bitfield.cpp

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#include "cutlass_unit_test.h"

#include <iostream>
#include <iomanip>
#include <utility>
#include <type_traits>
#include <vector>
#include <numeric>

#include <cute/container/bit_field.hpp>

#include <cute/algorithm/tuple_algorithms.hpp>

using namespace cute;

TEST(CuTe_core, Bitfield)
{
  for_each(make_int_range<1,65>{}, [&](auto NumBits) {
    constexpr auto num_bits = cute::remove_cvref_t<decltype(NumBits)>::value;
    for_each(make_int_range<0, 129>{}, [&](auto BitStart) {
      constexpr auto bit_start = cute::remove_cvref_t<decltype(BitStart)>::value;
      using BF = bit_field<bit_start, cute::remove_cvref_t<decltype(NumBits)>::value>;

#if 0
      printf("bit_field<%d,%d>:\n", bit_start, num_bits);
      printf("  value_type_bits  : %d\n", BF::value_type_bits);
      printf("  storage_type_bits: %d\n", BF::storage_type_bits);
      printf("  N                : %d\n", BF::N);
      printf("  idx              : %d\n", BF::idx);
      printf("  bit_lo           : %d\n", BF::bit_lo);
      printf("  bit_hi           : %d\n", BF::bit_hi);
      printf("  mask             : 0x%lx\n", uint64_t(BF::mask));
      printf("  mask_lo          : 0x%lx\n", uint64_t(BF::mask_lo));
      printf("  mask_hi          : 0x%lx\n", uint64_t(BF::mask_hi));
#endif

      // Test
      uint64_t v = num_bits == 64 ? uint64_t(-1) : ((uint64_t(1) << NumBits) - 1);

      BF bf{};
      bf = v;
      EXPECT_EQ(v, uint64_t(bf));
    });
  });

  for_each(make_int_range<0,129>{}, [&](auto BitStart) {

    using BF = bit_field<cute::remove_cvref_t<decltype(BitStart)>::value, 32, float>;

    BF bf{};
    bf = 3.14f;
    EXPECT_EQ(3.14f, float(bf));
  });

}