// { dg-do compile }
// { dg-require-normal-mode "" }
// { dg-require-normal-namespace "" }

// Copyright (C) 2007-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option)
// any later version.

// This library 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 library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#include <bitset>

#if __cplusplus >= 201103L
# define NOTHROW noexcept
#else
# define NOTHROW
#endif

#if __cplusplus > 202002L
# define CONSTEXPR constexpr
#else
# define CONSTEXPR
#endif

namespace std {
  template <size_t N> class bitset;

  // 23.3.5.3 bitset operations:
  template <size_t N>
    CONSTEXPR
    bitset<N> operator&(const bitset<N>&, const bitset<N>&) NOTHROW;

  template <size_t N>
    CONSTEXPR
    bitset<N> operator|(const bitset<N>&, const bitset<N>&) NOTHROW;

  template <size_t N>
    CONSTEXPR
    bitset<N> operator^(const bitset<N>&, const bitset<N>&) NOTHROW;

#if __STDC_HOSTED__
  template <class charT, class traits, size_t N>
    basic_istream<charT, traits>&
    operator>>(basic_istream<charT, traits>& is, bitset<N>& x);

  template <class charT, class traits, size_t N>
    basic_ostream<charT, traits>&
    operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x);
#endif
}