C API – codata

Contributing and specs
The prototypes of the C API are defined as shown below.
#ifndef CODATA_H
#define CODATA_H
#if _MSC_VER
#define ADD_IMPORT __declspec(dllimport)
#else
#define ADD_IMPORT
#endif

extern char* codata_get_version(void); 

struct codata_constant_type{
    char name[65];
    double value;
    double uncertainty;
    char unit[33];
};

ADD_IMPORT extern const int YEAR_2010;
ADD_IMPORT extern const struct codata_constant_type LATTICE_SPACING_OF_SILICON_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ANGSTROM_STAR_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ACTION_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_DENSITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CURRENT_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ENERGY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_FORCE_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_LENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_DIPOLE_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_FLUX_DENSITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAGNETIZABILITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MOMUM_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_PERMITTIVITY_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_TIME_2010;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_VELOCITY_2010;
ADD_IMPORT extern const struct codata_constant_type AVOGADRO_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_2010;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_EV_T_2010;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_HZ_T_2010;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_INVERSE_METERS_PER_TESLA_2010;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_K_T_2010;
ADD_IMPORT extern const struct codata_constant_type BOHR_RADIUS_2010;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_EV_K_2010;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_HZ_K_2010;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_INVERSE_METERS_PER_KELVIN_2010;
ADD_IMPORT extern const struct codata_constant_type CHARACTERISTIC_IMPEDANCE_OF_VACUUM_2010;
ADD_IMPORT extern const struct codata_constant_type CLASSICAL_ELECTRON_RADIUS_2010;
ADD_IMPORT extern const struct codata_constant_type COMPTON_WAVELENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type COMPTON_WAVELENGTH_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type CONDUCTANCE_QUANTUM_2010;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type CU_X_UNIT_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_NEUTRON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_RMS_CHARGE_RADIUS_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRIC_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_CHARGE_TO_MASS_QUOTIENT_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_HELION_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_ANOMALY_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TAU_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TRITON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_2010;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_OVER_H_2010;
ADD_IMPORT extern const struct codata_constant_type FARADAY_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type FARADAY_CONSTANT_FOR_CONVENTIONAL_ELECTRIC_CURRENT_2010;
ADD_IMPORT extern const struct codata_constant_type FERMI_COUPLING_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type FINE_STRUCTURE_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_IN_EV_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type HELION_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_FINE_STRUCTURE_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type INVERSE_OF_CONDUCTANCE_QUANTUM_2010;
ADD_IMPORT extern const struct codata_constant_type JOSEPHSON_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type JOULE_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KELVIN_KILOGRAM_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ELECTRON_VOLT_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HARTREE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HERTZ_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_INVERSE_METER_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_JOULE_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_KELVIN_RELATIONSHIP_2010;
ADD_IMPORT extern const struct codata_constant_type LATTICE_PARAMETER_OF_SILICON_2010;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_100_KPA_2010;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA_2010;
ADD_IMPORT extern const struct codata_constant_type MAG_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type MAG_FLUX_QUANTUM_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_GAS_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_OF_CARBON_12_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_PLANCK_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_PLANCK_CONSTANT_TIMES_C_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA_2010;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_SILICON_2010;
ADD_IMPORT extern const struct codata_constant_type MO_X_UNIT_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_COMPTON_WAVELENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_COMPTON_WAVELENGTH_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_ANOMALY_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_NEUTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type MUON_TAU_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_IN_EV_S_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_LENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMUM_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMUM_IN_MEV_C_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_TIME_2010;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_VELOCITY_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_COMPTON_WAVELENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_COMPTON_WAVELENGTH_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MUON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TAU_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_2010;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C_2010;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_2010;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_EV_T_2010;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_INVERSE_METERS_PER_TESLA_2010;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_K_T_2010;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_MHZ_T_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_IN_EV_S_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_OVER_2_PI_IN_EV_S_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_OVER_2_PI_TIMES_C_IN_MEV_FM_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_LENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TEMPERATURE_2010;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TIME_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_CHARGE_TO_MASS_QUOTIENT_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_COMPTON_WAVELENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_COMPTON_WAVELENGTH_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_SHIELDING_CORRECTION_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_MUON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_RMS_CHARGE_RADIUS_2010;
ADD_IMPORT extern const struct codata_constant_type PROTON_TAU_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_2010;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_TIMES_2_2010;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_C_IN_HZ_2010;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_EV_2010;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_J_2010;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_100_KPA_2010;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_101_325_KPA_2010;
ADD_IMPORT extern const struct codata_constant_type SECOND_RADIATION_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type SPEED_OF_LIGHT_IN_VACUUM_2010;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ACCELERATION_OF_GRAVITY_2010;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ATMOSPHERE_2010;
ADD_IMPORT extern const struct codata_constant_type STANDARD_STATE_PRESSURE_2010;
ADD_IMPORT extern const struct codata_constant_type STEFAN_BOLTZMANN_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_COMPTON_WAVELENGTH_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_COMPTON_WAVELENGTH_OVER_2_PI_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_MUON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_NEUTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type TAU_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type THOMSON_CROSS_SECTION_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_ELECTRON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_G_FACTOR_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_IN_U_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_MOLAR_MASS_2010;
ADD_IMPORT extern const struct codata_constant_type TRITON_PROTON_MASS_RATIO_2010;
ADD_IMPORT extern const struct codata_constant_type UNIFIED_ATOMIC_MASS_UNIT_2010;
ADD_IMPORT extern const struct codata_constant_type VON_KLITZING_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type WEAK_MIXING_ANGLE_2010;
ADD_IMPORT extern const struct codata_constant_type WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT_2010;
ADD_IMPORT extern const struct codata_constant_type WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT_2010;

ADD_IMPORT extern const int YEAR_2014;
ADD_IMPORT extern const struct codata_constant_type LATTICE_SPACING_OF_SILICON_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ANGSTROM_STAR_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ACTION_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_DENSITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CURRENT_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ENERGY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_FORCE_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_LENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_DIPOLE_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_FLUX_DENSITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAGNETIZABILITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MOMUM_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_PERMITTIVITY_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_TIME_2014;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_VELOCITY_2014;
ADD_IMPORT extern const struct codata_constant_type AVOGADRO_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_2014;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_EV_T_2014;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_HZ_T_2014;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_INVERSE_METERS_PER_TESLA_2014;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_K_T_2014;
ADD_IMPORT extern const struct codata_constant_type BOHR_RADIUS_2014;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_EV_K_2014;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_HZ_K_2014;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_INVERSE_METERS_PER_KELVIN_2014;
ADD_IMPORT extern const struct codata_constant_type CHARACTERISTIC_IMPEDANCE_OF_VACUUM_2014;
ADD_IMPORT extern const struct codata_constant_type CLASSICAL_ELECTRON_RADIUS_2014;
ADD_IMPORT extern const struct codata_constant_type COMPTON_WAVELENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type COMPTON_WAVELENGTH_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type CONDUCTANCE_QUANTUM_2014;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type CU_X_UNIT_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_NEUTRON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_RMS_CHARGE_RADIUS_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRIC_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_CHARGE_TO_MASS_QUOTIENT_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_HELION_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_ANOMALY_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TAU_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TRITON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_2014;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_OVER_H_2014;
ADD_IMPORT extern const struct codata_constant_type FARADAY_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type FARADAY_CONSTANT_FOR_CONVENTIONAL_ELECTRIC_CURRENT_2014;
ADD_IMPORT extern const struct codata_constant_type FERMI_COUPLING_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type FINE_STRUCTURE_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_IN_EV_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type HELION_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_FINE_STRUCTURE_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type INVERSE_OF_CONDUCTANCE_QUANTUM_2014;
ADD_IMPORT extern const struct codata_constant_type JOSEPHSON_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type JOULE_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KELVIN_KILOGRAM_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ELECTRON_VOLT_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HARTREE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HERTZ_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_INVERSE_METER_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_JOULE_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_KELVIN_RELATIONSHIP_2014;
ADD_IMPORT extern const struct codata_constant_type LATTICE_PARAMETER_OF_SILICON_2014;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_100_KPA_2014;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA_2014;
ADD_IMPORT extern const struct codata_constant_type MAG_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type MAG_FLUX_QUANTUM_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_GAS_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_OF_CARBON_12_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_PLANCK_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_PLANCK_CONSTANT_TIMES_C_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA_2014;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_SILICON_2014;
ADD_IMPORT extern const struct codata_constant_type MO_X_UNIT_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_COMPTON_WAVELENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_COMPTON_WAVELENGTH_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_ANOMALY_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_NEUTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type MUON_TAU_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_IN_EV_S_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_LENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMUM_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMUM_IN_MEV_C_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_TIME_2014;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_VELOCITY_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_COMPTON_WAVELENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_COMPTON_WAVELENGTH_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MUON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TAU_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_2014;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C_2014;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_2014;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_EV_T_2014;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_INVERSE_METERS_PER_TESLA_2014;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_K_T_2014;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_MHZ_T_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_IN_EV_S_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_OVER_2_PI_IN_EV_S_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_OVER_2_PI_TIMES_C_IN_MEV_FM_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_LENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TEMPERATURE_2014;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TIME_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_CHARGE_TO_MASS_QUOTIENT_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_COMPTON_WAVELENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_COMPTON_WAVELENGTH_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_SHIELDING_CORRECTION_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_MUON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_RMS_CHARGE_RADIUS_2014;
ADD_IMPORT extern const struct codata_constant_type PROTON_TAU_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_2014;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_TIMES_2_2014;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_C_IN_HZ_2014;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_EV_2014;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_J_2014;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_100_KPA_2014;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_101_325_KPA_2014;
ADD_IMPORT extern const struct codata_constant_type SECOND_RADIATION_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type SPEED_OF_LIGHT_IN_VACUUM_2014;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ACCELERATION_OF_GRAVITY_2014;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ATMOSPHERE_2014;
ADD_IMPORT extern const struct codata_constant_type STANDARD_STATE_PRESSURE_2014;
ADD_IMPORT extern const struct codata_constant_type STEFAN_BOLTZMANN_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_COMPTON_WAVELENGTH_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_COMPTON_WAVELENGTH_OVER_2_PI_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_MUON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_NEUTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type TAU_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type THOMSON_CROSS_SECTION_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_ELECTRON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_G_FACTOR_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_IN_U_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_MOLAR_MASS_2014;
ADD_IMPORT extern const struct codata_constant_type TRITON_PROTON_MASS_RATIO_2014;
ADD_IMPORT extern const struct codata_constant_type UNIFIED_ATOMIC_MASS_UNIT_2014;
ADD_IMPORT extern const struct codata_constant_type VON_KLITZING_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type WEAK_MIXING_ANGLE_2014;
ADD_IMPORT extern const struct codata_constant_type WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT_2014;
ADD_IMPORT extern const struct codata_constant_type WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT_2014;

ADD_IMPORT extern const int YEAR_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ANGSTROM_STAR_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ACTION_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_DENSITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CURRENT_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ENERGY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_FORCE_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_LENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_DIPOLE_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_FLUX_DENSITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAGNETIZABILITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MOMENTUM_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_PERMITTIVITY_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_TIME_2018;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_VELOCITY_2018;
ADD_IMPORT extern const struct codata_constant_type AVOGADRO_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_2018;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_EV_T_2018;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_HZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_INVERSE_METER_PER_TESLA_2018;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_K_T_2018;
ADD_IMPORT extern const struct codata_constant_type BOHR_RADIUS_2018;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_EV_K_2018;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_HZ_K_2018;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_INVERSE_METER_PER_KELVIN_2018;
ADD_IMPORT extern const struct codata_constant_type CHARACTERISTIC_IMPEDANCE_OF_VACUUM_2018;
ADD_IMPORT extern const struct codata_constant_type CLASSICAL_ELECTRON_RADIUS_2018;
ADD_IMPORT extern const struct codata_constant_type COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type CONDUCTANCE_QUANTUM_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_AMPERE_90_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_COULOMB_90_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_FARAD_90_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_HENRY_90_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_OHM_90_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_VOLT_90_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_WATT_90_2018;
ADD_IMPORT extern const struct codata_constant_type COPPER_X_UNIT_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_NEUTRON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_RMS_CHARGE_RADIUS_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_CHARGE_TO_MASS_QUOTIENT_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_IN_MHZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_HELION_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_ANOMALY_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TAU_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TRITON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_2018;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_OVER_H_BAR_2018;
ADD_IMPORT extern const struct codata_constant_type FARADAY_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type FERMI_COUPLING_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type FINE_STRUCTURE_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_IN_EV_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type HELION_SHIELDING_SHIFT_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type HYPERFINE_TRANSITION_FREQUENCY_OF_CS_133_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_FINE_STRUCTURE_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type INVERSE_OF_CONDUCTANCE_QUANTUM_2018;
ADD_IMPORT extern const struct codata_constant_type JOSEPHSON_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type JOULE_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KELVIN_KILOGRAM_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ELECTRON_VOLT_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HARTREE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HERTZ_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_INVERSE_METER_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_JOULE_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_KELVIN_RELATIONSHIP_2018;
ADD_IMPORT extern const struct codata_constant_type LATTICE_PARAMETER_OF_SILICON_2018;
ADD_IMPORT extern const struct codata_constant_type LATTICE_SPACING_OF_IDEAL_SI_220_2018;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_100_KPA_2018;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA_2018;
ADD_IMPORT extern const struct codata_constant_type LUMINOUS_EFFICACY_2018;
ADD_IMPORT extern const struct codata_constant_type MAG_FLUX_QUANTUM_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_GAS_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_OF_CARBON_12_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_PLANCK_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA_2018;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_SILICON_2018;
ADD_IMPORT extern const struct codata_constant_type MOLYBDENUM_X_UNIT_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_ANOMALY_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_NEUTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type MUON_TAU_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_IN_EV_S_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_LENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMENTUM_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMENTUM_IN_MEV_C_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_TIME_2018;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_VELOCITY_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_IN_MHZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MUON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TAU_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_2018;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C_2018;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_2018;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_EV_T_2018;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_INVERSE_METER_PER_TESLA_2018;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_K_T_2018;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_MHZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_IN_EV_HZ_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_LENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TEMPERATURE_2018;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TIME_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_CHARGE_TO_MASS_QUOTIENT_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_IN_MHZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_SHIELDING_CORRECTION_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_MUON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_RMS_CHARGE_RADIUS_2018;
ADD_IMPORT extern const struct codata_constant_type PROTON_TAU_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_2018;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_TIMES_2_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_MUON_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_NEUTRON_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PLANCK_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PLANCK_CONSTANT_IN_EV_S_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PLANCK_CONSTANT_TIMES_C_IN_MEV_FM_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PROTON_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type REDUCED_TAU_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_C_IN_HZ_2018;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_EV_2018;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_J_2018;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_100_KPA_2018;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_101_325_KPA_2018;
ADD_IMPORT extern const struct codata_constant_type SECOND_RADIATION_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_IN_MHZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_IN_MHZ_T_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDING_DIFFERENCE_OF_D_AND_P_IN_HD_2018;
ADD_IMPORT extern const struct codata_constant_type SHIELDING_DIFFERENCE_OF_T_AND_P_IN_HT_2018;
ADD_IMPORT extern const struct codata_constant_type SPEED_OF_LIGHT_IN_VACUUM_2018;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ACCELERATION_OF_GRAVITY_2018;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ATMOSPHERE_2018;
ADD_IMPORT extern const struct codata_constant_type STANDARD_STATE_PRESSURE_2018;
ADD_IMPORT extern const struct codata_constant_type STEFAN_BOLTZMANN_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_COMPTON_WAVELENGTH_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_MUON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_NEUTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TAU_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type THOMSON_CROSS_SECTION_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_ELECTRON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_G_FACTOR_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_IN_U_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_MOLAR_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_PROTON_MASS_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_RELATIVE_ATOMIC_MASS_2018;
ADD_IMPORT extern const struct codata_constant_type TRITON_TO_PROTON_MAG_MOM_RATIO_2018;
ADD_IMPORT extern const struct codata_constant_type UNIFIED_ATOMIC_MASS_UNIT_2018;
ADD_IMPORT extern const struct codata_constant_type VACUUM_ELECTRIC_PERMITTIVITY_2018;
ADD_IMPORT extern const struct codata_constant_type VACUUM_MAG_PERMEABILITY_2018;
ADD_IMPORT extern const struct codata_constant_type VON_KLITZING_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type WEAK_MIXING_ANGLE_2018;
ADD_IMPORT extern const struct codata_constant_type WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT_2018;
ADD_IMPORT extern const struct codata_constant_type W_TO_Z_MASS_RATIO_2018;

ADD_IMPORT extern const int YEAR;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type ALPHA_PARTICLE_RMS_CHARGE_RADIUS;
ADD_IMPORT extern const struct codata_constant_type ANGSTROM_STAR;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_CONSTANT_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_MASS_UNIT_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_1ST_HYPERPOLARIZABILITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_2ND_HYPERPOLARIZABILITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ACTION;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CHARGE_DENSITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_CURRENT;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_DIPOLE_MOM;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_FIELD_GRADIENT;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POLARIZABILITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_POTENTIAL;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ELECTRIC_QUADRUPOLE_MOM;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_ENERGY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_FORCE;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_LENGTH;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_DIPOLE_MOM;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAG_FLUX_DENSITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MAGNETIZABILITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MASS;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_MOMENTUM;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_PERMITTIVITY;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_TIME;
ADD_IMPORT extern const struct codata_constant_type ATOMIC_UNIT_OF_VELOCITY;
ADD_IMPORT extern const struct codata_constant_type AVOGADRO_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_EV_T;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_HZ_T;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_INVERSE_METER_PER_TESLA;
ADD_IMPORT extern const struct codata_constant_type BOHR_MAGNETON_IN_K_T;
ADD_IMPORT extern const struct codata_constant_type BOHR_RADIUS;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_EV_K;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_HZ_K;
ADD_IMPORT extern const struct codata_constant_type BOLTZMANN_CONSTANT_IN_INVERSE_METER_PER_KELVIN;
ADD_IMPORT extern const struct codata_constant_type CHARACTERISTIC_IMPEDANCE_OF_VACUUM;
ADD_IMPORT extern const struct codata_constant_type CLASSICAL_ELECTRON_RADIUS;
ADD_IMPORT extern const struct codata_constant_type COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type CONDUCTANCE_QUANTUM;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_AMPERE_90;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_COULOMB_90;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_FARAD_90;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_HENRY_90;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_JOSEPHSON_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_OHM_90;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_VOLT_90;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_VON_KLITZING_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type CONVENTIONAL_VALUE_OF_WATT_90;
ADD_IMPORT extern const struct codata_constant_type COPPER_X_UNIT;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_NEUTRON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type DEUTERON_RMS_CHARGE_RADIUS;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_CHARGE_TO_MASS_QUOTIENT;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_DEUTERON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_GYROMAG_RATIO_IN_MHZ_T;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_HELION_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_ANOMALY;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_MUON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_NEUTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TAU_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_ALPHA_PARTICLE_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_HELION_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_TRITON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELECTRON_VOLT_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE;
ADD_IMPORT extern const struct codata_constant_type ELEMENTARY_CHARGE_OVER_H_BAR;
ADD_IMPORT extern const struct codata_constant_type FARADAY_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type FERMI_COUPLING_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type FINE_STRUCTURE_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type FIRST_RADIATION_CONSTANT_FOR_SPECTRAL_RADIANCE;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY;
ADD_IMPORT extern const struct codata_constant_type HARTREE_ENERGY_IN_EV;
ADD_IMPORT extern const struct codata_constant_type HARTREE_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HARTREE_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HARTREE_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HARTREE_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HELION_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type HELION_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type HELION_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type HELION_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type HELION_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type HELION_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type HELION_SHIELDING_SHIFT;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HERTZ_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HERTZ_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HERTZ_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HERTZ_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HERTZ_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type HYPERFINE_TRANSITION_FREQUENCY_OF_CS_133;
ADD_IMPORT extern const struct codata_constant_type INVERSE_FINE_STRUCTURE_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_METER_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type INVERSE_OF_CONDUCTANCE_QUANTUM;
ADD_IMPORT extern const struct codata_constant_type JOSEPHSON_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type JOULE_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type JOULE_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type JOULE_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type JOULE_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type JOULE_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type JOULE_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type JOULE_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KELVIN_KILOGRAM_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ATOMIC_MASS_UNIT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_ELECTRON_VOLT_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HARTREE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_HERTZ_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_INVERSE_METER_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_JOULE_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type KILOGRAM_KELVIN_RELATIONSHIP;
ADD_IMPORT extern const struct codata_constant_type LATTICE_PARAMETER_OF_SILICON;
ADD_IMPORT extern const struct codata_constant_type LATTICE_SPACING_OF_IDEAL_SI_220;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_100_KPA;
ADD_IMPORT extern const struct codata_constant_type LOSCHMIDT_CONSTANT_273_15_K_101_325_KPA;
ADD_IMPORT extern const struct codata_constant_type LUMINOUS_EFFICACY;
ADD_IMPORT extern const struct codata_constant_type MAG_FLUX_QUANTUM;
ADD_IMPORT extern const struct codata_constant_type MOLAR_GAS_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type MOLAR_MASS_OF_CARBON_12;
ADD_IMPORT extern const struct codata_constant_type MOLAR_PLANCK_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_100_KPA;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_IDEAL_GAS_273_15_K_101_325_KPA;
ADD_IMPORT extern const struct codata_constant_type MOLAR_VOLUME_OF_SILICON;
ADD_IMPORT extern const struct codata_constant_type MOLYBDENUM_X_UNIT;
ADD_IMPORT extern const struct codata_constant_type MUON_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type MUON_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type MUON_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_ANOMALY;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type MUON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type MUON_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type MUON_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type MUON_NEUTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type MUON_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type MUON_TAU_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ACTION_IN_EV_S;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_ENERGY_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_LENGTH;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MASS;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMENTUM;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_MOMENTUM_IN_MEV_C;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_TIME;
ADD_IMPORT extern const struct codata_constant_type NATURAL_UNIT_OF_VELOCITY;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_GYROMAG_RATIO_IN_MHZ_T;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_MUON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_DIFFERENCE_IN_U;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TAU_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEUTRON_TO_SHIELDED_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION;
ADD_IMPORT extern const struct codata_constant_type NEWTONIAN_CONSTANT_OF_GRAVITATION_OVER_H_BAR_C;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_EV_T;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_INVERSE_METER_PER_TESLA;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_K_T;
ADD_IMPORT extern const struct codata_constant_type NUCLEAR_MAGNETON_IN_MHZ_T;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type PLANCK_CONSTANT_IN_EV_HZ;
ADD_IMPORT extern const struct codata_constant_type PLANCK_LENGTH;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS;
ADD_IMPORT extern const struct codata_constant_type PLANCK_MASS_ENERGY_EQUIVALENT_IN_GEV;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TEMPERATURE;
ADD_IMPORT extern const struct codata_constant_type PLANCK_TIME;
ADD_IMPORT extern const struct codata_constant_type PROTON_CHARGE_TO_MASS_QUOTIENT;
ADD_IMPORT extern const struct codata_constant_type PROTON_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type PROTON_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_GYROMAG_RATIO_IN_MHZ_T;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_MAG_SHIELDING_CORRECTION;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type PROTON_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type PROTON_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type PROTON_MUON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_NEUTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type PROTON_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type PROTON_RMS_CHARGE_RADIUS;
ADD_IMPORT extern const struct codata_constant_type PROTON_TAU_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION;
ADD_IMPORT extern const struct codata_constant_type QUANTUM_OF_CIRCULATION_TIMES_2;
ADD_IMPORT extern const struct codata_constant_type REDUCED_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type REDUCED_MUON_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type REDUCED_NEUTRON_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PLANCK_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PLANCK_CONSTANT_IN_EV_S;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PLANCK_CONSTANT_TIMES_C_IN_MEV_FM;
ADD_IMPORT extern const struct codata_constant_type REDUCED_PROTON_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type REDUCED_TAU_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_C_IN_HZ;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_EV;
ADD_IMPORT extern const struct codata_constant_type RYDBERG_CONSTANT_TIMES_HC_IN_J;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_100_KPA;
ADD_IMPORT extern const struct codata_constant_type SACKUR_TETRODE_CONSTANT_1_K_101_325_KPA;
ADD_IMPORT extern const struct codata_constant_type SECOND_RADIATION_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_GYROMAG_RATIO_IN_MHZ_T;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_HELION_TO_SHIELDED_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_GYROMAG_RATIO_IN_MHZ_T;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDED_PROTON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type SHIELDING_DIFFERENCE_OF_D_AND_P_IN_HD;
ADD_IMPORT extern const struct codata_constant_type SHIELDING_DIFFERENCE_OF_T_AND_P_IN_HT;
ADD_IMPORT extern const struct codata_constant_type SPEED_OF_LIGHT_IN_VACUUM;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ACCELERATION_OF_GRAVITY;
ADD_IMPORT extern const struct codata_constant_type STANDARD_ATMOSPHERE;
ADD_IMPORT extern const struct codata_constant_type STANDARD_STATE_PRESSURE;
ADD_IMPORT extern const struct codata_constant_type STEFAN_BOLTZMANN_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type TAU_COMPTON_WAVELENGTH;
ADD_IMPORT extern const struct codata_constant_type TAU_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type TAU_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type TAU_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type TAU_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type TAU_MUON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type TAU_NEUTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type TAU_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type THOMSON_CROSS_SECTION;
ADD_IMPORT extern const struct codata_constant_type TRITON_ELECTRON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type TRITON_G_FACTOR;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_BOHR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type TRITON_MAG_MOM_TO_NUCLEAR_MAGNETON_RATIO;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_ENERGY_EQUIVALENT_IN_MEV;
ADD_IMPORT extern const struct codata_constant_type TRITON_MASS_IN_U;
ADD_IMPORT extern const struct codata_constant_type TRITON_MOLAR_MASS;
ADD_IMPORT extern const struct codata_constant_type TRITON_PROTON_MASS_RATIO;
ADD_IMPORT extern const struct codata_constant_type TRITON_RELATIVE_ATOMIC_MASS;
ADD_IMPORT extern const struct codata_constant_type TRITON_TO_PROTON_MAG_MOM_RATIO;
ADD_IMPORT extern const struct codata_constant_type UNIFIED_ATOMIC_MASS_UNIT;
ADD_IMPORT extern const struct codata_constant_type VACUUM_ELECTRIC_PERMITTIVITY;
ADD_IMPORT extern const struct codata_constant_type VACUUM_MAG_PERMEABILITY;
ADD_IMPORT extern const struct codata_constant_type VON_KLITZING_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type WEAK_MIXING_ANGLE;
ADD_IMPORT extern const struct codata_constant_type WIEN_FREQUENCY_DISPLACEMENT_LAW_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type WIEN_WAVELENGTH_DISPLACEMENT_LAW_CONSTANT;
ADD_IMPORT extern const struct codata_constant_type W_TO_Z_MASS_RATIO;

#endif