/// <inheritdoc />
public bool ApproximatelyEqual <TValue, TDifference>(TValue left, TValue right, TDifference delta)
{
SubtractionFunc <TValue, TDifference> subtractionFunc = GetSubtractionFunc <TValue, TDifference>();
int discriminator = Compare(left, right);
TDifference difference = discriminator < 0 ? subtractionFunc(right, left) : subtractionFunc(left, right);
return(Compare(difference, delta) <= 0);
}
public void GetSubtractionFunc_DateTime()
{
SubtractionFunc <DateTime, TimeSpan> differencer = comparisonSemantics.GetSubtractionFunc <DateTime, TimeSpan>();
Assert.AreEqual(new TimeSpan(-1, 0, 0, 0), differencer(new DateTime(2008, 03, 14), new DateTime(2008, 03, 15)));
}
public void GetSubtractionFunc_Double()
{
SubtractionFunc <double, double> differencer = comparisonSemantics.GetSubtractionFunc <double, double>();
Assert.AreEqual(1.5, differencer(3.5, 2.0));
}
private void AddPrimitiveDifferencer <T, D>(SubtractionFunc <T, D> subtractionFunc)
{
primitiveSubtractionFuncs.Add(typeof(T), new Pair <Type, Delegate>(typeof(D), subtractionFunc));
}