_t host) {
+ return surf_host_get_consumed_energy(host);
+}
+
+/** @brief Returns the number of power states for a host.
+ *
+ * See also @ref SURF_plugin_energy.
+ */
+int sg_host_get_nb_pstates(sg_host_t host) {
+ return surf_host_get_nb_pstates(host);
+}
+
+/** @brief Gets the pstate at which that host currently runs.
+ *
+ * See also @ref SURF_plugin_energy.
+ */
+int sg_host_get_pstate(sg_host_t host) {
+ return surf_host_get_pstate(host);
+}
+
+namespace simgrid {