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.
73 lines
2.2 KiB
C++
73 lines
2.2 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 <class InputIterator, class OutputIterator1,
|
|
// class OutputIterator2, class Predicate>
|
|
// constexpr pair<OutputIterator1, OutputIterator2> // constexpr after C++17
|
|
// partition_copy(InputIterator first, InputIterator last,
|
|
// OutputIterator1 out_true, OutputIterator2 out_false,
|
|
// Predicate pred);
|
|
|
|
#include <algorithm>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
#include "test_iterators.h"
|
|
|
|
struct is_odd
|
|
{
|
|
TEST_CONSTEXPR bool operator()(const int& i) const {return i & 1;}
|
|
};
|
|
|
|
#if TEST_STD_VER > 17
|
|
TEST_CONSTEXPR bool test_constexpr() {
|
|
int ia[] = {1, 3, 5, 2, 4, 6};
|
|
int r1[10] = {0};
|
|
int r2[10] = {0};
|
|
|
|
auto p = std::partition_copy(std::begin(ia), std::end(ia),
|
|
std::begin(r1), std::begin(r2), is_odd());
|
|
|
|
return std::all_of(std::begin(r1), p.first, is_odd())
|
|
&& std::all_of(p.first, std::end(r1), [](int a){return a == 0;})
|
|
&& std::none_of(std::begin(r2), p.second, is_odd())
|
|
&& std::all_of(p.second, std::end(r2), [](int a){return a == 0;})
|
|
;
|
|
}
|
|
#endif
|
|
|
|
int main()
|
|
{
|
|
{
|
|
const int ia[] = {1, 2, 3, 4, 6, 8, 5, 7};
|
|
int r1[10] = {0};
|
|
int r2[10] = {0};
|
|
typedef std::pair<output_iterator<int*>, int*> P;
|
|
P p = std::partition_copy(input_iterator<const int*>(std::begin(ia)),
|
|
input_iterator<const int*>(std::end(ia)),
|
|
output_iterator<int*>(r1), r2, is_odd());
|
|
assert(p.first.base() == r1 + 4);
|
|
assert(r1[0] == 1);
|
|
assert(r1[1] == 3);
|
|
assert(r1[2] == 5);
|
|
assert(r1[3] == 7);
|
|
assert(p.second == r2 + 4);
|
|
assert(r2[0] == 2);
|
|
assert(r2[1] == 4);
|
|
assert(r2[2] == 6);
|
|
assert(r2[3] == 8);
|
|
}
|
|
|
|
#if TEST_STD_VER > 17
|
|
static_assert(test_constexpr());
|
|
#endif
|
|
}
|