/// <summary>
/// calling function is divided by value passed in.
///
/// </summary>
/// <param name="divValue"></param>
/// <returns></returns>
public InfInt Divide(InfInt divValue)
{
InfInt quotient = new InfInt();
InfInt Dividend = this; // assigned to new infint because 'this' is read only
try
{
if (divValue.ToString() == "0" || divValue.ToString() == "-0") //cannot divide by 0
{
Console.WriteLine("Cannot Divide by 0");
return(null);
}
else
{
// if the divisor is not bigger than dividend the divide
while (Dividend.IsGreaterThan(divValue))
{ // if the divisor is not bigger than dividend the divide
Dividend = Dividend.Subtract(divValue);
quotient = quotient.Add(new InfInt("1")); // increment quotient
}
return(quotient);
}
}
catch (FormatException badDivisor)
{
throw badDivisor;
}
}
public InfInt Multiply(InfInt multValue)
{
InfInt temp = new InfInt("0");
int carry = 0;
if ((multValue.ToString() == "0" || multValue.ToString() == "-0") || (this.ToString() == "0" || this.ToString() == "-0"))
{
temp = new InfInt("0");
return(temp);
}
else
{
for (int i = (DIGITS - 1); i >= 0; i--)
{
int offset = i;
carry = 0;
for (int j = (DIGITS - 1); j >= 0; j--)
{
temp.Integer[j + offset] = temp.Integer[j + offset] + (this.Integer[i] * multValue.Integer[j]) + carry;
if (temp.Integer[j] > 9)
{
carry = temp.Integer[j] / 10;
temp.Integer[j] %= 10;
}
else
{
carry = 0;
}
}
}
return(temp);
}
}
public int CompareTo(object obj)
{
try
{
InfInt otherInt = (InfInt)obj;
if (Integer.ToString() == otherInt.ToString()) //check if exact same value before looping
{
return(0);
}
else
{
for (int i = 0; i < DIGITS; i++)
{
if (Integer[i] > otherInt.Integer[i])
{
return(1);
}
else if (Integer[i] < otherInt.Integer[i])
{
return(-1);
}
}
return(0);
}
}
catch (Exception e)
{
throw e;
}
}