concentration.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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// of this software and associated documentation files (the "Software"), to deal
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#pragma once
 
#include "units/base.h"
 
namespace units {
/**
 * @namespace units::concentration
 * @brief namespace for unit types and containers representing concentration
 *        values
 * @details The SI unit for concentration is `parts_per_million`, and the
 *          corresponding `base_unit` category is `scalar_unit`.
 * @anchor concentrationContainers
 * @sa See unit_t for more information on unit type containers.
 */
#if !defined(DISABLE_PREDEFINED_UNITS) || \
    defined(ENABLE_PREDEFINED_CONCENTRATION_UNITS)
UNIT_ADD(concentration, ppm, parts_per_million, ppm,
         unit<std::ratio<1, 1000000>, units::category::scalar_unit>)
UNIT_ADD(concentration, ppb, parts_per_billion, ppb,
         unit<std::ratio<1, 1000>, parts_per_million>)
UNIT_ADD(concentration, ppt, parts_per_trillion, ppt,
         unit<std::ratio<1, 1000>, parts_per_billion>)
UNIT_ADD(concentration, percent, percent, pct,
         unit<std::ratio<1, 100>, units::category::scalar_unit>)
 
UNIT_ADD_CATEGORY_TRAIT(concentration)
#endif
 
using namespace concentration;
}  // namespace units