private static int Compare(Number num1, Number num2)
{
if (num1.IsNegative && !num2.IsNegative)
{
return(-1);
}
if (!num1.IsNegative && num2.IsNegative)
{
return(1);
}
var notationCalc = new NotationCalculator(num1.Notation, num1.Value, num2.Value);
int resultOfComparingValues = notationCalc.Compare(num1.Value, num2.Value);
if (num1.IsNegative && num2.IsNegative)
{
if (resultOfComparingValues == 0)
{
return(resultOfComparingValues);
}
return(resultOfComparingValues != -1 ? -1 : 1);
}
return(resultOfComparingValues);
}
private static string GetSubtraction(Number num1, Number num2)
{
var notationCalculator = new NotationCalculator(_notation, num1.Value, num2.Value);
string prefix = "";
int comparingResult = notationCalculator.Compare(num1.Value, num2.Value);
if (!num1.IsNegative && !num2.IsNegative && comparingResult == 1)
{
prefix = "-";
notationCalculator = new NotationCalculator(_notation, num2.Value, num1.Value);
}
else if (num1.IsNegative ^ num2.IsNegative)
{
if (num1.IsNegative)
{
prefix = "-";
}
notationCalculator = new NotationCalculator(_notation, num1.Value, num2.Value);
return(prefix + notationCalculator.GetSum());
}
else if (num1.IsNegative && num2.IsNegative)
{
if (comparingResult > -1)
{
notationCalculator = new NotationCalculator(_notation, num2.Value, num1.Value);
return(notationCalculator.GetSubtraction());
}
notationCalculator = new NotationCalculator(_notation, num1.Value, num2.Value);
return("-" + notationCalculator.GetSubtraction());
}
return(prefix + notationCalculator.GetSubtraction());
}
private static string GetDivision(Number num1, Number num2)
{
string prefix = "";
if (num1.IsNegative ^ num2.IsNegative)
{
prefix = "-";
}
var notationCalculator = new NotationCalculator(_notation, num1.Value, num2.Value);
return(prefix + notationCalculator.GetDivision());
}
