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+// Boost.Units - A C++ library for zero-overhead dimensional analysis and
+// unit/quantity manipulation and conversion
+//
+// Copyright (C) 2003-2008 Matthias Christian Schabel
+// Copyright (C) 2008 Steven Watanabe
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
+#define BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
+
+///
+/// \file
+/// \brief CODATA recommended values of fundamental electromagnetic constants.
+/// \details CODATA recommended values of the fundamental physical constants: NIST SP 961
+/// CODATA 2006 values as of 2007/03/30
+///
+
+#include <boost/units/static_constant.hpp>
+
+#include <boost/units/systems/detail/constants.hpp>
+#include <boost/units/systems/si/conductance.hpp>
+#include <boost/units/systems/si/current.hpp>
+#include <boost/units/systems/si/electric_charge.hpp>
+#include <boost/units/systems/si/electric_potential.hpp>
+#include <boost/units/systems/si/energy.hpp>
+#include <boost/units/systems/si/frequency.hpp>
+#include <boost/units/systems/si/magnetic_flux.hpp>
+#include <boost/units/systems/si/magnetic_flux_density.hpp>
+#include <boost/units/systems/si/resistance.hpp>
+
+#include <boost/units/systems/si/codata/typedefs.hpp>
+
+namespace boost {
+
+namespace units {
+
+namespace si {
+
+namespace constants {
+
+namespace codata {
+
+// ELECTROMAGNETIC
+/// elementary charge
+BOOST_UNITS_PHYSICAL_CONSTANT(e,quantity<electric_charge>,1.602176487e-19*coulombs,4.0e-27*coulombs);
+/// elementary charge to Planck constant ratio
+BOOST_UNITS_PHYSICAL_CONSTANT(e_over_h,quantity<current_over_energy>,2.417989454e14*amperes/joule,6.0e6*amperes/joule);
+/// magnetic flux quantum
+BOOST_UNITS_PHYSICAL_CONSTANT(Phi_0,quantity<magnetic_flux>,2.067833667e-15*webers,5.2e-23*webers);
+/// conductance quantum
+BOOST_UNITS_PHYSICAL_CONSTANT(G_0,quantity<conductance>,7.7480917004e-5*siemens,5.3e-14*siemens);
+/// Josephson constant
+BOOST_UNITS_PHYSICAL_CONSTANT(K_J,quantity<frequency_over_electric_potential>,483597.891e9*hertz/volt,1.2e7*hertz/volt);
+/// von Klitzing constant
+BOOST_UNITS_PHYSICAL_CONSTANT(R_K,quantity<resistance>,25812.807557*ohms,1.77e-5*ohms);
+/// Bohr magneton
+BOOST_UNITS_PHYSICAL_CONSTANT(mu_B,quantity<energy_over_magnetic_flux_density>,927.400915e-26*joules/tesla,2.3e-31*joules/tesla);
+/// nuclear magneton
+BOOST_UNITS_PHYSICAL_CONSTANT(mu_N,quantity<energy_over_magnetic_flux_density>,5.05078324e-27*joules/tesla,1.3e-34*joules/tesla);
+
+} // namespace codata
+
+} // namespace constants
+
+} // namespace si
+
+} // namespace units
+
+} // namespace boost
+
+#endif // BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP