literals.hpp

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// Copyright (c) 2020--present, The Simons Foundation
// This file is part of TRIQS/nda and is licensed under the Apache License, Version 2.0.
// SPDX-License-Identifier: Apache-2.0
// See LICENSE in the root of this distribution for details.

 
#pragma once
 
#include "./clef.hpp"
 
namespace nda::clef::literals {

 
  // Define literal placeholders starting from the end of the allowed index spectrum.
#define PH(I)                                                                                                                                        \
  (placeholder<63 - (I)> {})

  constexpr auto i_ = PH(0);

  constexpr auto j_ = PH(1);

  constexpr auto k_ = PH(2);

  constexpr auto l_ = PH(3);

  constexpr auto bl_ = PH(4);

  constexpr auto w_ = PH(5);

  constexpr auto iw_ = PH(6);

  constexpr auto W_ = PH(7);

  constexpr auto iW_ = PH(8);

  constexpr auto t_ = PH(9);

  constexpr auto tau_ = PH(10);
 
#undef PH

 
} // namespace nda::clef::literals