public static string FromBigInteger(this NumeralSystem system, BigInteger value, int fixedLength = 0, int groupSize = 0, string groupSeparator = " ")
{
var chars = new char[20];
var charcount = 0;
do
{
chars[chars.Length - charcount - 1] = system.GetSymbolFor((int)(value % system.Base));
value = value / system.Base;
charcount++;
if (charcount >= chars.Length)
{
var oldchars = chars;
chars = new char[oldchars.Length + 30];
Array.Copy(oldchars, 0, chars, 30, oldchars.Length);
}
} while (value > 0);
var result = new String(chars, chars.Length - charcount, charcount);
if (result.Length < fixedLength)
{
result = new String(system.GetSymbolFor(0), fixedLength - result.Length) + result;
}
if (result.Length > groupSize && groupSize > 0 && !String.IsNullOrEmpty(groupSeparator))
{
return(String.Join(groupSeparator, result.Chunked(groupSize, true)));
}
return(result);
}
