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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <numeric>
// template <InputIterator Iter, MoveConstructible T,
// Callable<auto, const T&, Iter::reference> BinaryOperation>
// requires HasAssign<T, BinaryOperation::result_type>
// && CopyConstructible<BinaryOperation>
// T
// accumulate(Iter first, Iter last, T init, BinaryOperation binary_op);
#include <numeric>
#include <functional>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
template <class Iter, class T>
void
test(Iter first, Iter last, T init, T x)
{
assert(std::accumulate(first, last, init, std::multiplies<T>()) == x);
}
template <class Iter>
void
test()
{
int ia[] = {1, 2, 3, 4, 5, 6};
unsigned sa = sizeof(ia) / sizeof(ia[0]);
test(Iter(ia), Iter(ia), 1, 1);
test(Iter(ia), Iter(ia), 10, 10);
test(Iter(ia), Iter(ia+1), 1, 1);
test(Iter(ia), Iter(ia+1), 10, 10);
test(Iter(ia), Iter(ia+2), 1, 2);
test(Iter(ia), Iter(ia+2), 10, 20);
test(Iter(ia), Iter(ia+sa), 1, 720);
test(Iter(ia), Iter(ia+sa), 10, 7200);
}
int main(int, char**)
{
test<input_iterator<const int*> >();
test<forward_iterator<const int*> >();
test<bidirectional_iterator<const int*> >();
test<random_access_iterator<const int*> >();
test<const int*>();
return 0;
}
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