units.h

/*
 * Copyright © 2012-2013 Canonical Ltd.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Authored by: Thomas Voß <thomas.voss@canonical.com>
 */
#ifndef LOCATION_SERVICE_COM_UBUNTU_LOCATION_UNITS_UNITS_H_
#define LOCATION_SERVICE_COM_UBUNTU_LOCATION_UNITS_UNITS_H_

#include <boost/units/cmath.hpp>
#include <boost/units/io.hpp>
#include <boost/units/quantity.hpp>
#include <boost/units/systems/angle/degrees.hpp>
#include <boost/units/systems/angle/gradians.hpp>
#include <boost/units/systems/si.hpp>
#include <boost/units/systems/si/prefixes.hpp>

namespace com
{
    namespace ubuntu
    {
        namespace location
        {
            namespace units
            {
                typedef boost::units::degree::plane_angle PlaneAngle;
                static const PlaneAngle Degree;
                static const PlaneAngle Degrees;
                typedef boost::units::gradian::plane_angle Gradians;

                typedef boost::units::si::length Length;
                static const Length Meter;
                static const Length Meters;

                using boost::units::si::kilo;

                typedef boost::units::si::velocity Velocity;
                static const Velocity MeterPerSecond;
                static const Velocity MetersPerSecond;

                template<typename Unit>
                using Quantity = boost::units::quantity<Unit, double>;

                typedef boost::units::si::dimensionless Dimensionless;

                using boost::units::sin;
                using boost::units::cos;
                using boost::units::atan2;

                template<typename Unit>
                inline bool roughly_equals(const Quantity<Unit>& lhs, const Quantity<Unit>& rhs)
                {
                    return std::fabs(lhs.value()-rhs.value()) <= std::numeric_limits<double>::epsilon();
                }
            }
        }
    }
}

#endif // LOCATION_SERVICE_COM_UBUNTU_LOCATION_UNITS_UNITS_H_