1 // Copyright (C) 2014 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 // { dg-require-cmath "" }
19 // { dg-options "-std=gnu++11" }
26 #include <testsuite_counter_type.h>
27 #include <testsuite_hooks.h>
31 bool test
__attribute__((unused
)) = true;
33 using __gnu_test::counter_type
;
34 const std::size_t nb_values
= 1000;
36 std::random_device dev
;
37 std::uniform_int_distribution
<int> dist
;
38 std::vector
<counter_type
> values
;
39 values
.reserve(nb_values
);
40 for (std::size_t i
= 0; i
!= nb_values
; ++i
)
41 values
.push_back(dist(dev
));
43 std::make_heap(values
.begin(), values
.end());
45 counter_type::reset();
47 std::sort_heap(values
.begin(), values
.end());
49 VERIFY( counter_type::less_compare_count
<= 2.0 * nb_values
* std::log2(nb_values
) );