pstl/test/std/algorithms/alg.nonmodifying/find_first_of.pass.cpp

   1 // -*- C++ -*-
   2 //===-- find_first_of.pass.cpp --------------------------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // UNSUPPORTED: c++03, c++11, c++14
  11
  12 #include "support/pstl_test_config.h"
  13
  14 #include <execution>
  15 #include <algorithm>
  16
  17 #include "support/utils.h"
  18
  19 using namespace TestUtils;
  20
  21 struct test_one_policy
  22 {
  23 #if defined(_PSTL_ICC_17_VC141_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN) ||                                                             \
  24     defined(_PSTL_ICC_16_VC14_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN) //dummy specialization by policy type, in case of broken configuration
  25     template <typename Iterator1, typename Iterator2, typename Predicate>
  26     void
  27     operator()(pstl::execution::unsequenced_policy, Iterator1 b, Iterator1 e, Iterator2 bsub, Iterator2 esub,
  28                Predicate pred)
  29     {
  30     }
  31     template <typename Iterator1, typename Iterator2, typename Predicate>
  32     void
  33     operator()(pstl::execution::parallel_unsequenced_policy, Iterator1 b, Iterator1 e, Iterator2 bsub, Iterator2 esub,
  34                Predicate pred)
  35     {
  36     }
  37 #endif
  38
  39     template <typename ExecutionPolicy, typename Iterator1, typename Iterator2, typename Predicate>
  40     void
  41     operator()(ExecutionPolicy&& exec, Iterator1 b, Iterator1 e, Iterator2 bsub, Iterator2 esub, Predicate pred)
  42     {
  43         using namespace std;
  44         Iterator1 expected = find_first_of(b, e, bsub, esub, pred);
  45         Iterator1 actual = find_first_of(exec, b, e, bsub, esub, pred);
  46         EXPECT_TRUE(actual == expected, "wrong return result from find_first_of with a predicate");
  47
  48         expected = find_first_of(b, e, bsub, esub);
  49         actual = find_first_of(exec, b, e, bsub, esub);
  50         EXPECT_TRUE(actual == expected, "wrong return result from find_first_of");
  51     }
  52 };
  53
  54 template <typename T, typename Predicate>
  55 void
  56 test(Predicate pred)
  57 {
  58
  59     const std::size_t max_n1 = 1000;
  60     const std::size_t max_n2 = (max_n1 * 10) / 8;
  61     Sequence<T> in1(max_n1, [](std::size_t) { return T(1); });
  62     Sequence<T> in2(max_n2, [](std::size_t) { return T(0); });
  63     for (std::size_t n1 = 0; n1 <= max_n1; n1 = n1 <= 16 ? n1 + 1 : size_t(3.1415 * n1))
  64     {
  65         std::size_t sub_n[] = {0, 1, n1 / 3, n1, (n1 * 10) / 8};
  66         for (const auto n2 : sub_n)
  67         {
  68             invoke_on_all_policies(test_one_policy(), in1.begin(), in1.begin() + n1, in2.data(), in2.data() + n2, pred);
  69
  70             in2[n2 / 2] = T(1);
  71             invoke_on_all_policies(test_one_policy(), in1.cbegin(), in1.cbegin() + n1, in2.data(), in2.data() + n2,
  72                                    pred);
  73
  74             if (n2 >= 3)
  75             {
  76                 in2[2 * n2 / 3] = T(1);
  77                 invoke_on_all_policies(test_one_policy(), in1.cbegin(), in1.cbegin() + n1, in2.begin(),
  78                                        in2.begin() + n2, pred);
  79                 in2[2 * n2 / 3] = T(0);
  80             }
  81             in2[n2 / 2] = T(0);
  82         }
  83     }
  84     invoke_on_all_policies(test_one_policy(), in1.begin(), in1.begin() + max_n1 / 10, in1.data(),
  85                            in1.data() + max_n1 / 10, pred);
  86 }
  87
  88 template <typename T>
  89 struct test_non_const
  90 {
  91     template <typename Policy, typename FirstIterator, typename SecondInterator>
  92     void
  93     operator()(Policy&& exec, FirstIterator first_iter, SecondInterator second_iter)
  94     {
  95         invoke_if(exec, [&]() {
  96             find_first_of(exec, first_iter, first_iter, second_iter, second_iter, non_const(std::equal_to<T>()));
  97         });
  98     }
  99 };
 100
 101 int
 102 main()
 103 {
 104     test<int32_t>(std::equal_to<int32_t>());
 105     test<uint16_t>(std::not_equal_to<uint16_t>());
 106     test<float64_t>([](const float64_t x, const float64_t y) { return x * x == y * y; });
 107
 108     test_algo_basic_double<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>());
 109
 110     std::cout << done() << std::endl;
 111     return 0;
 112 }