forked from OSchip/llvm-project
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <algorithm>
|
|
|
|
// template<ForwardIterator Iter>
|
|
// requires EqualityComparable<Iter::value_type>
|
|
// constexpr Iter // constexpr after C++17
|
|
// adjacent_find(Iter first, Iter last);
|
|
|
|
#include <algorithm>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
#include "test_iterators.h"
|
|
|
|
#if TEST_STD_VER > 17
|
|
TEST_CONSTEXPR bool test_constexpr() {
|
|
int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
|
|
int ib[] = {0, 1, 2, 7, 0, 1, 2, 3};
|
|
|
|
return (std::adjacent_find(std::begin(ia), std::end(ia)) == ia+2)
|
|
&& (std::adjacent_find(std::begin(ib), std::end(ib)) == std::end(ib))
|
|
;
|
|
}
|
|
#endif
|
|
|
|
int main()
|
|
{
|
|
int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
|
|
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
|
|
assert(std::adjacent_find(forward_iterator<const int*>(ia),
|
|
forward_iterator<const int*>(ia + sa)) ==
|
|
forward_iterator<const int*>(ia+2));
|
|
assert(std::adjacent_find(forward_iterator<const int*>(ia),
|
|
forward_iterator<const int*>(ia)) ==
|
|
forward_iterator<const int*>(ia));
|
|
assert(std::adjacent_find(forward_iterator<const int*>(ia+3),
|
|
forward_iterator<const int*>(ia + sa)) ==
|
|
forward_iterator<const int*>(ia+sa));
|
|
|
|
#if TEST_STD_VER > 17
|
|
static_assert(test_constexpr());
|
|
#endif
|
|
}
|