public static ulong convert(string numStr, byte orgSys)
{
ulong result = 0;
for (int i = 0; i < numStr.Length; i++)
{
result = result * orgSys + (ulong)(Digits.Dec(numStr.ElementAt(i)));
}
return(result);
}
public static string convert(string numStr, char orgSys, char dstSys)
{
return(convert(numStr, (byte)(Digits.Dec(orgSys) + 1), (byte)(Digits.Dec(dstSys) + 1)));
}