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// Copyright (C) 2020-2023 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 "-std=gnu++2a" }
// { dg-do run { target c++2a } }
#include <algorithm>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
using __gnu_test::test_container;
using __gnu_test::test_range;
using __gnu_test::input_iterator_wrapper;
using __gnu_test::forward_iterator_wrapper;
namespace ranges = std::ranges;
struct X { int i; };
void
test01()
{
X x[] = { {2}, {2}, {6}, {8}, {10}, {11}, {2} };
auto res = ranges::count(x, x+7, 2, &X::i);
VERIFY( res == 3 );
res = ranges::count(x, x+7, 8, &X::i);
VERIFY( res == 1 );
res = ranges::count(x, x+7, 9, &X::i);
VERIFY( res == 0 );
test_container<X, forward_iterator_wrapper> c(x);
res = ranges::count(c, 6, &X::i);
VERIFY( res == 1 );
res = ranges::count(c, 9, &X::i);
VERIFY( res == 0 );
test_range<X, input_iterator_wrapper> r(x);
res = ranges::count(r, 2, &X::i);
VERIFY( res == 3 );
r.bounds.first = x;
res = ranges::count(r, 9, &X::i);
VERIFY( res == 0 );
}
struct Y { int i; int j; };
void
test02()
{
static constexpr Y y[] = { {1,2}, {2,4}, {3,6}, {1,6} };
static_assert(ranges::count(y, 6, &Y::j) == 2);
static_assert(ranges::count(y, 5, &Y::j) == 0);
}
int
main()
{
test01();
test02();
}
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