/// <summary>
/// Metóda btn_neg_Click, ktorá je volaná pri stlačení tlačidla negácie.
/// Metóda obráti znamienko čísla nachádzajúceho sa v textBoxe výsledoku pomocou metódy volanej z matematickej knižnice.
/// Nastaví sa font podľa velkosti výsledku a priorita kliknutia na tlačidlo enter.
/// </summary>
/// <param name="sender">Objekt, ktorý sa posiela do danej metódy</param>
/// <param name="e">Dáta udalosti, ktoré sa posielajú do danej metódy</param>
private void btn_neg_Click(object sender, EventArgs e)
{
MathHead mh = new MathHead();
resultBox.Text = mh.Neg(Double.Parse(resultBox.Text)).ToString();
resultValue = Double.Parse(resultBox.Text);
NewFont();
btn_enter.Focus();
}
//testovanie MathHead Faktorial
public void Function_Fakt()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(120, mh.Fact(5));
Assert.AreEqual(1, mh.Fact(1));
Assert.AreEqual(1, mh.Fact(0));
Assert.AreEqual(479001600, mh.Fact(12));
// Doplnit osetrenie ak faqtorial sa == zaporne cislo
}
//testovanie MathHead Krat
public void Function_Ml()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(2, mh.Mul(2, 1));
Assert.AreEqual(-81, mh.Mul(9, -9));
Assert.AreEqual(60, mh.Mul(-6, -10));
Assert.AreEqual(-42, mh.Mul(-42, 1));
Assert.AreEqual(0, mh.Mul(0, 1987));
Assert.AreEqual(400000000, mh.Mul(20000, 20000));
Assert.AreEqual(-100000000, mh.Mul(-100000000, 1));
Assert.AreEqual(44.1, mh.Mul(6.3, 7));
}
//testovanie MathHead ^2
public void Function_SQRT()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(144, mh.Sqrt(12));
Assert.AreEqual(64000000, mh.Sqrt(8000));
Assert.AreEqual(4, mh.Sqrt(2));
Assert.AreEqual(1, mh.Sqrt(1));
Assert.AreNotEqual(-9, mh.Sqrt(-3));
Assert.AreNotEqual(-64, mh.Sqrt(-8));
Assert.AreNotEqual(-64000000, mh.Sqrt(-8000));
}
//testovanie MathHead negacie
public void Function_Neg()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(-1, mh.Negacia(1));
Assert.AreEqual(-100000000, mh.Negacia(100000000));
Assert.AreEqual(0, mh.Negacia(0));
Assert.AreEqual(5000, mh.Negacia(-5000));
Assert.AreNotEqual(-500, mh.Negacia(-500));
Assert.AreNotEqual(48, mh.Negacia(48));
Assert.AreNotEqual(1, mh.Negacia(1));
Assert.AreEqual(4.5, mh.Negacia(-4.5));
Assert.AreEqual(-9.6, mh.Negacia(9.6));
}
//testovanie MathHead scitavanie
public void Function_Sum()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(-1, mh.Sum(1, -2));
Assert.AreNotEqual(10, mh.Sum(5, 6));
Assert.AreEqual(984, mh.Sum(983, 1));
Assert.AreEqual(2000, mh.Sum(1965, 35));
Assert.AreEqual(-100, mh.Sum(-50, -50));
Assert.AreEqual(0, mh.Sum(-659, 659));
Assert.AreEqual(0, mh.Sum(0, 0));
Assert.AreEqual(-50, mh.Sum(-78, 28));
Assert.AreEqual(450000000, mh.Sum(400000000, 50000000));
Assert.AreEqual(-300000000, mh.Sum(-150000000, -150000000));
}
//testovanie MathHead Odmocnina
public void Function_Root()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(3, mh.Root(9, 2));
Assert.AreEqual(9, mh.Root(81, 2));
Assert.AreEqual(0, mh.Root(0, 5));
Assert.AreEqual(60000000, mh.Root(60000000, 1));
Assert.AreEqual(3.9, mh.Root(59.319, 3), esp);
Assert.AreEqual(12, mh.Root(144, 2));
Assert.AreEqual(1000, mh.Root(1000000, 2));
Assert.AreNotEqual(45, mh.Root(456, 9));
Assert.AreNotEqual(74, mh.Root(978, 2));
// pridat osetrenie pre vstup mensi ako 0
}
//testovanie MathHead vypocet s exponentom
public void Function_Exp()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(9, mh.Exp(3, 2));
Assert.AreEqual(42875, mh.Exp(35, 3));
Assert.AreEqual(147008443, mh.Exp(43, 5));
Assert.AreEqual(25, mh.Exp(-5, 2));
Assert.AreEqual(-125, mh.Exp(-5, 3));
Assert.AreEqual(0.729, mh.Exp(0.9, 3), esp);
Assert.AreEqual(3.652264, mh.Exp(1.54, 3));
Assert.AreNotEqual(745, mh.Exp(9, 5));
Assert.AreNotEqual(0.56, mh.Exp(1.26, 4));
Assert.AreNotEqual(654, mh.Exp(7, 6));
Assert.AreNotEqual(1231456, mh.Exp(53, 2));
}
//testovanie MathHead scitavanie
public void Function_Sub()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(0, mh.Sub(1, 1));
Assert.AreEqual(-1, mh.Sub(0, 1));
Assert.AreEqual(1, mh.Sub(1, 0));
Assert.AreEqual(0, mh.Sub(-5, -5));
Assert.AreEqual(150000000, mh.Sub(150000001, 1));
Assert.AreEqual(-189000000, mh.Sub(-300000000, -111000000));
Assert.AreEqual(687, mh.Sub(743, 56));
Assert.AreEqual(-42, mh.Sub(-40, 2));
Assert.AreEqual(5.364, mh.Sub(6, 0.636));
Assert.AreEqual(-765.315, mh.Sub(-1000, -234.685));
Assert.AreEqual(897, mh.Sub(800, -97));
Assert.AreEqual(0, mh.Sub(0, 0));
}
//testovanie MathHead Delenie
public void Function_Div()
{
MathHeadFunctiones mh = new MathHeadFunctiones();
Assert.AreEqual(39, mh.Div(156, 4));
Assert.AreEqual(1.8, mh.Div(9, 5));
Assert.AreEqual(-2, mh.Div(-6, 3));
Assert.AreEqual(129301, mh.Div(129301, 1));
Assert.AreEqual(2.25, mh.Div(9, 4));
Assert.AreEqual(2.25, mh.Div(-9, -4));
Assert.AreEqual(1000000, mh.Div(10000000, 10));
Assert.AreEqual(0.5, mh.Div(800, 1600));
Assert.AreEqual(-8, mh.Div(72, -9));
Assert.AreNotEqual(12, mh.Div(698, 68));
Assert.AreNotEqual(145, mh.Div(100000000, 78000000));
// pridat delenie 0 !!!
}
/// <summary>
/// Metóda btn_op_Click, ktorá je volaná pri stlačení tlačidla operácie. Metóda vykoná predchádzajúcu operáciu (pokiaľ existuje).
/// Vypočíta operáciu pomocou metód volaných z matematickej knižnice. Ošetruje chybové stavy.
/// Nastavuje nadchádzajúcu operáciu na základe aktuálne kliknutej operácie. Pokiaľ bola operácia stlačená bezprostredne pred akutálnou operáciou,
/// stará operácie je prepísaná novou (aktuálne stlačenou operáciou).
/// </summary>
/// <param name="sender">Objekt, ktorý sa posiela do danej metódy</param>
/// <param name="e">Dáta udalosti, ktoré sa posielajú do danej metódy</param>
private void btn_op_Click(object sender, EventArgs e)
{
MathHead mh = new MathHead();
Button button = (Button)sender;
if (operationPressed == true && (operation == "+" || operation == "-" || operation == "*" || operation == "/" || operation == "^" || operation == "\u221A"))
{
operation = button.Text;
lbl_history.Text = lbl_history.Text.Remove(lbl_history.Text.Length - 1) + operation;
}
else
{
if (enterPressed == true)
{
operation = button.Text;
lbl_history.Text = historyValue.ToString() + operation;
enterPressed = false;
}
else
{
try
{
Double.Parse(resultBox.Text);
}
catch (FormatException)
{
Error(0);
return;
}
historyStringValue = Double.Parse(resultBox.Text);
switch (operation)
{
case "+":
if (button.Text == "^" || button.Text == "\u221A" || button.Text == "*" || button.Text == "/")
{
betweenValue = historyValue;
historyValue = Double.Parse(resultBox.Text);
oldOperation = operation;
operation = button.Text;
}
else
{
resultValue = mh.Add(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
}
break;
case "^":
try
{
Int32.Parse(resultBox.Text);
}
catch (FormatException)
{
Error(2);
return;
}
if (Int32.Parse(resultBox.Text) < 0)
{
Error(2);
return;
}
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "*":
resultValue = betweenValue * mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "/":
resultValue = betweenValue / mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
oldOperation = "";
break;
}
break;
case "\u221A":
if (historyValue == 0)
{
Error(4);
return;
}
if (Double.Parse(resultBox.Text) < 0)
{
Error(1);
return;
}
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "*":
resultValue = betweenValue * mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "/":
resultValue = betweenValue / mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
oldOperation = "";
break;
}
break;
case "-":
if (button.Text == "^" || button.Text == "\u221A" || button.Text == "*" || button.Text == "/")
{
betweenValue = historyValue;
historyValue = Double.Parse(resultBox.Text);
oldOperation = operation;
operation = button.Text;
}
else
{
resultValue = mh.Sub(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
}
break;
case "*":
if (button.Text == "^" || button.Text == "\u221A" || button.Text == "/")
{
betweenValue = historyValue;
historyValue = Double.Parse(resultBox.Text);
oldOperation = operation;
operation = button.Text;
}
else
{
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "/":
resultValue = betweenValue / mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
default:
if (historyValue == 0)
{
historyValue = 1;
}
resultValue = mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
oldOperation = "";
break;
}
}
break;
case "/":
if (button.Text == "^" || button.Text == "\u221A" || button.Text == "*")
{
betweenValue = historyValue;
historyValue = Double.Parse(resultBox.Text);
oldOperation = operation;
operation = button.Text;
}
else
{
if (Double.Parse(resultBox.Text) == 0)
{
Error(4);
return;
}
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
case "*":
resultValue = betweenValue * mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
oldOperation = "";
break;
}
}
break;
default:
historyValue = historyStringValue;
break;
}
if (funcPressed == true)
{
lbl_history.Text = historyStringValue.ToString() + button.Text;
}
else
{
lbl_history.Text = lbl_history.Text + historyStringValue.ToString() + button.Text;
}
operation = button.Text;
}
}
funcPressed = false;
enterPressed = false;
operationPressed = true;
NewFont();
maxChar = false;
btn_enter.Focus();
}
/// <summary>
/// Metóda btn_enter_Click, ktorá je volaná pri stlačení tlačidla "rovná sa". Má za úlohu zistiť naposledy kliknutú operáciu
/// a na základe nej vypočítať výsledok a ukončiť sekvenciu operácií. Tento výsledok sa následne vypíše do textBox výsledku a do histórie sa vypíše história operácií
/// zakončená posledným číslom a znaminekom rovnosti. Ošetruje aj chybové stavy.
/// </summary>
/// <param name="sender">Objekt, ktorý sa posiela do danej metódy</param>
/// <param name="e">Dáta udalosti, ktoré sa posielajú do danej metódy</param>
private void btn_enter_Click(object sender, EventArgs e)
{
MathHead mh = new MathHead();
try
{
Double.Parse(resultBox.Text);
}
catch (FormatException)
{
Error(0);
return;
}
historyStringValue = Double.Parse(resultBox.Text);
switch (operation)
{
case "+":
resultValue = mh.Add(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
break;
case "-":
resultValue = mh.Sub(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
break;
case "*":
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "/":
resultValue = betweenValue / mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Mul(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
oldOperation = "";
break;
}
break;
case "^":
try
{
Int32.Parse(resultBox.Text);
}
catch (FormatException)
{
Error(2);
return;
}
if (Int32.Parse(resultBox.Text) < 0)
{
Error(2);
return;
}
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "*":
resultValue = betweenValue * mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "/":
resultValue = betweenValue / mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Exp(historyValue, Int32.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
oldOperation = "";
break;
}
break;
case "\u221A":
if (historyValue == 0)
{
Error(4);
return;
}
if (Double.Parse(resultBox.Text) < 0)
{
Error(1);
return;
}
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "*":
resultValue = betweenValue * mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "/":
resultValue = betweenValue / mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Root(Double.Parse(resultBox.Text), historyValue);
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
oldOperation = "";
break;
}
break;
case "/":
if (Double.Parse(resultBox.Text) == 0)
{
Error(4);
return;
}
else
{
switch (oldOperation)
{
case "+":
resultValue = betweenValue + mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "-":
resultValue = betweenValue - mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
case "*":
resultValue = betweenValue * mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
betweenValue = 0;
oldOperation = "";
break;
default:
resultValue = mh.Div(historyValue, Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
lbl_history.Text = lbl_history.Text + historyStringValue + "=";
oldOperation = "";
break;
}
}
break;
}
if (double.IsInfinity(resultValue))
{
Error(2);
return;
}
NewFont();
enterPressed = true;
operationPressed = false;
operation = "";
maxChar = false;
btn_enter.Focus();
}
/// <summary>
/// Metóda btn_fact_Click, ktorá je volaná pri stlačení tlačidla "x!". Metóda počíta faktorial čísla pomocou metódy Fact() volanej z matematickej knižnice
/// Ošetruje chybové stavy, pridá funkciu do histórie a výsledok vypíše do textBoxu výsledku.
/// </summary>
/// <param name="sender">Objekt, ktorý sa posiela do danej metódy</param>
/// <param name="e">Dáta udalosti, ktoré sa posielajú do danej metódy</param>
private void btn_fact_Click(object sender, EventArgs e)
{
MathHead mh = new MathHead();
if (enterPressed == true)
{
lbl_history.Text = "";
enterPressed = false;
}
double x;
if (Double.TryParse(resultBox.Text, out x))
{
if (x < 0)
{
lbl_history.Text = "";
historyStringValue = 0;
historyValue = 0;
resultBox.Font = new Font(resultBox.Font.FontFamily, 20);
resultBox.Text = "Neplatný vstup";
errorCode = 1;
funcPressed = false;
operationPressed = false;
enterPressed = true;
operation = "";
return;
}
}
try
{
UInt64.Parse(resultBox.Text);
}
catch (FormatException)
{
Error(1);
return;
}
catch (OverflowException)
{
Error(3);
return;
}
switch (operation)
{
case "+":
lbl_history.Text = lbl_history.Text + "fact(" + UInt64.Parse(resultBox.Text) + ")";
resultValue = historyValue + mh.Fact(UInt64.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
case "-":
lbl_history.Text = lbl_history.Text + "fact(" + UInt64.Parse(resultBox.Text) + ")";
resultValue = historyValue - mh.Fact(UInt64.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
case "*":
lbl_history.Text = lbl_history.Text + "fact(" + UInt64.Parse(resultBox.Text) + ")";
resultValue = historyValue * mh.Fact(UInt64.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
case "/":
lbl_history.Text = lbl_history.Text + "fact(" + UInt64.Parse(resultBox.Text) + ")";
resultValue = historyValue / mh.Fact(UInt64.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
default:
if (funcPressed == true)
{
lbl_history.Text = "fact(" + historyString + ")";
}
else
{
lbl_history.Text = lbl_history.Text + "fact(" + UInt64.Parse(resultBox.Text) + ")";
}
resultValue = mh.Fact(UInt64.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
}
if (resultValue == 0)
{
Error(3);
return;
}
historyString = lbl_history.Text;
operationPressed = false;
operation = "";
funcPressed = true;
NewFont();
maxChar = false;
btn_enter.Focus();
}
/// <summary>
/// Metóda btn_sqrt_Click, ktorá je volaná pri stlačení tlačidla "x2". Metóda počíta druhú mocninu čísla pomocou metódy Sqrt() volanej z matematickej knižnice.
/// Ošetruje chybové stavy, pridá funkciu do histórie a výsledok vypíše do textBoxu výsledku.
/// </summary>
/// <param name="sender">Objekt, ktorý sa posiela do danej metódy</param>
/// <param name="e">Dáta udalosti, ktoré sa posielajú do danej metódy</param>
private void btn_sqrt_Click(object sender, EventArgs e)
{
MathHead mh = new MathHead();
if (enterPressed == true)
{
lbl_history.Text = "";
enterPressed = false;
}
try
{
Double.Parse(resultBox.Text);
}
catch (FormatException)
{
Error(1);
return;
}
catch (OverflowException)
{
Error(3);
return;
}
if (double.IsInfinity(historyValue) || double.IsInfinity(double.Parse(resultBox.Text)))
{
Error(3);
return;
}
switch (operation)
{
case "+":
lbl_history.Text = lbl_history.Text + "sqrt(" + Double.Parse(resultBox.Text) + ")";
resultValue = historyValue + mh.Sqrt(Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
case "-":
lbl_history.Text = lbl_history.Text + "sqrt(" + Double.Parse(resultBox.Text) + ")";
resultValue = historyValue - mh.Sqrt(Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
case "*":
lbl_history.Text = lbl_history.Text + "sqrt(" + Double.Parse(resultBox.Text) + ")";
resultValue = historyValue * mh.Sqrt(Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
case "/":
lbl_history.Text = lbl_history.Text + "sqrt(" + Double.Parse(resultBox.Text) + ")";
resultValue = historyValue / mh.Sqrt(Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
default:
if (funcPressed == true)
{
lbl_history.Text = "sqrt(" + historyString + ")";
}
else
{
lbl_history.Text = lbl_history.Text + "sqrt(" + Double.Parse(resultBox.Text) + ")";
}
resultValue = mh.Sqrt(Double.Parse(resultBox.Text));
resultBox.Text = resultValue.ToString();
historyValue = resultValue;
break;
}
if (double.IsInfinity(resultValue))
{
Error(3);
return;
}
historyString = lbl_history.Text;
operationPressed = false;
operation = "";
funcPressed = true;
NewFont();
maxChar = false;
btn_enter.Focus();
}