mp_units::codata::codata2018::proton_mass¶
Synopsis¶
Declared in <mp-units/systems/codata/codata2018_essential.h>
struct proton_mass final :
named_constant<"m_p", mag_ratio<167262192369L, 100000000000L> * mag_power<10, -27> * si::kilogram,
(standard_uncertainty<
mp_units::scaled_unit<mp_units::detail::unit_magnitude<power_v<2L, ratio{-38, 1}.num>{}, 3L,
power_v<5L, ratio{-38, 1}.num>{}, 17L>{{}},
mp_units::si::kilo_<mp_units::si::gram>>>){
mag_ratio<51, 10> * mag_power<10, -37> * si::kilogram}>