boost/units/systems/si/prefixes.hpp
// 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) 2007-2008 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_SI_PREFIXES_HPP #define BOOST_UNITS_SI_PREFIXES_HPP #include <boost/units/static_constant.hpp> #include <boost/units/make_scaled_unit.hpp> #include <boost/units/systems/si/dimensionless.hpp> namespace boost { namespace units { namespace si { #define BOOST_UNITS_METRIC_PREFIX(exponent, name) \ typedef make_scaled_unit<dimensionless, scale<10, static_rational<exponent> > >::type name ## _type;\ BOOST_UNITS_STATIC_CONSTANT(name, name ## _type) BOOST_UNITS_METRIC_PREFIX(-24, yocto); BOOST_UNITS_METRIC_PREFIX(-21, zepto); BOOST_UNITS_METRIC_PREFIX(-18, atto); BOOST_UNITS_METRIC_PREFIX(-15, femto); BOOST_UNITS_METRIC_PREFIX(-12, pico); BOOST_UNITS_METRIC_PREFIX(-9, nano); BOOST_UNITS_METRIC_PREFIX(-6, micro); BOOST_UNITS_METRIC_PREFIX(-3, milli); BOOST_UNITS_METRIC_PREFIX(-2, centi); BOOST_UNITS_METRIC_PREFIX(-1, deci); BOOST_UNITS_METRIC_PREFIX(1, deka); BOOST_UNITS_METRIC_PREFIX(2, hecto); BOOST_UNITS_METRIC_PREFIX(3, kilo); BOOST_UNITS_METRIC_PREFIX(6, mega); BOOST_UNITS_METRIC_PREFIX(9, giga); BOOST_UNITS_METRIC_PREFIX(12, tera); BOOST_UNITS_METRIC_PREFIX(15, peta); BOOST_UNITS_METRIC_PREFIX(18, exa); BOOST_UNITS_METRIC_PREFIX(21, zetta); BOOST_UNITS_METRIC_PREFIX(24, yotta); /*BOOST_UNITS_STATIC_CONSTANT(yocto,long double) = (1e-24); ///< metric prefix for 1.0e-24 BOOST_UNITS_STATIC_CONSTANT(zepto,long double) = (1e-21); ///< metric prefix for 1.0e-21 BOOST_UNITS_STATIC_CONSTANT(atto,long double) = (1e-18); ///< metric prefix for 1.0e-18 BOOST_UNITS_STATIC_CONSTANT(femto,long double) = (1e-15); ///< metric prefix for 1.0e-15 BOOST_UNITS_STATIC_CONSTANT(pico,long double) = (1e-12); ///< metric prefix for 1.0e-12 BOOST_UNITS_STATIC_CONSTANT(nano,long double) = (1e-9); ///< metric prefix for 1.0e-9 BOOST_UNITS_STATIC_CONSTANT(micro,long double) = (1e-6); ///< metric prefix for 1.0e-6 BOOST_UNITS_STATIC_CONSTANT(milli,long double) = (1e-3); ///< metric prefix for 1.0e-3 BOOST_UNITS_STATIC_CONSTANT(centi,long double) = (1e-2); ///< metric prefix for 1.0e-2 BOOST_UNITS_STATIC_CONSTANT(deci,long double) = (1e-1); ///< metric prefix for 1.0e-1 BOOST_UNITS_STATIC_CONSTANT(deka,long double) = (1e1); ///< metric prefix for 1.0e+1 BOOST_UNITS_STATIC_CONSTANT(hecto,long double) = (1e2); ///< metric prefix for 1.0e+2 BOOST_UNITS_STATIC_CONSTANT(kilo,long double) = (1e3); ///< metric prefix for 1.0e+3 BOOST_UNITS_STATIC_CONSTANT(mega,long double) = (1e6); ///< metric prefix for 1.0e+6 BOOST_UNITS_STATIC_CONSTANT(giga,long double) = (1e9); ///< metric prefix for 1.0e+9 BOOST_UNITS_STATIC_CONSTANT(tera,long double) = (1e12); ///< metric prefix for 1.0e+12 BOOST_UNITS_STATIC_CONSTANT(peta,long double) = (1e15); ///< metric prefix for 1.0e+15 BOOST_UNITS_STATIC_CONSTANT(exa,long double) = (1e18); ///< metric prefix for 1.0e+18 BOOST_UNITS_STATIC_CONSTANT(zetta,long double) = (1e21); ///< metric prefix for 1.0e+21 BOOST_UNITS_STATIC_CONSTANT(yotta,long double) = (1e24); ///< metric prefix for 1.0e+24 */ } // namespace si } // namespace units } // namespace boost #endif // BOOST_UNITS_SI_PREFIXES_HPP