Method has_jacobian_operator

interfaces/C/Uno_C_API.cpp:54–56

availability of linear operators

   // availability of linear operators
   [[nodiscard]] bool has_jacobian_operator() const override {
      return (this->user_model.jacobian_operator != nullptr);
   }

   [[nodiscard]] bool has_jacobian_transposed_operator() const override {
      return (this->user_model.jacobian_transposed_operator != nullptr);