bmat-fastest.hpp

//
// libsemigroups - C++ library for semigroups and monoids
// Copyright (C) 2021-2025 James D. Mitchell
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
 
// This file contains the alias BMatFastest, and is separate from matrix.hpp,
// bmat.hpp, and bmat8.hpp because these headers don't require each other.
 
#ifndef LIBSEMIGROUPS_BMAT_FASTEST_HPP_
#define LIBSEMIGROUPS_BMAT_FASTEST_HPP_
 
#include <cstddef>      // for size_t
#include <type_traits>  // for conditional_t
 
#include "config.hpp"   // for LIBSEMIGROUPS_HPCOMBI_ENABLED
#include "hpcombi.hpp"  // for HPCombi::BMat8
#include "matrix.hpp"   // for BMat
 
namespace libsemigroups {
  class BMat8;  // forward decl
 
  namespace detail {
    template <size_t N>
    struct BMatFastestHelper {
#ifdef LIBSEMIGROUPS_HPCOMBI_ENABLED
      using type = std::conditional_t<(N > 8), BMat<N>, HPCombi::BMat8>;
#else
      using type = std::conditional_t<(N > 8), BMat<N>, BMat8>;
#endif
    };
  }  // namespace detail

  // TODO(later) example
  template <size_t N>
  using BMatFastest = typename detail::BMatFastestHelper<N>::type;
 
}  // namespace libsemigroups
#endif  // LIBSEMIGROUPS_BMAT_FASTEST_HPP_