[Gretl-users] Constrained maximization in gretl

The following code (adapted from the manual): mle logl = check ? - ln(pstr_cssr(y,X,q,gamma,c,m,Z) : NA scalar check = (gamma > zeros(r,1)) && (c >= c_min) && (c <=c_max) params gamma c end mle simply checks that the unconstrained maximum is in the parameter space and returns an error if it is not so. But is there a way to find such a constrained maximum in gretl? If there is not, what is the best way to circumvent the problem? Thanks Giuseppe