/// <summary>
/// Deals with trigonometric function button clicks.
/// </summary>
private void trigFunction(object sender, RoutedEventArgs e)
{
if (errors.Contains(resultBox.Text))
{
return;
}
Button button = (Button)sender;
string buttonText = button.Content.ToString();
string equation = "";
string result = "";
BigDecimal number = getNumber();
switch (currentTrigMode)
{
// Standard trig functions
case trigModes.STANDARD:
double radianAngle = Angles.Converter.radians((double)number, angleUnit);
switch (buttonText)
{
case "sin":
equation = "sin(" + number.ToString() + ")";
result = Math.Sin(radianAngle).ToString();
break;
case "cos":
equation = "cos(" + number.ToString() + ")";
result = Math.Cos(radianAngle).ToString();
break;
case "tan":
equation = "tan(" + number.ToString() + ")";
result = Math.Tan(radianAngle).ToString();
break;
}
break;
// Hyperbolic trig functions
case trigModes.HYPERBOLIC:
switch (buttonText)
{
case "sinh":
equation = "sinh(" + number + ")";
result = Math.Sinh((double)number).ToString();
break;
case "cosh":
equation = "cosh(" + number + ")";
result = Math.Cosh((double)number).ToString();
break;
case "tanh":
equation = "tanh(" + number + ")";
result = Math.Tanh((double)number).ToString();
break;
}
break;
// Arc trig functions
case trigModes.ARC:
switch (buttonText)
{
case "asin":
equation = "asin(" + number + ")";
result = Math.Asin((double)number).ToString();
break;
case "acos":
equation = "acos(" + number + ")";
result = Math.Acos((double)number).ToString();
break;
case "atan":
equation = "atan(" + number + ")";
result = Math.Atan((double)number).ToString();
break;
}
break;
}
// We need to convert the result to the given angle unit if arc trig functions are used
if (currentTrigMode == trigModes.ARC)
{
switch (angleUnit)
{
case Angles.units.DEGREES:
result = Angles.Converter.degrees(double.Parse(result), Angles.units.RADIANS).ToString();
break;
case Angles.units.GRADIANS:
result = Angles.Converter.gradians(double.Parse(result), Angles.units.RADIANS).ToString();
break;
default: // 'result' is in radians by default
break;
}
}
if (operationCheck)
{
equation = equationBox.Text + equation;
functionCheck = true;
}
updateEquationBox(equation);
showText(result);
}
/// <summary>
/// Deals with function button clicks.
/// </summary>
private void function(object sender, RoutedEventArgs e)
{
if (errors.Contains(resultBox.Text))
{
return;
}
Button button = (Button)sender;
string buttonText = button.Content.ToString();
BigDecimal number = getNumber();
string equation = "";
string result = "";
switch (buttonText)
{
// C# doesn't have a Math.factorial()? Who the f**k does that?!
case "n!":
if (number < 0 || number.ToString().Contains("."))
{
showError(INVALID_INPUT);
return;
}
if (number > 3248) // chose this number because the default windows calculator doesn't go beyond this number
{
showError(OVERFLOW);
return;
}
double res = 1;
if (number == 1 || number == 0)
{
result = res.ToString();
}
else
{
for (int i = 2; i <= number; i++)
{
res *= i;
}
}
equation = "fact(" + number.ToString() + ")";
result = res.ToString();
break;
case "ln":
equation = "ln(" + number + ")";
result = ((BigDecimal)Math.Log((double)number)).ToString();
break;
case "log":
equation = "log(" + number + ")";
result = Math.Log10((double)number).ToString();
break;
case "√":
equation = "√(" + number + ")";
result = Math.Sqrt((double)number).ToString();
break;
case "+/-":
equation = "negate(" + number + ")";
result = BigDecimal.Negate(number).ToString();
break;
case "F-E":
int eidx = resultBox.Text.IndexOf('E');
if (eidx != -1)
{
BigDecimal bf = number;
int exp = 0;
while (bf > 10 || bf < 1)
{
if (bf > 10)
{
bf /= 10;
++exp;
}
else if (bf < 1)
{
bf *= 10;
--exp;
}
else
{
break;
}
}
result = bf + (exp > 0 ? "E+" : "E") + exp;
}
else
{
}
equation = "F-E(" + number + ")";
break;
}
if (operationCheck)
{
equation = equationBox.Text + equation;
functionCheck = true;
}
updateEquationBox(equation);
showText(result);
}
