pressure.h

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// Copyright (c) FIRST and other WPILib contributors.
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// the WPILib BSD license file in the root directory of this project.
 
// Copyright (c) 2016 Nic Holthaus
//
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#pragma once
 
#include "units/base.h"
#include "units/force.h"
#include "units/length.h"
 
namespace units {
/**
 * @namespace units::pressure
 * @brief namespace for unit types and containers representing pressure values
 * @details The SI unit for pressure is `pascals`, and the corresponding
 *          `base_unit` category is `pressure_unit`.
 * @anchor pressureContainers
 * @sa See unit_t for more information on unit type containers.
 */
#if !defined(DISABLE_PREDEFINED_UNITS) || \
    defined(ENABLE_PREDEFINED_PRESSURE_UNITS)
UNIT_ADD_WITH_METRIC_PREFIXES(
    pressure, pascal, pascals, Pa,
    unit<std::ratio<1>, units::category::pressure_unit>)
UNIT_ADD(pressure, bar, bars, bar, unit<std::ratio<100>, kilo<pascals>>)
UNIT_ADD(pressure, mbar, mbars, mbar, unit<std::ratio<1>, milli<bar>>)
UNIT_ADD(pressure, atmosphere, atmospheres, atm,
         unit<std::ratio<101325>, pascals>)
UNIT_ADD(pressure, pounds_per_square_inch, pounds_per_square_inch, psi,
         compound_unit<force::pounds, inverse<squared<length::inch>>>)
UNIT_ADD(pressure, torr, torrs, torr, unit<std::ratio<1, 760>, atmospheres>)
 
UNIT_ADD_CATEGORY_TRAIT(pressure)
#endif
 
using namespace pressure;
}  // namespace units