- Already compressed objects are not fit for compression since they do not have compressible patterns.
Such objects do not produce efficient [`LZ compression`](https://en.wikipedia.org/wiki/LZ77_and_LZ78)
which is a fitness factor for a lossless data compression.

Pre-compressed input typically compresses in excess of 2GiB/s per core,
so performance impact should be minimal even if precompressed data is re-compressed.

    int cmpXToRoundArbitrarily;

    if (roundArbitrarilyAsLong == Long.MAX_VALUE) {
      /*
       * For most values, the conversion from roundArbitrarily to roundArbitrarilyAsLong is
       * lossless. In that case we can compare x to roundArbitrarily using Longs.compare(x,
       * roundArbitrarilyAsLong). The exception is for values where the conversion to double rounds