Method CheckMinMaxZeroesSign

cpp/src/parquet/statistics_test.cc:1418–1429

  template <typename Stats, typename Values>
  void CheckMinMaxZeroesSign(Stats stats, const Values& values) {
    stats->Update(values.data(), values.size(), /*null_count=*/0);
    ASSERT_TRUE(stats->HasMinMax());

    this->CheckEq(stats->min(), positive_zero_);
    ASSERT_TRUE(this->signbit(stats->min()));
    ASSERT_EQ(stats->EncodeMin(), EncodeValue(negative_zero_));

    this->CheckEq(stats->max(), positive_zero_);
    ASSERT_FALSE(this->signbit(stats->max()));
    ASSERT_EQ(stats->EncodeMax(), EncodeValue(positive_zero_));
  }

  // ARROW-5562: Ensure that -0.0f and 0.0f values are properly handled like in
  // parquet-mr