mydisc function

Evaluates discriminant of the cubic equation

mydisc(parameters, mydelta, Rmax)

Arguments

• parameters: A vector of parameters (real numbers) that is generated by estimating the short, intermediate and auxiliary regressions.
• mydelta: The value of delta (real number).
• Rmax: The value of Rmax (real number)

Returns

Returns a value of 0 or 1; 0 (if discriminant is positive) and 1 (if discriminant is nonpositive)