MATLAB Nargout Function

[anthropos]

The MATLAB website states that "the number of arguments is negative if the function has a variable number of arguments" when I use nargin to test such functions.

 

So when I enter nargout ode45, I get -5. But why is the absolute value 5, does that mean it's the maximum number of outputs that ode45 can release? It is not a random number because I keep getting the same result after typing in.

 

Does anyone know why this is happening? Thank you