area.h

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// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.
 
// Copyright (c) 2016 Nic Holthaus
//
// The MIT License (MIT)
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#pragma once
 
#include "units/base.h"
#include "units/length.h"
 
namespace units {
/**
 * @namespace units::area
 * @brief namespace for unit types and containers representing area values
 * @details The SI unit for area is `square_meters`, and the corresponding
 *          `base_unit` category is `area_unit`.
 * @anchor areaContainers
 * @sa See unit_t for more information on unit type containers.
 */
#if !defined(DISABLE_PREDEFINED_UNITS) || defined(ENABLE_PREDEFINED_AREA_UNITS)
UNIT_ADD(area, square_meter, square_meters, sq_m,
         unit<std::ratio<1>, units::category::area_unit>)
UNIT_ADD(area, square_foot, square_feet, sq_ft, squared<length::feet>)
UNIT_ADD(area, square_inch, square_inches, sq_in, squared<length::inch>)
UNIT_ADD(area, square_mile, square_miles, sq_mi, squared<length::miles>)
UNIT_ADD(area, square_kilometer, square_kilometers, sq_km,
         squared<length::kilometers>)
UNIT_ADD(area, hectare, hectares, ha, unit<std::ratio<10000>, square_meters>)
UNIT_ADD(area, acre, acres, acre, unit<std::ratio<43560>, square_feet>)
 
UNIT_ADD_CATEGORY_TRAIT(area)
#endif
 
using namespace area;
}  // namespace units