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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/25_algorithms/binary_search/2.cc
1 // Copyright (C) 2001-2019 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // 25.3.3 [lib.alg.binary.search] Binary search algorithms.
21 #include <testsuite_hooks.h>
23 const int A
[] = {1, 2, 3, 3, 3, 5, 8};
24 const int C
[] = {8, 5, 3, 3, 3, 2, 1};
25 const int N
= sizeof(A
) / sizeof(int);
27 // A comparison, equalivalent to std::greater<int> without the
28 // dependency on <functional>.
32 operator()(const int& x
, const int& y
) const
36 // 25.3.3.4 binary_search, with and without comparison predicate
40 using std::binary_search
;
42 const int first
= A
[0];
43 const int last
= A
[N
- 1];
45 VERIFY(binary_search(A
, A
+ N
, 5));
46 VERIFY(binary_search(A
, A
+ N
, first
));
47 VERIFY(binary_search(A
, A
+ N
, last
));
48 VERIFY(!binary_search(A
, A
+ N
, 4));
50 VERIFY(binary_search(C
, C
+ N
, 5, gt()));
51 VERIFY(binary_search(C
, C
+ N
, first
, gt()));
52 VERIFY(binary_search(C
, C
+ N
, last
, gt()));
53 VERIFY(!binary_search(C
, C
+ N
, 4, gt()));