text: #ifndef NUMGRINDTEST01_GRAPHNODESCALAROUTPUT_H
  #define NUMGRINDTEST01_GRAPHNODESCALAROUTPUT_H
  
  #include "Eigen/Core"
  #include "CompGraphNode.h"
  
  namespace NumGrind {
      namespace CompGraph {
          class CGScalarOutput : public CompGraphNode {
          public:
              virtual void backwardPass(const float sensitivity, Eigen::VectorXf &grad) = 0;
  
              virtual float value() const = 0;
          };
      }
  }
  
  #endif //NUMGRINDTEST01_GRAPHNODESCALAROUTPUT_H
  