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// Copyright (C) 2005, 2009 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/>.
 
// 25.3.4 [lib.alg.merge]
 
#include <algorithm>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
 
using __gnu_test::test_container;
using __gnu_test::bidirectional_iterator_wrapper;
using std::inplace_merge;
 
typedef test_container<int, bidirectional_iterator_wrapper> container;
 
void 
test1()
{
  int array[] = { 1 };
  container con1(array, array);
  inplace_merge(con1.begin(), con1.end(), con1.end());
  container con2(array, array + 1);
  inplace_merge(con2.begin(), con2.end(), con2.end());
  inplace_merge(con2.begin(), con2.begin(), con2.end());
}
 
void 
test2()
{
  bool test __attribute__((unused)) = true;
 
  int array[] = { 0, 2, 4, 1, 3, 5 };
  container con(array, array + 6);
  inplace_merge(con.begin(), con.it(3), con.end());
  VERIFY( array[0] == 0 && array[1] == 1 && array[2] == 2
	  && array[3] == 3 && array[4] == 4 && array[5] == 5 );
}
 
struct S
{
  int a;
  int b;
  S(int _a, int _b) : a(_a), b(_b) { }
  S() { }
  bool 
  operator<(const S& _s) const 
  { return a < _s.a; }
};
 
void 
test3()
{
  bool test __attribute__((unused)) = true;
 
  S s[4];
  s[0].a = 0;
  s[1].a = 1;
  s[2].a = 0;
  s[3].a = 1;
  s[0].b = 0;
  s[1].b = 0;
  s[2].b = 1;
  s[3].b = 1;
  inplace_merge(s, s + 2, s + 4);
  VERIFY( s[0].b == 0 && s[1].b == 1 && s[2].b == 0 && s[3].b == 1 );
}
 
int 
main()
{
  test1();
  test2();
  test3();
  return 0;
}