BitSharp.Common.Bits.EncodeUInt64 C# (CSharp) Method

        public static void EncodeUInt64(ulong value, byte[] buffer, int offset)
        {
            EncodeInt64(unchecked((long)value), buffer, offset);
        }

 public void ToByteArray(byte[] buffer, int offset = 0)
 {
     for (var i = width - 1; i >= 0; i--)
     {
         Bits.EncodeUInt64(parts[i], buffer, offset);
         offset += 8;
     }
 }