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#include <cub/detail/choose_offset.cuh>

#include <cuda/std/type_traits>

#include "catch2_test_helper.h"

CUB_TEST("Tests choose_offset", "[util][type]")
{
  // Uses unsigned 32-bit type for signed 32-bit type
  STATIC_REQUIRE(::cuda::std::is_same<cub::detail::choose_offset_t<std::int32_t>, std::uint32_t>::value);

  // Uses unsigned 32-bit type for type smaller than 32 bits
  STATIC_REQUIRE(::cuda::std::is_same<cub::detail::choose_offset_t<std::int8_t>, std::uint32_t>::value);

  // Uses unsigned 64-bit type for signed 64-bit type
  STATIC_REQUIRE(::cuda::std::is_same<cub::detail::choose_offset_t<std::int64_t>, unsigned long long>::value);
}

CUB_TEST("Tests promote_small_offset", "[util][type]")
{
  // Uses input type for types of at least 32 bits
  STATIC_REQUIRE(::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::int32_t>, std::int32_t>::value);

  // Uses input type for types of at least 32 bits
  STATIC_REQUIRE(
    ::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::uint32_t>, std::uint32_t>::value);

  // Uses input type for types of at least 32 bits
  STATIC_REQUIRE(
    ::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::uint64_t>, std::uint64_t>::value);

  // Uses input type for types of at least 32 bits
  STATIC_REQUIRE(::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::int64_t>, std::int64_t>::value);

  // Uses 32-bit type for type smaller than 32 bits
  STATIC_REQUIRE(::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::int8_t>, std::int32_t>::value);

  // Uses 32-bit type for type smaller than 32 bits
  STATIC_REQUIRE(::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::int16_t>, std::int32_t>::value);

  // Uses 32-bit type for type smaller than 32 bits
  STATIC_REQUIRE(
    ::cuda::std::is_same<typename cub::detail::promote_small_offset_t<std::uint16_t>, std::int32_t>::value);
}
