forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.5 KiB
C++
56 lines
1.5 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<InputIterator Iter, Callable<auto, Iter::reference> Function>
|
|
// requires CopyConstructible<Function>
|
|
// constexpr Function // constexpr after C++17
|
|
// for_each(Iter first, Iter last, Function f);
|
|
|
|
#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, 6, 7};
|
|
int expected[] = {3, 5, 8, 9};
|
|
|
|
std::for_each(std::begin(ia), std::end(ia), [](int &a) { a += 2; });
|
|
return std::equal(std::begin(ia), std::end(ia), std::begin(expected))
|
|
;
|
|
}
|
|
#endif
|
|
|
|
struct for_each_test
|
|
{
|
|
for_each_test(int c) : count(c) {}
|
|
int count;
|
|
void operator()(int& i) {++i; ++count;}
|
|
};
|
|
|
|
int main()
|
|
{
|
|
int ia[] = {0, 1, 2, 3, 4, 5};
|
|
const unsigned s = sizeof(ia)/sizeof(ia[0]);
|
|
for_each_test f = std::for_each(input_iterator<int*>(ia),
|
|
input_iterator<int*>(ia+s),
|
|
for_each_test(0));
|
|
assert(f.count == s);
|
|
for (unsigned i = 0; i < s; ++i)
|
|
assert(ia[i] == static_cast<int>(i+1));
|
|
|
|
#if TEST_STD_VER > 17
|
|
static_assert(test_constexpr());
|
|
#endif
|
|
}
|