Function TEST_F

publication/source_code/test/test_chimp128.cpp:58–150

};

TEST_F(chimp128_test, test_chimp) {
	for (auto& dataset : alp_bench::get_alp_dataset()) {
		std::ifstream ifile(dataset.csv_file_path, std::ios::in);
		ASSERT_EQ(ifile.fail(), false);

		// Read Data
		double num = 0.0;
		// keep storing values from the text file so long as data exists:
		size_t c {0};
		while (ifile >> num) {
			dbl_arr[c] = num;
			c          = c + 1;
		}

		// Init Encoding
		com_stt.Reset();
		com_stt.output.SetStream(data_arr);
		com_stt.leading_zero_buffer.SetBuffer(leading_zero_arr);
		com_stt.flag_buffer.SetBuffer(flags_arr);
		com_stt.packed_data_buffer.SetBuffer(packed_data_arr);

		/*
		 *
		 * Encode
		 *
		 */
		uint64_p = reinterpret_cast<uint64_t*>(dbl_arr);
		for (size_t i {0}; i < 1024; ++i) {
			alp_bench::Chimp128Compression<uint64_t, false>::Store(uint64_p[i], com_stt);
		}
		com_stt.Flush();
		com_stt.output.Flush();

		// Init decoding
		leading_zero_block_count = com_stt.leading_zero_buffer.BlockCount();
		leading_zero_block_size  = static_cast<idx_t>(leading_zero_block_count) * 8;
		unpacked_index           = 0;
		leading_zero_index       = 0;
		chimp_de_state.input.SetStream(data_arr);
		flag_buffer.SetBuffer(flags_arr);
		leading_zero_buffer.SetBuffer(leading_zero_arr);

		/*
		 *
		 * DECODE
		 *
		 */

		// Decode flags
		flags[0] = alp_bench::ChimpConstants::Flags::VALUE_IDENTICAL; // First value doesn't require a flag
		for (idx_t i = 0; i < 1023; i++) {
			flags[1 + i] = (alp_bench::ChimpConstants::Flags)flag_buffer.Extract();
		}

		// Decode leading zero
		for (idx_t i = 0; i < leading_zero_block_size; i++) {
			leading_zero_unpacked[i] =
			    alp_bench::ChimpConstants::Decompression::LEADING_REPRESENTATION[leading_zero_buffer.Extract()];