/// <summary>
/// Raises the number in the results box to the power of 1/3
/// </summary>
private void btn_cubeRoot_Click(object sender, RoutedEventArgs e)
{
if (!thereWasError)
{
double numToRoot = Convert.ToDouble(outResults.Text);
if (numToRoot < 0)
{
outResults.Text = "-" + Arithmetic.nthRoot(Math.Abs(numToRoot), 3).ToString();
}
else
{
outResults.Text = Arithmetic.nthRoot(numToRoot, 3).ToString();
}
}
}
/// <summary>
/// Makes the number in the results box the square root of the number originally in there.
/// </summary>
private void btn_sqrt_Click(object sender, RoutedEventArgs e)
{
if (!thereWasError)
{
if (Convert.ToDouble(outResults.Text) >= 0)
{
outResults.Text = Arithmetic.nthRoot(Convert.ToDouble(outResults.Text), 2).ToString();
}
else //Square roots of negative numbers are impossible
{
outStatus.Text = Messages.error_InvNumber;
outResults.Text = Messages.error_InvNumber;
thereWasError = true;
}
}
}
/// <summary>
/// Performs the operation requested and stores the number in the lastResults variable.
/// </summary>
public void performOperation()
{
//For the most part, this is the same as the btn_calculate_Click, but not setting isStarting to true,
// and storing the answer in the lastResults variable.
if (!thereWasError)
{
try
{
switch (curOperation)
{
case "add":
outResults.Text = (lastResults + Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
break;
case "subtract":
outResults.Text = (lastResults - Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
break;
case "mult":
outResults.Text = (lastResults * Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
break;
case "divide":
if (outResults.Text != "0")
{
outResults.Text = (lastResults / Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
}
else
{
outStatus.Text = Messages.error_DivZero;
outResults.Text = Messages.error_DivZero;
thereWasError = true;
}
break;
case "log":
if (Convert.ToDouble(outResults.Text) > 0)
{
outResults.Text = Arithmetic.nthLogBase(lastResults, Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
}
else
{
outResults.Text = Messages.error_InvNumber;
outStatus.Text = Messages.error_log.Replace("%s", Messages.error_log_base);
thereWasError = true;
}
break;
case "yroot":
double rootNum = Convert.ToDouble(outResults.Text);
if (rootNum % 2.0 == 0) //No negatives allowed
{
if (lastResults < 0)
{
outResults.Text = Messages.error_InvNumber;
outStatus.Text = Messages.error_InvNumber;
thereWasError = true;
}
else
{
outResults.Text = Arithmetic.nthRoot(lastResults, rootNum).ToString();
lastResults = Convert.ToDouble(outResults.Text);
}
}
else //Negatives allowed
{
if (lastResults < 0)
{
outResults.Text = "-" + Arithmetic.nthRoot(Math.Abs(lastResults), rootNum).ToString();
lastResults = Convert.ToDouble(outResults.Text);
}
else
{
outResults.Text = Arithmetic.nthRoot(lastResults, rootNum).ToString();
lastResults = Convert.ToDouble(outResults.Text);
}
}
break;
case "pow":
outResults.Text = Arithmetic.nthPower(lastResults, Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
break;
case "mod":
if (outResults.Text != "0")
{
outResults.Text = (lastResults % Convert.ToDouble(outResults.Text)).ToString();
lastResults = Convert.ToDouble(outResults.Text);
}
else
{
outStatus.Text = Messages.error_DivZero;
outResults.Text = Messages.error_DivZero;
thereWasError = true;
}
break;
}
if (!thereWasError && (Double.IsInfinity(lastResults) || Double.IsInfinity(Convert.ToDouble(outResults.Text))))
{
outResults.Text = Messages.error_overflow;
outStatus.Text = Messages.error_overflow;
thereWasError = true;
}
}
//Also, catch those potential errors.
catch (OverflowException)
{
outResults.Text = Messages.error_overflow;
outStatus.Text = Messages.error_overflow;
thereWasError = true;
}
}
}
/// <summary>
/// Calculates the final results from the numbers given and the operation(s) requested.
/// </summary>
private void btn_calculate_Click(object sender, RoutedEventArgs e)
{
if (!thereWasError)
{
if (!isStarting) //The potential constant is usually from the last number entered.
{
potentialConstant = Convert.ToDouble(outResults.Text);
}
switch (curOperation)
{
case "add": //Show the results from adding...
if (!isStarting)
{
outResults.Text = (lastResults + Convert.ToDouble(outResults.Text)).ToString();
}
else
{
outResults.Text = (Convert.ToDouble(outResults.Text) + potentialConstant).ToString();
}
break;
case "subtract": //...or subtracting...
if (!isStarting)
{
outResults.Text = (lastResults - Convert.ToDouble(outResults.Text)).ToString();
}
else
{
outResults.Text = (Convert.ToDouble(outResults.Text) - potentialConstant).ToString();
}
break;
case "mult": //...or multiplying...
if (!isStarting)
{
outResults.Text = (lastResults * Convert.ToDouble(outResults.Text)).ToString();
}
else
{
outResults.Text = (Convert.ToDouble(outResults.Text) * potentialConstant).ToString();
}
break;
case "divide": //...or dividing...
if (!isStarting)
{
if (outResults.Text != "0") //Also if denominator is zero, throw an error.
{
outResults.Text = (lastResults / Convert.ToDouble(outResults.Text)).ToString();
}
else
{
outStatus.Text = Messages.error_DivZero;
outResults.Text = Messages.error_DivZero;
thereWasError = true;
}
}
else
{
outResults.Text = (Convert.ToDouble(outResults.Text) / potentialConstant).ToString();
}
break;
case "log": //...or logarithms...
if (Convert.ToDouble(outResults.Text) > 0)
{
outResults.Text = Arithmetic.nthLogBase(lastResults, Convert.ToDouble(outResults.Text)).ToString();
}
else //Logarithms can't have a negative number.
{
outResults.Text = Messages.error_InvNumber;
outStatus.Text = Messages.error_log.Replace("%s", Messages.error_log_base);
thereWasError = true;
}
break;
case "yroot": //...or custom roots...
double rootNum = Convert.ToDouble(outResults.Text);
if (rootNum % 2.0 == 0) //Root is even. No negatives allowed.
{
if (lastResults < 0)
{
outResults.Text = Messages.error_InvNumber;
outStatus.Text = Messages.error_InvNumber;
thereWasError = true;
}
else
{
outResults.Text = Arithmetic.nthRoot(lastResults, rootNum).ToString();
}
}
else //Root is odd. Negatives are allowed.
{
if (lastResults < 0)
{
//For some reason, this won't accept negative numbers... at all. So just add a negative sign if it's negative.
outResults.Text = "-" + Arithmetic.nthRoot(Math.Abs(lastResults), rootNum).ToString();
}
else
{
outResults.Text = Arithmetic.nthRoot(lastResults, rootNum).ToString();
}
}
break;
case "pow": //...or raising to powers...
outResults.Text = Arithmetic.nthPower(lastResults, Convert.ToDouble(outResults.Text)).ToString();
break;
case "mod": //...or the modulus operator.
if (!isStarting)
{
if (outResults.Text != "0")
{
outResults.Text = (lastResults % Convert.ToDouble(outResults.Text)).ToString();
}
else
{
outStatus.Text = Messages.error_DivZero;
outResults.Text = Messages.error_DivZero;
thereWasError = true;
}
}
else
{
outResults.Text = (Convert.ToDouble(outResults.Text) % potentialConstant).ToString();
}
break;
}
//Final result display if there was no error.
if (!thereWasError)
{
outStatus.Text = Messages.equalNum;
}
if (!thereWasError && (Double.IsInfinity(lastResults) || Double.IsInfinity(Convert.ToDouble(outResults.Text))))
{
outResults.Text = Messages.error_overflow;
outStatus.Text = Messages.error_overflow;
thereWasError = true;
}
if (!thereWasError && (Double.IsNaN(lastResults) || Double.IsNaN(Convert.ToDouble(outResults.Text))))
{
outResults.Text = Messages.error_InvNumber;
outStatus.Text = Messages.error_InvNumber;
thereWasError = true;
}
//Also, since the equal button was pressed, this is the final answer, and therefore, we're starting a new equation.
isStarting = true;
}
}