}
}

TEST(BitcastOpTest, TestUpcast) {
  Tensor int8_input(DT_UINT8, {8});
  for (int i = 0; i < 8; i++) {
    int8_input.vec<uint8>()(i) = static_cast<uint8>(1);
  }
  TestBitcastOp(&int8_input, DT_UINT64, TensorShape(), error::OK);
}

TEST(BitcastOpTest, TestDowncast) {
  Tensor int64_input(static_cast<uint64>(1));
  TestBitcastOp(&int64_input, DT_UINT8, TensorShape({8}), error::OK);
}

  return folded_results.front();
}

// Calculates zero-point offset by reducing the weight and multiply it with zp.
// Originally, we have:
//   output = (int8_input - input_zp) * (int8_weight - weight_zp)
// So, offset = input_zp * int8_weight + weight_zp * int8_input
// - input_zp * weight_zp.
// This function calculates the `offset` value mentioned above. Note that the