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// Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010

// 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/>.

// { dg-options "-DTEST_DEPTH=10" { target simulator } }

// 25 algorithms, search_n

#include <algorithm>

#include <functional>

#include <testsuite_hooks.h>

#include <testsuite_iterators.h>

#ifndef TEST_DEPTH

#define TEST_DEPTH 14

#endif

int array1[11] = {0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0};

int array2[TEST_DEPTH];

bool

pred(int i, int j)

{

  return i == j;

}

bool

lexstep(int* start, int length)

{

  int i = 0;

  int carry = 1;

  while(i < length && carry)

    {

      if(start[i] == 1)

        start[i] = 0;

      else

        {

          start[i] = 1;

          carry = 0;

        }

      i++;

    }

  return !carry;

}

int main()

{

  using __gnu_test::test_container;

  using __gnu_test::random_access_iterator_wrapper;

  using __gnu_test::bidirectional_iterator_wrapper;

  using __gnu_test::forward_iterator_wrapper;

  using std::search_n;

  test_container<int,forward_iterator_wrapper> con(array1,array1 + 10);

  VERIFY(search_n(con.end(), con.end(), 0, 1) == con.end());

  VERIFY(search_n(con.end(), con.end(), 1, 1) == con.end());

  VERIFY(search_n(con.begin(), con.end(), 1, 1).ptr == array1 + 1);

  VERIFY(search_n(con.begin(), con.end(), 2, 1).ptr == array1 + 4);

  VERIFY(search_n(con.begin(), con.end(), 3, 1).ptr == array1 + 7);

  VERIFY(search_n(con.begin(), con.end(), 3, 0) == con.end());

  // Now do a brute-force comparison of the different types

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

    {

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

        array2[i] = 0;

      do {

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

          {

            test_container<int, forward_iterator_wrapper>

              forwardcon(array2, array2 + i);

            test_container<int, random_access_iterator_wrapper>

              randomcon(array2, array2 + i);

            test_container<int, bidirectional_iterator_wrapper>

              bidircon(array2, array2 + i);

            int* t1 = search_n(forwardcon.begin(),

                               forwardcon.end(), j, 1).ptr;

            int* t2 = search_n(forwardcon.begin(),

                               forwardcon.end(), j, 1, pred).ptr;

            int* t3 = search_n(bidircon.begin(),

                               bidircon.end(), j, 1).ptr;

            int* t4 = search_n(bidircon.begin(),

                               bidircon.end(), j, 1, pred).ptr;

            int* t5 = search_n(randomcon.begin(),

                               randomcon.end(), j, 1).ptr;

            int* t6 = search_n(randomcon.begin(),

                               randomcon.end(), j, 1, pred).ptr;

            VERIFY((t1 == t2) && (t2 == t3) && (t3 == t4) &&

                   (t4 == t5) && (t5 == t6));

          }

      }

      while(lexstep(array2, i));

    }

  return 0;

}