Scheduler backprop

include/aidge/backend/cpu/operator/FCImpl.hpp

@@ -48,6 +48,8 @@ class FCImplBackward_cpu : public Registrable<FCImplBackward_cpu,
                                               const void *,
                                               const void *,
                                               const void *,
+                                              void *,
+                                              void *,
                                               void *)> {};
 
 class FCImpl_cpu : public OperatorImpl {
@@ -58,7 +60,8 @@ public:
         return std::make_unique<FCImpl_cpu>(op);
     }
 
-    void forward() override;
+    void forward() override final;
+    void backward() override final;
 };
 
 namespace {