mp_units::codata::lattice_spacing_of_silicon_220¶
Synopsis¶
Declared in <mp-units/systems/codata/codata2022.h>
struct lattice_spacing_of_silicon_220 final :
named_constant<
"lattice_spacing_of_silicon_220", mag_ratio<1920155716, 1000000000> * mag_power<10, -10> * si::metre,
(standard_uncertainty<mp_units::scaled_unit<
mp_units::detail::unit_magnitude<power_v<2L, ratio{-14, 1}.num>{}, power_v<5L, ratio{-19, 1}.num>{}>{{}},
mp_units::si::metre>>){mag_ratio<32, 10> * mag_power<10, -18> * si::metre}>