public void Round_ReturnsRoundedNumber()
{
// arrange
float a = 77.123f;
float b = 99.987f;
float c = 88.34567f;
// act
a = PMath.Round(a);
b = PMath.Round(b);
c = PMath.Round(c, 3);
// assert
Assert.AreEqual(77, a);
Assert.AreEqual(100, b);
Assert.AreEqual(88.346f, c);
}