63 lines
1.4 KiB
Matlab
63 lines
1.4 KiB
Matlab
function d1 = bksupk(ny,fid,jcf,icc1)
|
|
|
|
% function d1 = bksupk(ny,fid,jcf,icc1)
|
|
% Solves deterministic models recursively by backsubstitution for k leads/lags
|
|
%
|
|
% INPUTS
|
|
% ny: number of endogenous variables
|
|
% fid: saves the elements above the diagonal
|
|
% jcf: variables index forward
|
|
% icc1: jacobian column forward
|
|
%
|
|
% OUTPUTS
|
|
% d1: vector of backsubstitution results
|
|
%
|
|
% SPECIAL REQUIREMENTS
|
|
% none
|
|
%
|
|
% part of DYNARE, copyright Dynare Team (2003-2007)
|
|
% Gnu Public License.
|
|
|
|
global M_ options_
|
|
|
|
icf = [1:jcf-1] ;
|
|
ir = [(options_.periods-1)*ny+1:ny*options_.periods] ;
|
|
irf = icc1+(options_.periods-1)*ny ;
|
|
d1 = zeros(options_.periods*ny,1) ;
|
|
|
|
ofs = (((options_.periods-1)*ny+1)-1)*jcf*8 ;
|
|
junk = fseek(fid,ofs,-1) ;
|
|
c = fread(fid,[jcf,ny],'float64')';
|
|
|
|
d1(ir) = c(:,jcf) ;
|
|
ir = ir-ny ;
|
|
|
|
i = 2 ;
|
|
|
|
while i <= M_.maximum_lead | i <= options_.periods
|
|
irf1 = selif(irf,irf<=options_.periods*ny) ;
|
|
|
|
ofs = (((options_.periods-i)*ny+1)-1)*jcf*8 ;
|
|
junk = fseek(fid,ofs,-1) ;
|
|
c = fread(fid,[jcf,ny],'float64')' ;
|
|
|
|
d1(ir) = c(:,jcf) - c(:,1:size(irf1,1))*d1(irf1) ;
|
|
ir = ir - ny ;
|
|
irf = irf - ny ;
|
|
i = i + 1 ;
|
|
end
|
|
|
|
while i <= options_.periods
|
|
|
|
ofs = (((options_.periods-i)*ny+1)-1)*jcf*8 ;
|
|
junk = fseek(fid,ofs,-1) ;
|
|
c = fread(fid,[jcf,ny],'float64')' ;
|
|
|
|
d1(ir) = c(:,jcf)-c(:,icf)*d1(irf) ;
|
|
ir = ir-ny ;
|
|
irf = irf-ny ;
|
|
i = i+1;
|
|
end
|
|
|
|
return ;
|