ImageMagick.ChannelPerceptualHash.ParseHash C# (CSharp) Метод

    private void ParseHash(string hash)
    {
      _Hash = hash;

      for (int i = 0; i < 14; i++)
      {
        int hex;
        if (!int.TryParse(hash.Substring(i * 5, 5), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out hex))
          throw new ArgumentException("Invalid hash specified", nameof(hash));

        double value = (ushort)hex / Math.Pow(10.0, hex >> 17);
        if ((hex & (1 << 16)) != 0)
          value = -value;
        if (i < 7)
          _SrgbHuPhash[i] = value;
        else
          _HclpHuPhash[i - 7] = value;
      }
    }