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// Copyright (C) 2001 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 2, or (at your option)
// any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without Pred 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 COPYING.  If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
 
// 25.2.12 [lib.alg.partitions] Partitions.
 
#include <algorithm>
#include <functional>
#include <testsuite_hooks.h>
 
bool test __attribute__((unused)) = true;
 
const int A[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17};
const int B[] = {2, 4, 6, 8, 10, 12, 14, 16, 1, 3, 5, 7, 9, 11, 13, 15, 17};
const int N = sizeof(A) / sizeof(int);
 
struct Pred
{
    bool
    operator()(const int& x) const
    { return (x % 2) == 0; }
};
 
// 25.2.12 partition()
void
test01()
{
    using std::partition;
 
    int s1[N];
    std::copy(A, A + N, s1);
 
    Pred pred;
    int* m = partition(s1, s1 + N, pred);
    for (const int* i = s1; i < m; ++i) VERIFY(pred(*i));
    for (const int* i = m; i < s1 + N; ++i) VERIFY(!pred(*i));
}
 
// 25.2.12 stable_partition()
void
test02()
{
    using std::stable_partition;
 
    int s1[N];
    std::copy(A, A + N, s1);
 
    stable_partition(s1, s1 + N, Pred());
    VERIFY(std::equal(s1, s1 + N, B));
}
 
int
main()
{
  test01();
  test02();
 
  return 0;
}