//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <set>

// class set

// pair<iterator,iterator>             equal_range(const key_type& k);
// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;

#include <set>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"
#include "private_constructor.h"

int main(int, char**) {
  {
    typedef int V;
    typedef std::set<int> M;
    {
      typedef std::pair<M::iterator, M::iterator> R;
      V ar[] = {5, 7, 9, 11, 13, 15, 17, 19};
      M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(5);
      assert(r.first == std::next(m.begin(), 0));
      assert(r.second == std::next(m.begin(), 1));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 1));
      assert(r.second == std::next(m.begin(), 2));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 2));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(11);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 4));
      r = m.equal_range(13);
      assert(r.first == std::next(m.begin(), 4));
      assert(r.second == std::next(m.begin(), 5));
      r = m.equal_range(15);
      assert(r.first == std::next(m.begin(), 5));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(17);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 7));
      r = m.equal_range(19);
      assert(r.first == std::next(m.begin(), 7));
      assert(r.second == std::next(m.begin(), 8));
      r = m.equal_range(4);
      assert(r.first == std::next(m.begin(), 0));
      assert(r.second == std::next(m.begin(), 0));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 1));
      assert(r.second == std::next(m.begin(), 1));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 2));
      assert(r.second == std::next(m.begin(), 2));
      r = m.equal_range(10);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(12);
      assert(r.first == std::next(m.begin(), 4));
      assert(r.second == std::next(m.begin(), 4));
      r = m.equal_range(14);
      assert(r.first == std::next(m.begin(), 5));
      assert(r.second == std::next(m.begin(), 5));
      r = m.equal_range(16);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(18);
      assert(r.first == std::next(m.begin(), 7));
      assert(r.second == std::next(m.begin(), 7));
      r = m.equal_range(20);
      assert(r.first == std::next(m.begin(), 8));
      assert(r.second == std::next(m.begin(), 8));
    }
    {
      typedef std::pair<M::const_iterator, M::const_iterator> R;
      V ar[] = {5, 7, 9, 11, 13, 15, 17, 19};
      const M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(5);
      assert(r.first == std::next(m.begin(), 0));
      assert(r.second == std::next(m.begin(), 1));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 1));
      assert(r.second == std::next(m.begin(), 2));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 2));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(11);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 4));
      r = m.equal_range(13);
      assert(r.first == std::next(m.begin(), 4));
      assert(r.second == std::next(m.begin(), 5));
      r = m.equal_range(15);
      assert(r.first == std::next(m.begin(), 5));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(17);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 7));
      r = m.equal_range(19);
      assert(r.first == std::next(m.begin(), 7));
      assert(r.second == std::next(m.begin(), 8));
      r = m.equal_range(4);
      assert(r.first == std::next(m.begin(), 0));
      assert(r.second == std::next(m.begin(), 0));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 1));
      assert(r.second == std::next(m.begin(), 1));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 2));
      assert(r.second == std::next(m.begin(), 2));
      r = m.equal_range(10);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(12);
      assert(r.first == std::next(m.begin(), 4));
      assert(r.second == std::next(m.begin(), 4));
      r = m.equal_range(14);
      assert(r.first == std::next(m.begin(), 5));
      assert(r.second == std::next(m.begin(), 5));
      r = m.equal_range(16);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(18);
      assert(r.first == std::next(m.begin(), 7));
      assert(r.second == std::next(m.begin(), 7));
      r = m.equal_range(20);
      assert(r.first == std::next(m.begin(), 8));
      assert(r.second == std::next(m.begin(), 8));
    }
  }
#if TEST_STD_VER >= 11
  {
    typedef int V;
    typedef std::set<int, std::less<int>, min_allocator<int>> M;
    typedef std::pair<M::iterator, M::iterator> R;
    V ar[] = {5, 7, 9, 11, 13, 15, 17, 19};
    M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
    R r = m.equal_range(5);
    assert(r.first == std::next(m.begin(), 0));
    assert(r.second == std::next(m.begin(), 1));
    r = m.equal_range(7);
    assert(r.first == std::next(m.begin(), 1));
    assert(r.second == std::next(m.begin(), 2));
    r = m.equal_range(9);
    assert(r.first == std::next(m.begin(), 2));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(11);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 4));
    r = m.equal_range(13);
    assert(r.first == std::next(m.begin(), 4));
    assert(r.second == std::next(m.begin(), 5));
    r = m.equal_range(15);
    assert(r.first == std::next(m.begin(), 5));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(17);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 7));
    r = m.equal_range(19);
    assert(r.first == std::next(m.begin(), 7));
    assert(r.second == std::next(m.begin(), 8));
    r = m.equal_range(4);
    assert(r.first == std::next(m.begin(), 0));
    assert(r.second == std::next(m.begin(), 0));
    r = m.equal_range(6);
    assert(r.first == std::next(m.begin(), 1));
    assert(r.second == std::next(m.begin(), 1));
    r = m.equal_range(8);
    assert(r.first == std::next(m.begin(), 2));
    assert(r.second == std::next(m.begin(), 2));
    r = m.equal_range(10);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(12);
    assert(r.first == std::next(m.begin(), 4));
    assert(r.second == std::next(m.begin(), 4));
    r = m.equal_range(14);
    assert(r.first == std::next(m.begin(), 5));
    assert(r.second == std::next(m.begin(), 5));
    r = m.equal_range(16);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(18);
    assert(r.first == std::next(m.begin(), 7));
    assert(r.second == std::next(m.begin(), 7));
    r = m.equal_range(20);
    assert(r.first == std::next(m.begin(), 8));
    assert(r.second == std::next(m.begin(), 8));
  }
#endif
#if TEST_STD_VER > 11
  {
    typedef int V;
    typedef std::set<V, std::less<>> M;
    {
      typedef std::pair<M::iterator, M::iterator> R;
      V ar[] = {5, 7, 9, 11, 13, 15, 17, 19};
      M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(5);
      assert(r.first == std::next(m.begin(), 0));
      assert(r.second == std::next(m.begin(), 1));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 1));
      assert(r.second == std::next(m.begin(), 2));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 2));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(11);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 4));
      r = m.equal_range(13);
      assert(r.first == std::next(m.begin(), 4));
      assert(r.second == std::next(m.begin(), 5));
      r = m.equal_range(15);
      assert(r.first == std::next(m.begin(), 5));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(17);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 7));
      r = m.equal_range(19);
      assert(r.first == std::next(m.begin(), 7));
      assert(r.second == std::next(m.begin(), 8));
      r = m.equal_range(4);
      assert(r.first == std::next(m.begin(), 0));
      assert(r.second == std::next(m.begin(), 0));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 1));
      assert(r.second == std::next(m.begin(), 1));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 2));
      assert(r.second == std::next(m.begin(), 2));
      r = m.equal_range(10);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(12);
      assert(r.first == std::next(m.begin(), 4));
      assert(r.second == std::next(m.begin(), 4));
      r = m.equal_range(14);
      assert(r.first == std::next(m.begin(), 5));
      assert(r.second == std::next(m.begin(), 5));
      r = m.equal_range(16);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(18);
      assert(r.first == std::next(m.begin(), 7));
      assert(r.second == std::next(m.begin(), 7));
      r = m.equal_range(20);
      assert(r.first == std::next(m.begin(), 8));
      assert(r.second == std::next(m.begin(), 8));
    }
  }
  {
    typedef PrivateConstructor V;
    typedef std::set<V, std::less<>> M;
    typedef std::pair<M::iterator, M::iterator> R;

    M m;
    m.insert(V::make(5));
    m.insert(V::make(7));
    m.insert(V::make(9));
    m.insert(V::make(11));
    m.insert(V::make(13));
    m.insert(V::make(15));
    m.insert(V::make(17));
    m.insert(V::make(19));

    R r = m.equal_range(5);
    assert(r.first == std::next(m.begin(), 0));
    assert(r.second == std::next(m.begin(), 1));
    r = m.equal_range(7);
    assert(r.first == std::next(m.begin(), 1));
    assert(r.second == std::next(m.begin(), 2));
    r = m.equal_range(9);
    assert(r.first == std::next(m.begin(), 2));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(11);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 4));
    r = m.equal_range(13);
    assert(r.first == std::next(m.begin(), 4));
    assert(r.second == std::next(m.begin(), 5));
    r = m.equal_range(15);
    assert(r.first == std::next(m.begin(), 5));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(17);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 7));
    r = m.equal_range(19);
    assert(r.first == std::next(m.begin(), 7));
    assert(r.second == std::next(m.begin(), 8));
    r = m.equal_range(4);
    assert(r.first == std::next(m.begin(), 0));
    assert(r.second == std::next(m.begin(), 0));
    r = m.equal_range(6);
    assert(r.first == std::next(m.begin(), 1));
    assert(r.second == std::next(m.begin(), 1));
    r = m.equal_range(8);
    assert(r.first == std::next(m.begin(), 2));
    assert(r.second == std::next(m.begin(), 2));
    r = m.equal_range(10);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(12);
    assert(r.first == std::next(m.begin(), 4));
    assert(r.second == std::next(m.begin(), 4));
    r = m.equal_range(14);
    assert(r.first == std::next(m.begin(), 5));
    assert(r.second == std::next(m.begin(), 5));
    r = m.equal_range(16);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(18);
    assert(r.first == std::next(m.begin(), 7));
    assert(r.second == std::next(m.begin(), 7));
    r = m.equal_range(20);
    assert(r.first == std::next(m.begin(), 8));
    assert(r.second == std::next(m.begin(), 8));
  }
#endif

  return 0;
}