Bug fix for odd Nc

matlab/mcmc_ifac.m

@@ -30,6 +30,9 @@ function Ifac = mcmc_ifac(X, Nc)
 % along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
 
 Nc = min(Nc, length(X)/2);
+if mod(Nc,2),
+    Nc=Nc-1;
+end
 AcorrXSIM = autocorr(X(:), Nc);
 %
 %Calculate the Parzen Weight