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/*! \file
    \brief Statically sized array of elements that accommodates all CUTLASS-supported numeric types
           and is safe to use in a union.
*/

#include "../common/cutlass_unit_test.h"

#include "cutlass/array.h"
#include "cutlass/numeric_conversion.h"
#include "cutlass/util/device_memory.h"

/////////////////////////////////////////////////////////////////////////////////////////////////
//
// Host
//
/////////////////////////////////////////////////////////////////////////////////////////////////

TEST(half_t, host_conversion) {
  for (int i = -1024; i < 1024; ++i) {
    float f = static_cast<float>(i);

    cutlass::half_t x = static_cast<cutlass::half_t>(i);
    cutlass::half_t y = static_cast<cutlass::half_t>(f);

    EXPECT_TRUE(static_cast<int>(x) == i);
    EXPECT_TRUE(static_cast<float>(y) == f);
  }

  // Try out default-ctor (zero initialization of primitive proxy type)
  EXPECT_TRUE(cutlass::half_t() == 0.0_hf);

  // Try out user-defined literals
  EXPECT_TRUE(cutlass::half_t(7) == 7_hf);
  EXPECT_TRUE(7 == static_cast<int>(7_hf));
}

TEST(half_t, host_arithmetic) {

  for (int i = -100; i < 100; ++i) {
    for (int j = -100; j < 100; ++j) {

      cutlass::half_t x = static_cast<cutlass::half_t>(i);
      cutlass::half_t y = static_cast<cutlass::half_t>(j);

      EXPECT_TRUE(static_cast<int>(x + y) == (i + j));
    }
  }

  for (int i = -6; i < 6; ++i) {
    for (int j = -6; j < 6; ++j) {

      cutlass::half_t x = static_cast<cutlass::half_t>(i);
      cutlass::half_t y = static_cast<cutlass::half_t>(j);

      EXPECT_TRUE(static_cast<int>(x * y) == (i * j));
    }
  }
}

/////////////////////////////////////////////////////////////////////////////////////////////////