docs: public static byte[] hashToBytes(final double datum, final long seed) {
      final double d = (datum == 0.0) ? 0.0 : datum; //canonicalize -0.0, 0.0
      final long[] data = { Double.doubleToLongBits(d) }; //canonicalize all NaN forms
      return toByteArray(hash(data, seed));
    }