public HugeInteger(string value)
{
_stringValue = null;
value = value.Trim();
if (!value.StartsWith("-"))
{
Sign = HugeIntegerSign.Positive;
}
else
{
Sign = HugeIntegerSign.Negative;
value = value
.Substring(1)
.TrimStart('0');
}
_digits = value
.Select(digit => byte.Parse(digit.ToString()))
.Reverse()
.ToArray();
if (_digits.Length == 0)
{
_digits = null;
Sign = HugeIntegerSign.Positive;
}
_hashCode = null;
}
private HugeInteger(HugeIntegerSign sign, byte[] digits)
{
_stringValue = null;
digits = StripLeadingZeros(digits);
if (digits == null || digits.Length == 0)
{
_digits = null;
Sign = HugeIntegerSign.Positive;
}
else
{
var tempDigits = new List <byte>(digits);
for (int cnt = tempDigits.Count - 1; cnt >= 0; cnt--)
{
if (tempDigits[cnt] != 0)
{
break;
}
else
{
tempDigits.RemoveAt(cnt);
}
}
Sign = tempDigits.Count == 0 ? HugeIntegerSign.Positive : sign;
_digits = tempDigits.ToArray();
}
_hashCode = null;
}
private static HugeIntegerSign Flip(HugeIntegerSign sign)
{
switch (sign)
{
case HugeIntegerSign.Positive: return(HugeIntegerSign.Negative);
case HugeIntegerSign.Negative: return(HugeIntegerSign.Positive);
default: throw new Exception("Invalid sign: " + sign);
}
}
