if err != nil {
		return nil, err
	}

	switch castType {
	case castInt, castInteger:
		i, err := intCast(v)
		return FromInt(i), err

	case castFloat:
		f, err := floatCast(v)
		return FromFloat(f), err

	case castString:
		s, err := stringCast(v)
		return FromString(s), err

	case castTimestamp:
		t, err := timestampCast(v)
		return FromTimestamp(t), err

  float value;
  TF_OperationGetAttrFloat(oper, "v", &value, s_);
  EXPECT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
  EXPECT_FLOAT_EQ(2.718, value);
}

TEST_F(CApiAttributesTest, FloatList) {
  const float list[] = {1.414, 2.718, 3.1415};
  const size_t list_size = TF_ARRAYSIZE(list);

  auto desc = init("list(float)");
  TF_SetAttrFloatList(desc, "v", list, list_size);