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mp_units::codata::codata2018::neutron_proton_mass_ratio

Synopsis

Declared in <mp-units/systems/codata/codata2018.h>

struct neutron_proton_mass_ratio final :
    named_constant<
      "neutron_proton_mass_ratio", mag_ratio<100137841931L, 100000000000L> * one,
      (standard_uncertainty<mp_units::scaled_unit<
         mp_units::detail::unit_magnitude<power_v<2L, ratio{-11, 1}.num>{}, power_v<5L, ratio{-11, 1}.num>{},
                                          power_v<7L, ratio{2, 1}.num>{}>{{}},
         mp_units::one>>){mag_ratio<49, 10> * mag_power<10, -10> * one}>

Base Classes

NameDescription
named_constant<"neutron_proton_mass_ratio", mag_ratio<100137841931L, 100000000000L> * one, (standard_uncertainty<mp_units::scaled_unit<mp_units::detail::unit_magnitude<power_v<2L, ratio{-11, 1}.num>{}, power_v<5L, ratio{-11, 1}.num>{}, power_v<7L, ratio{2, 1}.num>{}>{{}}, mp_units::one>>){mag_ratio<49, 10> * mag_power<10, -10> * one}>