text: #ifndef LOG_H
  #define LOG_H
  
  #ifdef LOGGING
  #include <iostream>
  #include <iomanip>
  
  #define LOG(M) { std::clog << M; }
  #define LOG_FN(M) { M; }
  #else
  #define LOG(M)
  #define LOG_FN(M)
  #endif // LOGGING
  
  #endif // LOG_H
  