| public static PositiveReverse ( this input, int width ) : System.Numerics.BigInteger | ||
| input | this | |
| width | int | |
| return | System.Numerics.BigInteger | |
public static BigInteger PositiveReverse(this BigInteger input, int width)
{
var result = new List<byte>();
var bytes = input.ToByteArray();
var work = new byte[width];
Array.Copy(bytes, 0, work, 0, bytes.Length - 1); // Length -1 : positive BigInteger
for (int i = 0; i < work.Length; i++) {
result.Add((byte)(~work[i]));
}
result.Add(0); // positive BigInteger
return new BigInteger(result.ToArray());
}
