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compressGather

Some compression algorithms for common types Including integer compression algorithm,both positive and negative Numbers are common reference zig 7bit. Lossless compression of floating point Numbers reference gorilla paper encoding. Lossy compression of floating point Numbers, you need to pass in a few decimal places, Floating-point compression is currently supported only type float, Lossy compression reuse integer method.

// signed integer compress std::vector integer_set; for (int i = 0; i < 1024; i++) { integer_set.push_back(i); } auto stream_str = compress::standardIntegerCompress(integer_set); auto integer_result = compress::standardIntegerUncompress(stream_str); for (auto integer : integer_result) { std::cout << result << ","; }

// unsigned integer compress std::vector<uint64_t> unsigned_integer_set; for (int i = 0; i < 1024; i++) { unsigned_integer_set.push_back(i); } auto stream_str = compress::integerCompress<uint64_t>(unsigned_integer_set); auto result_vectors = compress::integerUncompress<uint64_t>(stream_str); for (auto integer : integer_result) { std::cout << result << ","; }

// float compress std::vector float_set; for (int i = 0; i < 1024; i++) { temp_vector.push_back(i * 0.0001); } // keep four digits behind the decimal point auto stream_str = compress::floatLossyCompress(float_set, 4); auto result_vectors = compress::floatLossyUncompress(stream_str, 4); for (auto result : result_vectors) { std::cout << result << ",";d }

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Some compression algorithms for common types

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