text: #ifndef MITAMA_DIMENSIONAL_DERIVED_UNITS_LINEAR_MASS_DENSITY_HPP
  #define MITAMA_DIMENSIONAL_DERIVED_UNITS_LINEAR_MASS_DENSITY_HPP
  #include <mitama/dimensional/systems/si/all.hpp>
  #include <mitama/dimensional/quantity.hpp>
  #include <mitama/dimensional/io.hpp>
  
  
  
  namespace mitama::systems::si {
  template<class> struct linear_mass_density_synonym{};
  using linear_mass_density_t = make_synonym_t<linear_mass_density_synonym, decltype(meter<-1> * kilogram<>)>;
  
  inline constexpr linear_mass_density_t linear_mass_density{};
  
  }
  
  namespace mitama {
  template <> struct  abbreviation_<systems::si::linear_mass_density_t> { static constexpr char str[] = "kg/m"; };
  }
  
  #endif
  