text: #ifndef __Atmosphere76_HH__
  #define __Atmosphere76_HH__
  /********************************* TRICK HEADER *******************************
  PURPOSE:
        (US 1976 Standard Atmosphere (public domain))
  LIBRARY DEPENDENCY:
        ((../../src/env/atmosphere76.cpp))
  *******************************************************************************/
  #include <cstdio>
  
  #include "env/atmosphere.hh"
  
  namespace cad {
  class Atmosphere76 : public Atmosphere {
   public:
      Atmosphere76();
  
      virtual ~Atmosphere76();
  
      virtual void set_altitude(double altitude_in_meter);
  
   private:
      void update_values();
  };
  }  // namespace cad
  
  #endif  // __Atmosphere76__
  