//Returns a string representing the division of the mathematical values the operands represent.
public static string DivideStrings(string operand1, string operand2)
{
if (operand1 == "0")
{
return("0");
}
if (operand2 == "1")
{
return(operand1);
}
if (DifferentiationTokenizer.IsNumber(operand1) && DifferentiationTokenizer.IsNumber(operand2))
{
return((int.Parse(operand1) / int.Parse(operand2)).ToString());
}
return(ToPrefixFormat(operand1, operand2, '/'));
}
//Returns a string representing the addition of the mathematical values the operands represent.
//Also support operatorSymbol = '-'. Then it acts as subtraction on the values.
public static string AddStrings(string operand1, string operand2, char operatorSymbol = '+')
{
if (operand1 == "0")
{
return((operatorSymbol == '-') ? InvertString(operand2) : operand2);
}
if (operand2 == "0")
{
return(operand1);
}
if (DifferentiationTokenizer.IsNumber(operand1) && DifferentiationTokenizer.IsNumber(operand2))
{
return((int.Parse(operand1) + (operatorSymbol == '+' ? 1 : -1) * int.Parse(operand2)).ToString());
}
return(ToPrefixFormat(operand1, operand2, operatorSymbol));
}
//Returns a string representing the power function applied to the mathematical values the operands represent.
public static string PowerStrings(string operand1, string operand2)
{
if (operand2 == "0")
{
return("1");
}
if (operand2 == "1")
{
return(operand1);
}
if (operand1 == "0")
{
return("0");
}
if (DifferentiationTokenizer.IsNumber(operand1) && DifferentiationTokenizer.IsNumber(operand2))
{
return(((int)Math.Round(Math.Pow(int.Parse(operand1), int.Parse(operand2)))).ToString());
}
return(ToPrefixFormat(operand1, operand2, '^'));
}
