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1 | // Boost.Units - A C++ library for zero-overhead dimensional analysis and |
2 | // unit/quantity manipulation and conversion | |
3 | // | |
4 | // Copyright (C) 2003-2008 Matthias Christian Schabel | |
5 | // Copyright (C) 2008 Steven Watanabe | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See | |
8 | // accompanying file LICENSE_1_0.txt or copy at | |
9 | // http://www.boost.org/LICENSE_1_0.txt) | |
10 | ||
11 | #ifndef BOOST_UNITS_CODATA_UNIVERSAL_CONSTANTS_HPP | |
12 | #define BOOST_UNITS_CODATA_UNIVERSAL_CONSTANTS_HPP | |
13 | ||
14 | #include <boost/units/quantity.hpp> | |
15 | #include <boost/units/static_constant.hpp> | |
16 | ||
17 | #include <boost/units/systems/detail/constants.hpp> | |
18 | #include <boost/units/systems/si/capacitance.hpp> | |
19 | #include <boost/units/systems/si/current.hpp> | |
20 | #include <boost/units/systems/si/energy.hpp> | |
21 | #include <boost/units/systems/si/force.hpp> | |
22 | #include <boost/units/systems/si/length.hpp> | |
23 | #include <boost/units/systems/si/mass.hpp> | |
24 | #include <boost/units/systems/si/resistance.hpp> | |
25 | #include <boost/units/systems/si/temperature.hpp> | |
26 | #include <boost/units/systems/si/time.hpp> | |
27 | #include <boost/units/systems/si/velocity.hpp> | |
28 | #include <boost/units/systems/si/volume.hpp> | |
29 | #include <boost/units/systems/si/codata/typedefs.hpp> | |
30 | ||
31 | /// \file | |
32 | /// CODATA recommended values of fundamental universal constants | |
33 | /// using CODATA 2006 values as of 2007/03/30 | |
34 | ||
35 | namespace boost { | |
36 | ||
37 | namespace units { | |
38 | ||
39 | namespace si { | |
40 | ||
41 | namespace constants { | |
42 | ||
43 | namespace codata { | |
44 | ||
45 | /// CODATA recommended values of the fundamental physical constants: NIST SP 961 | |
46 | ||
47 | // UNIVERSAL | |
48 | /// speed of light | |
49 | BOOST_UNITS_PHYSICAL_CONSTANT(c,quantity<velocity>,299792458.0*meters/second,0.0*meters/second); | |
50 | /// magnetic constant (exactly 4 pi x 10^(-7) - error is due to finite precision of pi) | |
51 | BOOST_UNITS_PHYSICAL_CONSTANT(mu_0,quantity<force_over_current_squared>,12.56637061435917295385057353311801153679e-7*newtons/ampere/ampere,0.0*newtons/ampere/ampere); | |
52 | /// electric constant | |
53 | BOOST_UNITS_PHYSICAL_CONSTANT(epsilon_0,quantity<capacitance_over_length>,8.854187817620389850536563031710750260608e-12*farad/meter,0.0*farad/meter); | |
54 | /// characteristic impedance of vacuum | |
55 | BOOST_UNITS_PHYSICAL_CONSTANT(Z_0,quantity<resistance>,376.7303134617706554681984004203193082686*ohm,0.0*ohm); | |
56 | /// Newtonian constant of gravitation | |
57 | BOOST_UNITS_PHYSICAL_CONSTANT(G,quantity<volume_over_mass_time_squared>,6.67428e-11*cubic_meters/kilogram/second/second,6.7e-15*cubic_meters/kilogram/second/second); | |
58 | /// Planck constant | |
59 | BOOST_UNITS_PHYSICAL_CONSTANT(h,quantity<energy_time>,6.62606896e-34*joule*seconds,3.3e-41*joule*seconds); | |
60 | /// Dirac constant | |
61 | BOOST_UNITS_PHYSICAL_CONSTANT(hbar,quantity<energy_time>,1.054571628e-34*joule*seconds,5.3e-42*joule*seconds); | |
62 | /// Planck mass | |
63 | BOOST_UNITS_PHYSICAL_CONSTANT(m_P,quantity<mass>,2.17644e-8*kilograms,1.1e-12*kilograms); | |
64 | /// Planck temperature | |
65 | BOOST_UNITS_PHYSICAL_CONSTANT(T_P,quantity<temperature>,1.416785e32*kelvin,7.1e27*kelvin); | |
66 | /// Planck length | |
67 | BOOST_UNITS_PHYSICAL_CONSTANT(l_P,quantity<length>,1.616252e-35*meters,8.1e-40*meters); | |
68 | /// Planck time | |
69 | BOOST_UNITS_PHYSICAL_CONSTANT(t_P,quantity<time>,5.39124e-44*seconds,2.7e-48*seconds); | |
70 | ||
71 | } // namespace codata | |
72 | ||
73 | } // namespace constants | |
74 | ||
75 | } // namespace si | |
76 | ||
77 | } // namespace units | |
78 | ||
79 | } // namespace boost | |
80 | ||
81 | #endif // BOOST_UNITS_CODATA_UNIVERSAL_CONSTANTS_HPP |