//===----------------------------------------------------------------------===//
//
// 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<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
// constexpr bool // constexpr after C++17
// is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
// ForwardIterator2 first2, BinaryPredicate pred);
#include <algorithm>
#include <functional>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
int comparison_count = 0;
template <typename T>
bool counting_equals ( const T &a, const T &b ) {
++comparison_count;
return a == b;
}
#if TEST_STD_VER > 17
constexpr bool test_constexpr() {
int ia[] = {0, 0, 0};
int ib[] = {1, 1, 0};
int ic[] = {1, 0, 1};
int id[] = {1};
std::equal_to<int> c{};
return !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib) , c)
&& !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib), c)
&& std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic) , c)
&& std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic), c)
&& !std::is_permutation(std::begin(ic), std::end(ic), std::begin(id), std::end(id), c)
;
}
#endif
struct S {
S(int i) : i_(i) {}
bool operator==(const S& other) = delete;
int i_;
};
struct eq {
bool operator()(const S& a, const S& b) const { return a.i_ == b.i_; }
};
int main(int, char**)
{
{
const int ia[] = {0};
const int ib[] = {0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + 0),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0};
const int ib[] = {1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0};
const int ib[] = {0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0};
const int ib[] = {0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0};
const int ib[] = {1, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0};
const int ib[] = {1, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1};
const int ib[] = {0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1};
const int ib[] = {0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1};
const int ib[] = {1, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1};
const int ib[] = {1, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 0};
const int ib[] = {0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 0};
const int ib[] = {0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 0};
const int ib[] = {1, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 0};
const int ib[] = {1, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 1};
const int ib[] = {0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 1};
const int ib[] = {0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 1};
const int ib[] = {1, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {1, 1};
const int ib[] = {1, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 0, 2};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 1, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 1, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 1, 2};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 2, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 2, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 0};
const int ib[] = {1, 2, 2};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 1};
const int ib[] = {1, 0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 1};
const int ib[] = {1, 0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1, 2};
const int ib[] = {1, 0, 2};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1, 2};
const int ib[] = {1, 2, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1, 2};
const int ib[] = {2, 1, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1, 2};
const int ib[] = {2, 0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 1};
const int ib[] = {1, 0, 1};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 0, 1};
const int ib[] = {1, 0, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib + 1),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
#endif
}
{
const int ia[] = {0, 1, 2, 3, 0, 5, 6, 2, 4, 4};
const int ib[] = {4, 2, 3, 0, 1, 4, 0, 5, 6, 2};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == true);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == true);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib + 1),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
std::equal_to<const int>()) == false);
comparison_count = 0;
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa - 1),
counting_equals<const int>) == false);
assert ( comparison_count > 0 );
comparison_count = 0;
assert(std::is_permutation(random_access_iterator<const int*>(ia),
random_access_iterator<const int*>(ia + sa),
random_access_iterator<const int*>(ib),
random_access_iterator<const int*>(ib + sa - 1),
counting_equals<const int>) == false);
assert ( comparison_count == 0 );
#endif
}
{
const int ia[] = {0, 1, 2, 3, 0, 5, 6, 2, 4, 4};
const int ib[] = {4, 2, 3, 0, 1, 4, 0, 5, 6, 0};
const unsigned sa = sizeof(ia)/sizeof(ia[0]);
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
std::equal_to<const int>()) == false);
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const int*>(ia),
forward_iterator<const int*>(ia + sa),
forward_iterator<const int*>(ib),
forward_iterator<const int*>(ib + sa),
std::equal_to<const int>()) == false);
#endif
}
{
const S a[] = {S(0), S(1)};
const S b[] = {S(1), S(0)};
const unsigned sa = sizeof(a)/sizeof(a[0]);
assert(std::is_permutation(forward_iterator<const S*>(a),
forward_iterator<const S*>(a + sa),
forward_iterator<const S*>(b),
eq()));
#if TEST_STD_VER >= 14
assert(std::is_permutation(forward_iterator<const S*>(a),
forward_iterator<const S*>(a + sa),
forward_iterator<const S*>(b),
forward_iterator<const S*>(b + sa),
eq()));
#endif
}
#if TEST_STD_VER > 17
static_assert(test_constexpr());
#endif
return 0;
}
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