mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-12-27 13:05:24 +08:00
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
// { 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/>.
|
|
|
|
// C++17 29.8.3 [reduce]
|
|
|
|
#include <numeric>
|
|
#include <iterator>
|
|
#include <testsuite_hooks.h>
|
|
#include <testsuite_iterators.h>
|
|
|
|
/*
|
|
template<class InputIterator>
|
|
iterator_traits<InputIterator>::value_type
|
|
reduce(InputIterator, InputIterator);
|
|
*/
|
|
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 res = std::reduce(con.begin(), con.end());
|
|
VERIFY( res == 15 );
|
|
}
|
|
|
|
/*
|
|
template<class InputIterator, class T>
|
|
T reduce(InputIterator, InputIterator, T);
|
|
*/
|
|
void
|
|
test02()
|
|
{
|
|
bool b[] = {true, false, true, true, false, true, false, true, true, false};
|
|
int res = std::reduce(std::begin(b), std::end(b), 100);
|
|
VERIFY( res == 106 );
|
|
}
|
|
|
|
/*
|
|
template<class InputIterator, class T>
|
|
T reduce(InputIterator, InputIterator, T);
|
|
template<class InputIterator, class T, class BinaryOperation>
|
|
T reduce(InputIterator, InputIterator, T, BinaryOperation);
|
|
*/
|
|
void
|
|
test03()
|
|
{
|
|
int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
|
|
|
|
auto res = std::reduce(std::begin(a), std::end(a), (short)11);
|
|
static_assert(std::is_same_v<decltype(res), short>);
|
|
VERIFY( res == 66 );
|
|
|
|
auto res2 = std::reduce(std::begin(a), std::end(a), -1l, std::multiplies<>());
|
|
static_assert(std::is_same_v<decltype(res2), long>);
|
|
VERIFY( res2 == -3628800 );
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
test01();
|
|
test02();
|
|
test03();
|
|
}
|