-int implicit_init ( Object *ob, ClothModifierData *clmd );
-int implicit_free ( ClothModifierData *clmd );
-int implicit_solver ( Object *ob, float frame, ClothModifierData *clmd, ListBase *effectors );
+int implicit_init ( struct Object *ob, struct ClothModifierData *clmd );
+int implicit_free ( struct ClothModifierData *clmd );
+int implicit_solver ( struct Object *ob, float frame, struct ClothModifierData *clmd, struct ListBase *effectors );