length.h

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//--------------------------------------------------------------------------------------------------
//
//  UnitConversion: A compile-time c++23 unit conversion library with no dependencies
//
//--------------------------------------------------------------------------------------------------
//
// The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
// and associated documentation files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
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// The above copyright notice and this permission notice shall be included in all copies or
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// Copyright (c) 2016 Nic Holthaus
//
//--------------------------------------------------------------------------------------------------
//
// ATTRIBUTION:
// Parts of this work have been adapted from:
// http://stackoverflow.com/questions/35069778/create-comparison-trait-for-template-classes-whose-parameters-are-in-a-different
// http://stackoverflow.com/questions/28253399/check-traits-for-all-variadic-template-arguments/28253503
// http://stackoverflow.com/questions/36321295/rational-approximation-of-square-root-of-stdratio-at-compile-time?noredirect=1#comment60266601_36321295
// https://github.com/swatanabe/cppnow17-units
//
//--------------------------------------------------------------------------------------------------
//
//
//--------------------------------------------------------------------------------------------------
 
#pragma once
 
#ifndef units_length_h_
#define units_length_h_
 
#include <units/core.h>
 
namespace units
{
    UNIT_ADD_WITH_METRIC_PREFIXES(length, meters, m, conversion_factor<std::ratio<1>, dimension::length>)
    UNIT_ADD(length, feet, ft, conversion_factor<std::ratio<381, 1250>, meters<>>)
    UNIT_ADD(length, inches, in, conversion_factor<std::ratio<1, 12>, feet<>>)
    UNIT_ADD(length, mils, mil, conversion_factor<std::ratio<1, 1000>, inches<>>)
    UNIT_ADD(length, miles, mi, conversion_factor<std::ratio<5280>, feet<>>)
    UNIT_ADD(length, nautical_miles, nmi, conversion_factor<std::ratio<1852>, meters<>>)
    UNIT_ADD(length, astronomical_units, au, conversion_factor<std::ratio<149597870700>, meters<>>)
    UNIT_ADD(length, lightyears, ly, conversion_factor<std::ratio<9460730472580800>, meters<>>)
    UNIT_ADD(length, parsecs, pc, conversion_factor<std::ratio<648000>, astronomical_units<>, std::ratio<-1>>)
    UNIT_ADD(length, angstroms, angstrom, conversion_factor<std::ratio<1, 10>, nanometers<>>)
    UNIT_ADD(length, cubits, cbt, conversion_factor<std::ratio<18>, inches<>>)
    UNIT_ADD(length, fathoms, ftm, conversion_factor<std::ratio<6>, feet<>>)
    UNIT_ADD(length, chains, ch, conversion_factor<std::ratio<66>, feet<>>)
    UNIT_ADD(length, furlongs, fur, conversion_factor<std::ratio<10>, chains<>>)
    UNIT_ADD(length, hands, hand, conversion_factor<std::ratio<4>, inches<>>)
    UNIT_ADD(length, leagues, lea, conversion_factor<std::ratio<3>, miles<>>)
    UNIT_ADD(length, nautical_leagues, nl, conversion_factor<std::ratio<3>, nautical_miles<>>)
    UNIT_ADD(length, yards, yd, conversion_factor<std::ratio<3>, feet<>>)
 
    // british spelling aliases
    template<class Underlying>
    using metres = meters<Underlying>;
 
    UNIT_ADD(length, rods, rod, conversion_factor<std::ratio<1, 4>, chains<>>)
    UNIT_ADD(length, links, li, conversion_factor<std::ratio<1, 100>, chains<>>)
    UNIT_ADD(length, barleycorns, bc, conversion_factor<std::ratio<1, 3>, inches<>>)
    UNIT_ADD(length, nails, nail, conversion_factor<std::ratio<1, 16>, yards<>>)
    UNIT_ADD(length, spans, span, conversion_factor<std::ratio<9>, inches<>>)
    UNIT_ADD(length, picas, pica, conversion_factor<std::ratio<1, 6>, inches<>>)
    UNIT_ADD(length, points, pnt, conversion_factor<std::ratio<1, 72>, inches<>>)
 
    UNIT_ADD_DIMENSION_TRAIT(length, Length)
} // namespace units
 
#endif // units_length_h_