/**
* @brief Výpočet smerodajnej odchýlky
*
* @param list Zoznam double, z ktorého vypočítať smerodajnú odchýlku
* @return Smerodajná odchýlka
*/
public static double GetStandartDeviation(List <double> list)
{
int N = list.Count;
double tmp = MatLib.subtract(GetSumSqr(list), MatLib.multiply(N, MatLib.square(GetArithmeticMean(list))));
try
{
tmp = MatLib.divide(tmp, N - 1);
}
catch (DivideByZeroException e)
{
Console.WriteLine("{0}", e.Message);
Console.WriteLine("Press any key to continue . . .");
Console.Read();
Environment.Exit(-1);
}
tmp = MatLib.sqrt(tmp);
return(tmp);
}
public void ShouldMultiply()
{
Assert.AreEqual(1, MatLib.multiply(1, 1));
Assert.AreEqual(0, MatLib.multiply(1, 0));
Assert.AreEqual(0, MatLib.multiply(100000, 0));
Assert.AreEqual(0, MatLib.multiply(0, 100000));
Assert.AreEqual(4, MatLib.multiply(2, 2));
Assert.AreEqual(-4, MatLib.multiply(2, -2));
Assert.AreEqual(6, MatLib.multiply(-2, -3));
Assert.AreEqual(625, MatLib.multiply(25, 25));
Assert.AreEqual(1.805375, MatLib.multiply(1.625, 1.111), Accuracy);
Assert.AreEqual(-1.805375, MatLib.multiply(-1.625, 1.111), Accuracy);
Assert.AreEqual(-1.805375, MatLib.multiply(1.625, -1.111), Accuracy);
Assert.AreEqual(1.805375, MatLib.multiply(-1.625, -1.111), Accuracy);
Assert.AreEqual(0.0009, MatLib.multiply(9, 0.0001), Accuracy);
Assert.AreNotEqual(100, MatLib.multiply(10, -10));
Assert.AreNotEqual(0.13, MatLib.multiply(0.4, 0.3));
Assert.AreNotEqual(-10000, MatLib.multiply(-100, -100));
Assert.AreNotEqual(-0.002, MatLib.multiply(0.0002, -0.1), Accuracy);
}