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// Copyright (C) 2001, 2007, 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/>.

// 25.3.3 [lib.alg.binary.search] Binary search algorithms.

#include <algorithm>

#include <testsuite_hooks.h>

bool test __attribute__((unused)) = true;

const int A[] = {1, 2, 3, 3, 3, 5, 8};

const int C[] = {8, 5, 3, 3, 3, 2, 1};

const int N = sizeof(A) / sizeof(int);

// A comparison, equalivalent to std::greater<int> without the

// dependency on <functional>.

struct gt

{

    bool

    operator()(const int& x, const int& y) const

    { return x > y; }

};

// 25.3.3.4 binary_search, with and without comparison predicate

void

test04()

{

    using std::binary_search;

    const int first = A[0];

    const int last = A[N - 1];

    VERIFY(binary_search(A, A + N, 5));

    VERIFY(binary_search(A, A + N, first));

    VERIFY(binary_search(A, A + N, last));

    VERIFY(!binary_search(A, A + N, 4));

    VERIFY(binary_search(C, C + N, 5, gt()));

    VERIFY(binary_search(C, C + N, first, gt()));

    VERIFY(binary_search(C, C + N, last, gt()));

    VERIFY(!binary_search(C, C + N, 4, gt()));

}

int

main()

{

  test04();

  return 0;

}