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// { dg-options "-std=gnu++17" }
// { dg-do run { target c++17 } }
// Copyright (C) 2019-2020 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/>.
#include <algorithm>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
void test01()
{
using __gnu_test::test_container;
using __gnu_test::input_iterator_wrapper;
int array[5] = { 1, 2, 3, 4, 5 };
test_container<int, input_iterator_wrapper> con(array);
int sum = 0;
struct Func
{
Func(int& i) : i(i) { }
Func(Func&&) = default;
Func& operator=(Func&&) = delete;
void operator()(int n) const { i += n; }
int& i;
};
struct Size
{
Size(short v) : val(v) { }
operator short() const { return val; }
short val;
};
auto res = std::for_each_n(con.begin(), Size(con.size()), Func(sum));
VERIFY( res == con.end() );
VERIFY( sum == 15 );
}
void
test02()
{
using __gnu_test::test_container;
using __gnu_test::random_access_iterator_wrapper;
int array[5] = { 2, 4, 6, 8, 10 };
test_container<int, random_access_iterator_wrapper> con(array);
int prod = 1;
struct Func
{
Func(int& i) : i(i) { }
Func(Func&&) = default;
Func& operator=(Func&&) = delete;
void operator()(int n) const { i *= n; }
int& i;
};
struct Size
{
Size(short v) : val(v) { }
operator short() const { return val; }
short val;
};
auto res = std::for_each_n(con.begin(), Size(con.size()), Func(prod));
VERIFY( res == con.end() );
VERIFY( prod == 3840 );
}
int main()
{
test01();
test02();
}
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