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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/>.

// 25.3.1.2 [lib.stable.sort]

#include <algorithm>

#include <testsuite_hooks.h>

#include <testsuite_iterators.h>

using __gnu_test::test_container;

using __gnu_test::random_access_iterator_wrapper;

using std::stable_sort;

typedef test_container<int, random_access_iterator_wrapper> Container;

void

test1()

{

  int array[]={0};

  Container con(array, array);

  stable_sort(con.begin(), con.end());

}

void

test2()

{

  int array[] = {6, 5, 4, 3, 2, 1, 0};

  Container con(array, array + 7);

  stable_sort(con.begin(), con.end());

  VERIFY(array[0] == 0 && array[1] == 1 && array[2] == 2 &&

         array[3] == 3 && array[4] == 4 && array[5] == 5 &&

         array[6] == 6);

}

struct S

{

  int i;

  int j;

  S() {}

  S(int in)

  {

    if(in > 0)

    {

      i = in;

      j = 1;

    }

    else

    {

      i = -in;

      j = 0;

    }

  }

};

bool

operator<(const S& s1, const S& s2)

{ return s1.i < s2.i; }

void

test3()

{

  S array[] = {-1, -2, 1, 2, -3 ,-5 ,3 , -4, 5, 4};

  test_container<S, random_access_iterator_wrapper> con(array,array + 10);

  stable_sort(con.begin(), con.end());

  for(int i = 0; i < 10; ++i)

    VERIFY(array[i].j == i % 2);

}

int

main()

{

  test1();

  test2();

  test3();

}