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mp_units::codata::proton_electron_mass_ratio

Synopsis

Declared in <mp-units/systems/codata/codata2022_essential.h>

struct proton_electron_mass_ratio final :
    named_constant<
      "proton_electron_mass_ratio", mag_ratio<1836152673426L, 1000000000> * one,
      (standard_uncertainty<mp_units::scaled_unit<
         mp_units::detail::unit_magnitude<power_v<2L, ratio{-4, 1}.num>{}, power_v<5L, ratio{-9, 1}.num>{}>{{}},
         mp_units::one>>){mag_ratio<32, 10> * mag_power<10, -8> * one}>

Base Classes

NameDescription
named_constant<"proton_electron_mass_ratio", mag_ratio<1836152673426L, 1000000000> * one, (standard_uncertainty<mp_units::scaled_unit<mp_units::detail::unit_magnitude<power_v<2L, ratio{-4, 1}.num>{}, power_v<5L, ratio{-9, 1}.num>{}>{{}}, mp_units::one>>){mag_ratio<32, 10> * mag_power<10, -8> * one}>