Update Kokkos library in LAMMPS to v4.2

lib/kokkos/core/unit_test/TestCheckedIntegerOps.hpp

@@ -0,0 +1,51 @@
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 4.0
+//       Copyright (2022) National Technology & Engineering
+//               Solutions of Sandia, LLC (NTESS).
+//
+// Under the terms of Contract DE-NA0003525 with NTESS,
+// the U.S. Government retains certain rights in this software.
+//
+// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
+// See https://kokkos.org/LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//@HEADER
+
+#include <gtest/gtest.h>
+#include <impl/Kokkos_CheckedIntegerOps.hpp>
+#include <limits>
+
+namespace {
+
+TEST(TEST_CATEGORY, checked_integer_operations_multiply_overflow) {
+  {
+    auto result      = 1u;
+    auto is_overflow = Kokkos::Impl::multiply_overflow(1u, 2u, result);
+    EXPECT_EQ(result, 2u);
+    EXPECT_FALSE(is_overflow);
+  }
+  {
+    auto result      = 1u;
+    auto is_overflow = Kokkos::Impl::multiply_overflow(
+        std::numeric_limits<unsigned>::max(), 2u, result);
+    EXPECT_TRUE(is_overflow);
+  }
+}
+
+TEST(TEST_CATEGORY_DEATH, checked_integer_operations_multiply_overflow_abort) {
+  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
+  {
+    auto result = Kokkos::Impl::multiply_overflow_abort(1u, 2u);
+    EXPECT_EQ(result, 2u);
+  }
+  {
+    ASSERT_DEATH(Kokkos::Impl::multiply_overflow_abort(
+                     std::numeric_limits<unsigned>::max(), 2u),
+                 "Arithmetic overflow detected.");
+  }
+}
+
+}  // namespace