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MEX function

in model statement

Contributed by Johannes Pfeifer

2) force no analytic derivative with mode_check;

1) allow to compute derivatives starting from NUMERICAL derivatives of jacobian and steady state: this has a minor cost in accuracy and allow apply without errors identification and estimation with numerical derivatives;
2) added trap in dynare_estimation_init: if steadystate changes param values, automaticly shifts to numerical derivs of jacoban and steady state +  analytic derivatives of all the rest;
3) bug fixes for 2nd order derivatives w.r.t. model parameters;

If options_.prior_trunc is set to zero (the default is strictly positive) then prior_correction is infinite because the prior density is zero (this is not true for the uniform prior)... This does not help the optimizer. Even if we do not fall in this case (because options_.prior_trunc>0 or becuase only uniform priors are used for the bounded parameters) the meaning of this correction is unclear.

- Recover value of nosaddle from _core routine (bug fix when type is 'prior');

associated to the endogenous variables in the decision rule.

vector (including auxiliary variables) even in case of error flag in
evaluating steady state