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Added specialized code for purely forward models.

time-shift
Stéphane Adjemian (Charybdis) 2010-11-20 11:34:18 +01:00
parent 771b4e766c
commit 1626b0aa76
1 changed files with 5 additions and 3 deletions
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8
matlab/simult_.m
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@ -41,7 +41,7 @@ y_(:,1) = y0;
if ~options_.k_order_solver
if iorder==1
y_(:,1) = y_(:,1) - dr.ys;
y_(:,1) = y_(:,1)-dr.ys;
end
end
@ -71,13 +71,15 @@ else
k2 = k2(:,1)+(M_.maximum_lag+1-k2(:,2))*M_.endo_nbr;
switch iorder
case 1
if isempty(dr.ghu)
if isempty(dr.ghu)% For (linearized) deterministic models.
for i = 2:iter+M_.maximum_lag
yhat = y_(dr.order_var(k2),i-1);
y_(dr.order_var,i) = dr.ghx*yhat;
end
elseif isempty(dr.ghx)% For (linearized) purely forward variables (no state variables).
y_(dr.order_var,:) = dr.ghu*transpose(ex_);
else
epsilon = dr.ghu*transpose(ex_); clear('ex_');
epsilon = dr.ghu*transpose(ex_);
for i = 2:iter+M_.maximum_lag
yhat = y_(dr.order_var(k2),i-1);
y_(dr.order_var,i) = dr.ghx*yhat + epsilon(:,i-1);