public static BigNumber operator +(BigNumber firstNumber, BigNumber secondNumber)
{
BigNumber result = null;
if (firstNumber.sign == secondNumber.sign)
{
result = NumberOperation.Sum(firstNumber, secondNumber);
result.sign = firstNumber.sign;
}
else
{
var compareResult = (Abs(firstNumber)).CompareTo(Abs(secondNumber));
if (compareResult == 1)
{
result = NumberOperation.Diff(firstNumber, secondNumber);
result.sign = firstNumber.sign;
}
else if (compareResult == -1)
{
result = NumberOperation.Diff(secondNumber, firstNumber);
result.sign = secondNumber.sign;
}
else
{
result = new BigNumber(0);
}
}
return(result);
}
public static BigNumber operator /(BigNumber firstNumber, BigNumber secondNumber)
{
if (NumberUtils.IsZero(secondNumber))
{
throw new DivideByZeroException();
}
var result = NumberOperation.Divide(Abs(firstNumber), Abs(secondNumber));
if (firstNumber.sign != secondNumber.sign)
{
result.sign = -1;
}
return(result);
}
public static BigNumber operator *(BigNumber firstNumber, BigNumber secondNumber)
{
BigNumber result = new BigNumber();
if (Abs(firstNumber) > Abs(secondNumber))
{
result = NumberOperation.Multiply(Abs(firstNumber), Abs(secondNumber));
}
else
{
result = NumberOperation.Multiply(Abs(secondNumber), Abs(firstNumber));
}
if (firstNumber.sign != secondNumber.sign)
{
result.sign = -1;
}
return(result);
}
