text: #ifndef STL_RISE_H
  #define STL_RISE_H
  
  namespace stl_library {
  
  class StlRiseNode {
      private:
          double prev_in;
  
      public:
          StlRiseNode();
          double update(double sample);
          void reset();
  };
  
  } // namespace stl_library
  
  #endif /* STL_RISE_H */
  
  