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// { dg-do run { target c++17 } }
// Copyright (C) 2019-2024 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 29.8.9 [transform.exclusive.scan]
#include <numeric>
#include <iterator>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
int a[] = {1, 2, 3, 4, 5, 6, 7};
using __gnu_test::test_container;
using __gnu_test::input_iterator_wrapper;
using __gnu_test::output_iterator_wrapper;
/*
template<class InputIterator, class OutputIterator, class T,
class BinaryOperation, class UnaryOperation>
OutputIterator
transform_exclusive_scan(InputIterator, InputIterator, OutputIterator, T,
BinaryOperation, UnaryOperation);
*/
void
test01()
{
int out[7];
test_container<int, output_iterator_wrapper> co(out);
test_container<int, input_iterator_wrapper> ca(a);
auto end = std::transform_exclusive_scan(ca.begin(), ca.end(), co.begin(), 5,
std::multiplies<>(),
std::negate<>());
static_assert(std::is_same_v<decltype(end), decltype(co.begin())>);
VERIFY( end.ptr == out+7 );
VERIFY( out[0] == 5 );
VERIFY( out[1] == -5 );
VERIFY( out[2] == 10 );
VERIFY( out[3] == -30 );
VERIFY( out[4] == 120 );
VERIFY( out[5] == -600 );
VERIFY( out[6] == 3600 );
}
int
main()
{
test01();
}
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