100644 blob aa9fad79c5cea6490780b8c767f99834b04323f6	middleware.cc
100644 blob 7ac6f8ba62ca35cc2d40cad43f85cebcd43a8eea	middleware.h
100644 blob 0cdc1b50c887eaffa93eaae760a34a7882458c5a	middleware_derivative.h