| // -*- C++ -*- |
| //===-- generate.pass.cpp -------------------------------------------------===// |
| // |
| // 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 |
| |
| #include "support/pstl_test_config.h" |
| |
| #include <atomic> |
| #include <execution> |
| #include <algorithm> |
| |
| #include "support/utils.h" |
| |
| using namespace TestUtils; |
| |
| template <typename T> |
| struct Generator_count |
| { |
| const T def_val = T(-1); |
| T |
| operator()() |
| { |
| return def_val; |
| } |
| T |
| default_value() const |
| { |
| return def_val; |
| } |
| }; |
| |
| struct test_generate |
| { |
| template <typename Policy, typename Iterator, typename Size> |
| void |
| operator()(Policy&& exec, Iterator first, Iterator last, Size n) |
| { |
| using namespace std; |
| typedef typename std::iterator_traits<Iterator>::value_type T; |
| |
| // Try random-access iterator |
| { |
| Generator_count<T> g; |
| generate(exec, first, last, g); |
| Size count = std::count(first, last, g.default_value()); |
| EXPECT_TRUE(count == n, "generate wrong result for generate"); |
| std::fill(first, last, T(0)); |
| } |
| |
| { |
| Generator_count<T> g; |
| const auto m = n / 2; |
| auto actual_last = generate_n(exec, first, m, g); |
| Size count = std::count(first, actual_last, g.default_value()); |
| EXPECT_TRUE(count == m && actual_last == std::next(first, m), "generate_n wrong result for generate_n"); |
| std::fill(first, actual_last, T(0)); |
| } |
| } |
| }; |
| |
| template <typename T> |
| void |
| test_generate_by_type() |
| { |
| for (size_t n = 0; n <= 100000; n = n < 16 ? n + 1 : size_t(3.1415 * n)) |
| { |
| Sequence<T> in(n, [](size_t) -> T { return T(0); }); //fill by zero |
| |
| invoke_on_all_policies(test_generate(), in.begin(), in.end(), in.size()); |
| } |
| } |
| |
| template <typename T> |
| struct test_non_const |
| { |
| template <typename Policy, typename Iterator> |
| void |
| operator()(Policy&& exec, Iterator iter) |
| { |
| auto gen = []() { return T(0); }; |
| |
| generate(exec, iter, iter, non_const(gen)); |
| generate_n(exec, iter, 0, non_const(gen)); |
| } |
| }; |
| |
| int |
| main() |
| { |
| |
| test_generate_by_type<int32_t>(); |
| test_generate_by_type<float64_t>(); |
| |
| test_algo_basic_single<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>()); |
| |
| std::cout << done() << std::endl; |
| return 0; |
| } |