//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));
}
/// <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();
}
