text: // The MIT License (MIT)
  //
  // Copyright (c) 2018 Mateusz Pusz
  //
  // 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 Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  //
  // 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 FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  
  #pragma once
  
  // IWYU pragma: begin_exports
  #include <units/isq/dimensions/luminance.h>
  #include <units/quantity.h>
  #include <units/symbol_text.h>
  // IWYU pragma: end_exports
  
  #include <units/isq/si/length.h>
  #include <units/isq/si/luminous_intensity.h>
  #include <units/unit.h>
  
  namespace units::isq::si {
  
  struct candela_per_metre_sq : unit<candela_per_metre_sq> {};
  struct dim_luminance : isq::dim_luminance<dim_luminance, candela_per_metre_sq, dim_luminous_intensity, dim_length> {};
  
  template<UnitOf<dim_luminance> U, Representation Rep = double>
  using luminance = quantity<dim_luminance, U, Rep>;
  
  #ifndef UNITS_NO_LITERALS
  
  inline namespace literals {
  
  // cd/m²
  constexpr auto operator"" _q_cd_per_m2(unsigned long long l) { gsl_ExpectsAudit(std::in_range<std::int64_t>(l)); return luminance<candela_per_metre_sq, std::int64_t>(static_cast<std::int64_t>(l)); }
  constexpr auto operator"" _q_cd_per_m2(long double l) { return luminance<candela_per_metre_sq, long double>(l); }
  
  }  // namespace literals
  
  #endif // UNITS_NO_LITERALS
  
  }  // namespace units::isq::si
  
  #ifndef UNITS_NO_ALIASES
  
  namespace units::aliases::isq::si::inline luminance {
  
  template<Representation Rep = double> using cd_per_m2 = units::isq::si::luminance<units::isq::si::candela_per_metre_sq, Rep>;
  
  }  // namespace units::aliases::isq::si::inline luminance
  
  #endif // UNITS_NO_ALIASES
  