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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-has-no-incomplete-pstl
// <algorithm>
// template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2>
// bool equal(ExecutionPolicy&& exec,
// ForwardIterator1 first1, ForwardIterator1 last1,
// ForwardIterator2 first2);
//
// template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2,
// class BinaryPredicate>
// bool equal(ExecutionPolicy&& exec,
// ForwardIterator1 first1, ForwardIterator1 last1,
// ForwardIterator2 first2, BinaryPredicate pred);
//
// template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2>
// bool equal(ExecutionPolicy&& exec,
// ForwardIterator1 first1, ForwardIterator1 last1,
// ForwardIterator2 first2, ForwardIterator2 last2);
//
// template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2,
// class BinaryPredicate>
// bool equal(ExecutionPolicy&& exec,
// ForwardIterator1 first1, ForwardIterator1 last1,
// ForwardIterator2 first2, ForwardIterator2 last2,
// BinaryPredicate pred);
#include <algorithm>
#include <cassert>
#include <iterator>
#include "test_execution_policies.h"
#include "test_iterators.h"
#include "test_macros.h"
template <class It1, class It2>
struct Test {
template <class Policy>
void operator()(Policy&& policy) {
{ // 3 iter overloads
// check with equal ranges
{
int a[] = {1, 2, 3, 4};
int b[] = {1, 2, 3, 4};
assert(std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b))));
}
// check with an empty range
{
int a[] = {999};
int b[] = {1, 2, 3};
assert(std::equal(policy, It1(std::begin(a)), It1(std::begin(a)), It2(std::begin(b))));
}
// check with different ranges
{
int a[] = {1, 2, 3};
int b[] = {3, 2, 1};
assert(!std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b))));
}
// check that the predicate is used
{
int a[] = {2, 4, 6, 8, 10};
int b[] = {12, 14, 16, 18, 20};
assert(std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), [](int lhs, int rhs) {
return lhs % 2 == rhs % 2;
}));
}
}
{ // 4 iter overloads
// check with equal ranges of equal size
{
int a[] = {1, 2, 3, 4};
int b[] = {1, 2, 3, 4};
assert(std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), It2(std::end(b))));
}
// check with unequal ranges of equal size
{
int a[] = {1, 2, 3, 4};
int b[] = {4, 3, 2, 1};
assert(!std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), It2(std::end(b))));
}
// check with equal ranges of unequal size
{
{
int a[] = {1, 2, 3, 4};
int b[] = {1, 2, 3, 4, 5};
assert(!std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), It2(std::end(b))));
}
{
int a[] = {1, 2, 3, 4, 5};
int b[] = {1, 2, 3, 4};
assert(!std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), It2(std::end(b))));
}
}
// check empty ranges
{
// empty/empty
{
int a[] = {888};
int b[] = {999};
assert(std::equal(policy, It1(std::begin(a)), It1(std::begin(a)), It2(std::begin(b)), It2(std::begin(b))));
}
// empty/non-empty
{
int a[] = {999};
int b[] = {999};
assert(!std::equal(policy, It1(std::begin(a)), It1(std::begin(a)), It2(std::begin(b)), It2(std::end(b))));
}
// non-empty/empty
{
int a[] = {999};
int b[] = {999};
assert(!std::equal(policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), It2(std::begin(b))));
}
}
// check that the predicate is used
{
int a[] = {2, 4, 6, 8, 10};
int b[] = {12, 14, 16, 18, 20};
assert(std::equal(
policy, It1(std::begin(a)), It1(std::end(a)), It2(std::begin(b)), It2(std::end(b)), [](int lhs, int rhs) {
return lhs % 2 == rhs % 2;
}));
}
}
}
};
int main(int, char**) {
types::for_each(types::forward_iterator_list<int*>{}, types::apply_type_identity{[](auto v) {
using It1 = typename decltype(v)::type;
types::for_each(
types::forward_iterator_list<int*>{},
TestIteratorWithPolicies<types::partial_instantiation<Test, It1>::template apply>{});
}});
return 0;
}
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