mass.hpp

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#ifndef EAGINE_UNITS_UNIT_SI_MASS_HPP
#define EAGINE_UNITS_UNIT_SI_MASS_HPP
 
#include "common.hpp"
 
namespace eagine::units {
namespace base {
 
// gram
struct gram : unit<mass, gram> {};
 
// tonne
using tonne = scaled_unit<scales::mega, gram>;
 
} // namespace base
 
template <>
struct name_of<base::gram> {
    static constexpr const char mp_str[] = "gram";
};
template <>
struct symbol_of<base::gram> {
    static constexpr const char mp_str[] = "g";
};
 
template <>
struct name_of<base::tonne> {
    static constexpr const char mp_str[] = "tonne";
};
 
template <>
struct symbol_of<base::tonne> {
    static constexpr const char mp_str[] = "t";
};
 
// si::base_unit<mass>
template <>
struct si::base_unit<base::mass>
  : base::scaled_unit<scales::kilo, base::gram> {};
 
// kilogram
using kilogram = unit<mass, si>;
 
// derived
using gram =
  make_scaled_base_dim_unit_t<base::scaled_unit<scales::one, base::gram>, si>;
 
using milligram =
  make_scaled_base_dim_unit_t<base::scaled_unit<scales::milli, base::gram>, si>;
 
using tonne = make_scaled_base_dim_unit_t<base::tonne, si>;
 
} // namespace eagine::units
 
#endif // EAGINE_UNITS_UNIT_SI_MASS_HPP