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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project
#ifndef KOKKOS_UNITTEST_MDSPAN_HPP
#define KOKKOS_UNITTEST_MDSPAN_HPP
#include <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_EXPERIMENTAL_CXX20_MODULES
import kokkos.core;
#else
#include <Kokkos_Core.hpp>
#endif
#include <gtest/gtest.h>
#ifdef KOKKOS_ENABLE_IMPL_MDSPAN
namespace {
void test_mdspan_minimal_functional() {
int N = 100;
Kokkos::View<int*, TEST_EXECSPACE> a("A", N);
Kokkos::parallel_for(
"FillSequence", Kokkos::RangePolicy<TEST_EXECSPACE>(0, N),
KOKKOS_LAMBDA(int i) { a(i) = i; });
Kokkos::mdspan<int, Kokkos::dextents<int, 1>> a_mds(a.data(), N);
int errors;
Kokkos::parallel_reduce(
"CheckMinimalMDSpan", Kokkos::RangePolicy<TEST_EXECSPACE>(0, N),
KOKKOS_LAMBDA(int i, int& err) {
#if !defined(KOKKOS_ENABLE_OPENACC)
Kokkos::mdspan<int, Kokkos::dextents<int, 1>> b_mds(a.data(), N);
#endif
#if !defined(KOKKOS_ENABLE_CXX20)
if (a_mds[i] != i) err++;
#if !defined(KOKKOS_ENABLE_OPENACC)
if (b_mds[i] != i) err++;
#endif
#else
if (a_mds(i) != i) err++;
#if !defined(KOKKOS_ENABLE_OPENACC)
if (b_mds(i) != i) err++;
#endif
#endif
},
errors);
ASSERT_EQ(errors, 0);
}
} // namespace
#endif
namespace {
TEST(TEST_CATEGORY, mdspan_minimal_functional) {
#ifndef KOKKOS_ENABLE_IMPL_MDSPAN
GTEST_SKIP() << "mdspan not enabled";
#else
test_mdspan_minimal_functional();
#endif
}
} // namespace
#endif
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