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mp_units::codata::codata2018::fine_structure_constant

Synopsis

Declared in <mp-units/systems/codata/codata2018_essential.h>

struct fine_structure_constant final :
    named_constant<
      symbol_text<3UL - 1, 6UL - 1>{u8"\316\261", "alpha"},
      mag_ratio<72973525693L, 10000000000L> * mag_power<10, -3> * one,
      (standard_uncertainty<mp_units::scaled_unit<
         mp_units::detail::unit_magnitude<power_v<2L, ratio{-13, 1}.num>{}, power_v<5L, ratio{-13, 1}.num>{}, 11L>{{}},
         mp_units::one>>){mag_ratio<11, 10> * mag_power<10, -12> * one}>

Base Classes

NameDescription
named_constant<symbol_text<3UL - 1, 6UL - 1>{u8"\316\261", "alpha"}, mag_ratio<72973525693L, 10000000000L> * mag_power<10, -3> * one, (standard_uncertainty<mp_units::scaled_unit<mp_units::detail::unit_magnitude<power_v<2L, ratio{-13, 1}.num>{}, power_v<5L, ratio{-13, 1}.num>{}, 11L>{{}}, mp_units::one>>){mag_ratio<11, 10> * mag_power<10, -12> * one}>