80 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410 11// UNSUPPORTED: libcpp-has-no-incomplete-pstl12 13// <algorithm>14 15// template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2,16// class ForwardIterator, class BinaryOperation>17// ForwardIterator18// transform(ExecutionPolicy&& exec,19// ForwardIterator1 first1, ForwardIterator1 last1,20// ForwardIterator2 first2, ForwardIterator result,21// BinaryOperation binary_op);22 23#include <algorithm>24#include <vector>25 26#include "test_macros.h"27#include "test_execution_policies.h"28#include "test_iterators.h"29 30EXECUTION_POLICY_SFINAE_TEST(transform);31 32static_assert(sfinae_test_transform<int, int*, int*, int*, int*, bool (*)(int)>);33static_assert(!sfinae_test_transform<std::execution::parallel_policy, int*, int*, int*, int*, int (*)(int, int)>);34 35template <class Iter1, class Iter2, class Iter3>36struct Test {37 template <class Policy>38 void operator()(Policy&& policy) {39 // simple test40 for (const int size : {0, 1, 2, 100, 350}) {41 std::vector<int> a(size);42 std::vector<int> b(size);43 for (int i = 0; i != size; ++i) {44 a[i] = i + 1;45 b[i] = i - 3;46 }47 48 std::vector<int> out(std::size(a));49 decltype(auto) ret = std::transform(50 policy,51 Iter1(std::data(a)),52 Iter1(std::data(a) + std::size(a)),53 Iter2(std::data(b)),54 Iter3(std::data(out)),55 [](int i, int j) { return i + j + 3; });56 static_assert(std::is_same_v<decltype(ret), Iter3>);57 assert(base(ret) == std::data(out) + std::size(out));58 for (int i = 0; i != size; ++i) {59 assert(out[i] == i * 2 + 1);60 }61 }62 }63};64 65int main(int, char**) {66 types::for_each(67 types::forward_iterator_list<int*>{}, types::apply_type_identity{[](auto v) {68 using Iter3 = typename decltype(v)::type;69 types::for_each(70 types::forward_iterator_list<int*>{}, types::apply_type_identity{[](auto v2) {71 using Iter2 = typename decltype(v2)::type;72 types::for_each(73 types::forward_iterator_list<int*>{},74 TestIteratorWithPolicies<types::partial_instantiation<Test, Iter2, Iter3>::template apply>{});75 }});76 }});77 78 return 0;79}80