20a6b63f1b
This patch includes __fwd/span.h in <mdspan> so that we get the declaration of dynamic_extent inside <mdspan>. We also clean up quite a few tests that were manually included <span> for dynamic_extent. This is based on feedback from #142693. Reviewers: philnik777, ldionne Reviewed By: philnik777 Pull Request: https://github.com/llvm/llvm-project/pull/142925
95 lines
3.7 KiB
C++
95 lines
3.7 KiB
C++
//===----------------------------------------------------------------------===//
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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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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// <mdspan>
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//
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// template<class OtherIndexType, size_t... OtherExtents>
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// friend constexpr bool operator==(const extents& lhs,
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// const extents<OtherIndexType, OtherExtents...>& rhs) noexcept;
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//
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// Returns: true if lhs.rank() equals rhs.rank() and
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// if lhs.extent(r) equals rhs.extent(r) for every rank index r of rhs, otherwise false.
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//
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#include <cassert>
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#include <cstddef>
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#include <mdspan>
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#include "test_macros.h"
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template <class To, class From>
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constexpr void test_comparison(bool equal, To dest, From src) {
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ASSERT_NOEXCEPT(dest == src);
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assert((dest == src) == equal);
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assert((dest != src) == !equal);
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}
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template <class T1, class T2>
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constexpr void test_comparison_different_rank() {
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constexpr size_t D = std::dynamic_extent;
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test_comparison(false, std::extents<T1>(), std::extents<T2, D>(1));
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test_comparison(false, std::extents<T1>(), std::extents<T2, 1>());
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test_comparison(false, std::extents<T1, D>(1), std::extents<T2>());
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test_comparison(false, std::extents<T1, 1>(), std::extents<T2>());
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test_comparison(false, std::extents<T1, D>(5), std::extents<T2, D, D>(5, 5));
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test_comparison(false, std::extents<T1, 5>(), std::extents<T2, 5, D>(5));
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test_comparison(false, std::extents<T1, 5>(), std::extents<T2, 5, 1>());
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test_comparison(false, std::extents<T1, D, D>(5, 5), std::extents<T2, D>(5));
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test_comparison(false, std::extents<T1, 5, D>(5), std::extents<T2, D>(5));
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test_comparison(false, std::extents<T1, 5, 5>(), std::extents<T2, 5>());
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}
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template <class T1, class T2>
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constexpr void test_comparison_same_rank() {
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constexpr size_t D = std::dynamic_extent;
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test_comparison(true, std::extents<T1>(), std::extents<T2>());
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test_comparison(true, std::extents<T1, D>(5), std::extents<T2, D>(5));
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test_comparison(true, std::extents<T1, 5>(), std::extents<T2, D>(5));
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test_comparison(true, std::extents<T1, D>(5), std::extents<T2, 5>());
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test_comparison(true, std::extents<T1, 5>(), std::extents< T2, 5>());
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test_comparison(false, std::extents<T1, D>(5), std::extents<T2, D>(7));
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test_comparison(false, std::extents<T1, 5>(), std::extents<T2, D>(7));
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test_comparison(false, std::extents<T1, D>(5), std::extents<T2, 7>());
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test_comparison(false, std::extents<T1, 5>(), std::extents<T2, 7>());
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test_comparison(true, std::extents<T1, D, D, D, D, D>(5, 6, 7, 8, 9), std::extents<T2, D, D, D, D, D>(5, 6, 7, 8, 9));
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test_comparison(true, std::extents<T1, D, 6, D, 8, D>(5, 7, 9), std::extents<T2, 5, D, D, 8, 9>(6, 7));
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test_comparison(true, std::extents<T1, 5, 6, 7, 8, 9>(5, 6, 7, 8, 9), std::extents<T2, 5, 6, 7, 8, 9>());
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test_comparison(
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false, std::extents<T1, D, D, D, D, D>(5, 6, 7, 8, 9), std::extents<T2, D, D, D, D, D>(5, 6, 3, 8, 9));
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test_comparison(false, std::extents<T1, D, 6, D, 8, D>(5, 7, 9), std::extents<T2, 5, D, D, 3, 9>(6, 7));
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test_comparison(false, std::extents<T1, 5, 6, 7, 8, 9>(5, 6, 7, 8, 9), std::extents<T2, 5, 6, 7, 3, 9>());
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}
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template <class T1, class T2>
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constexpr void test_comparison() {
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test_comparison_same_rank<T1, T2>();
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test_comparison_different_rank<T1, T2>();
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}
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constexpr bool test() {
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test_comparison<int, int>();
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test_comparison<int, size_t>();
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test_comparison<size_t, int>();
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test_comparison<size_t, long>();
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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