third
Computes the 3rd order loss function for a given value of x. Denominated per the support: (1/6)Emax(X-x,0)*max(X-x-1,0)*max(X-x-2,0) when X is discrete, (1/6)Emax(X-x,0)^3 when X is continuous.
Return
The 3rd order loss function value at x
Parameters
x
The value to be evaluated