4d88b17b3f
Summary: PSTL should not provide those headers since they belong to the standard library. Instead, we define a dummy standard library in the tests that provides those headers. Reviewers: rodgert, MikeDvorskiy Subscribers: mgorny, jkorous, dexonsmith, libcxx-commits Tags: #libc Differential Revision: https://reviews.llvm.org/D60535 llvm-svn: 358497
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
// -*- C++ -*-
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//===-- reduce.pass.cpp ---------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "support/pstl_test_config.h"
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#include <execution>
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#include <numeric>
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#include "support/utils.h"
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using namespace TestUtils;
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struct test_long_forms_for_one_policy
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{
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template <typename Policy, typename Iterator, typename T, typename BinaryOp>
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void
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operator()(Policy&& exec, Iterator first, Iterator last, T init, BinaryOp binary, T expected)
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{
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T result_r = std::reduce(exec, first, last, init, binary);
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EXPECT_EQ(expected, result_r, "bad result from reduce(exec, first, last, init, binary_op)");
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}
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};
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template <typename T, typename BinaryOp, typename F>
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void
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test_long_form(T init, BinaryOp binary_op, F f)
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{
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// Try sequences of various lengths
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for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
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{
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T expected(init);
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Sequence<T> in(n, [n, f](size_t k) { return f((int32_t(k ^ n) % 1000 - 500)); });
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for (size_t k = 0; k < n; ++k)
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expected = binary_op(expected, in[k]);
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using namespace std;
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T result = transform_reduce_serial(in.cfbegin(), in.cfend(), init, binary_op, [](const T& t) { return t; });
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EXPECT_EQ(expected, result, "bad result from reduce(first, last, init, binary_op_op)");
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invoke_on_all_policies(test_long_forms_for_one_policy(), in.begin(), in.end(), init, binary_op, expected);
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invoke_on_all_policies(test_long_forms_for_one_policy(), in.cbegin(), in.cend(), init, binary_op, expected);
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}
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}
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struct test_two_short_forms
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{
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#if _PSTL_ICC_16_VC14_TEST_PAR_TBB_RT_RELEASE_64_BROKEN //dummy specialization by policy type, in case of broken configuration
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template <typename Iterator>
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void
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operator()(pstl::execution::parallel_policy, Iterator first, Iterator last, Sum init, Sum expected)
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{
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}
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template <typename Iterator>
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void
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operator()(pstl::execution::parallel_unsequenced_policy, Iterator first, Iterator last, Sum init, Sum expected)
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{
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}
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#endif
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template <typename Policy, typename Iterator>
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void
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operator()(Policy&& exec, Iterator first, Iterator last, Sum init, Sum expected)
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{
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using namespace std;
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Sum r0 = init + reduce(exec, first, last);
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EXPECT_EQ(expected, r0, "bad result from reduce(exec, first, last)");
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Sum r1 = reduce(exec, first, last, init);
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EXPECT_EQ(expected, r1, "bad result from reduce(exec, first, last, init)");
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}
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};
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// Test forms of reduce(...) that omit the binary_op or init operands.
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void
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test_short_forms()
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{
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for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
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{
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Sum init(42, OddTag());
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Sum expected(init);
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Sequence<Sum> in(n, [n](size_t k) { return Sum((int32_t(k ^ n) % 1000 - 500), OddTag()); });
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for (size_t k = 0; k < n; ++k)
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expected = expected + in[k];
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invoke_on_all_policies(test_two_short_forms(), in.begin(), in.end(), init, expected);
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invoke_on_all_policies(test_two_short_forms(), in.cbegin(), in.cend(), init, expected);
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}
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}
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int32_t
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main()
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{
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// Test for popular types
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test_long_form(42, std::plus<int32_t>(), [](int32_t x) { return x; });
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test_long_form(42.0, std::plus<float64_t>(), [](float64_t x) { return x; });
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// Test for strict types
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test_long_form<Number>(Number(42, OddTag()), Add(OddTag()), [](int32_t x) { return Number(x, OddTag()); });
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// Short forms are just facade for long forms, so just test with a single type.
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test_short_forms();
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std::cout << done() << std::endl;
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return 0;
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}
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