-XBT_PUBLIC double sg_host_get_consumed_energy(sg_host_t host);
-XBT_PUBLIC double sg_host_get_idle_consumption(sg_host_t host);
-XBT_PUBLIC double sg_host_get_wattmin_at(sg_host_t host, int pstate);
-XBT_PUBLIC double sg_host_get_wattmax_at(sg_host_t host, int pstate);
-XBT_PUBLIC double sg_host_get_power_range_slope_at(sg_host_t host, int pstate);
-XBT_PUBLIC double sg_host_get_current_consumption(sg_host_t host);
+XBT_PUBLIC double sg_host_get_consumed_energy(const_sg_host_t host);
+XBT_PUBLIC double sg_host_get_idle_consumption(const_sg_host_t host);
+XBT_PUBLIC double sg_host_get_idle_consumption_at(const_sg_host_t host, int pstate);
+XBT_PUBLIC double sg_host_get_wattmin_at(const_sg_host_t host, int pstate);
+XBT_PUBLIC double sg_host_get_wattmax_at(const_sg_host_t host, int pstate);
+XBT_PUBLIC double sg_host_get_power_range_slope_at(const_sg_host_t host, int pstate);
+XBT_PUBLIC double sg_host_get_current_consumption(const_sg_host_t host);