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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
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<InputIterator Iter, class T>
// requires HasEqualTo<Iter::value_type, T>
// constexpr Iter // constexpr after C++17
// find(Iter first, Iter last, const T& value);
#include <algorithm>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
#if TEST_STD_VER > 17
TEST_CONSTEXPR bool test_constexpr() {
int ia[] = {1, 3, 5, 2, 4, 6};
int ib[] = {1, 2, 3, 4, 5, 6};
return (std::find(std::begin(ia), std::end(ia), 5) == ia+2)
&& (std::find(std::begin(ib), std::end(ib), 9) == ib+6)
;
}
#endif
int main(int, char**)
{
int ia[] = {0, 1, 2, 3, 4, 5};
const unsigned s = sizeof(ia)/sizeof(ia[0]);
cpp17_input_iterator<const int*> r = std::find(cpp17_input_iterator<const int*>(ia),
cpp17_input_iterator<const int*>(ia+s), 3);
assert(*r == 3);
r = std::find(cpp17_input_iterator<const int*>(ia), cpp17_input_iterator<const int*>(ia+s), 10);
assert(r == cpp17_input_iterator<const int*>(ia+s));
#if TEST_STD_VER > 17
static_assert(test_constexpr());
#endif
return 0;
}
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