1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <algorithm>
10
11 // template<InputIterator Iter, class T>
12 // requires HasEqualTo<Iter::value_type, T>
13 // constexpr Iter // constexpr after C++17
14 // find(Iter first, Iter last, const T& value);
15
16 #include <algorithm>
17 #include <cassert>
18
19 #include "test_macros.h"
20 #include "test_iterators.h"
21
22 #if TEST_STD_VER > 17
test_constexpr()23 TEST_CONSTEXPR bool test_constexpr() {
24 int ia[] = {1, 3, 5, 2, 4, 6};
25 int ib[] = {1, 2, 3, 4, 5, 6};
26 return (std::find(std::begin(ia), std::end(ia), 5) == ia+2)
27 && (std::find(std::begin(ib), std::end(ib), 9) == ib+6)
28 ;
29 }
30 #endif
31
main(int,char **)32 int main(int, char**)
33 {
34 int ia[] = {0, 1, 2, 3, 4, 5};
35 const unsigned s = sizeof(ia)/sizeof(ia[0]);
36 input_iterator<const int*> r = std::find(input_iterator<const int*>(ia),
37 input_iterator<const int*>(ia+s), 3);
38 assert(*r == 3);
39 r = std::find(input_iterator<const int*>(ia), input_iterator<const int*>(ia+s), 10);
40 assert(r == input_iterator<const int*>(ia+s));
41
42 #if TEST_STD_VER > 17
43 static_assert(test_constexpr());
44 #endif
45
46 return 0;
47 }
48