mp_units::codata::codata2014::electron_helion_mass_ratio¶
Synopsis¶
Declared in <mp-units/systems/codata/codata2014.h>
struct electron_helion_mass_ratio final :
named_constant<
"electron_helion_mass_ratio", mag_ratio<1819543074854L, 1000000000000L> * mag_power<10, -4> * one,
(standard_uncertainty<mp_units::scaled_unit<
mp_units::detail::unit_magnitude<power_v<2L, ratio{-13, 1}.num>{}, power_v<5L, ratio{-16, 1}.num>{}, 11L>{{}},
mp_units::one>>){mag_ratio<88, 10> * mag_power<10, -15> * one}>