167 lines
6.8 KiB
Matlab
167 lines
6.8 KiB
Matlab
function steady_()
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% function steady_()
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% Computes the steady state
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%
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% INPUTS
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% none
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%
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% OUTPUTS
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% none
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%
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% SPECIAL REQUIREMENTS
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% none
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% Copyright (C) 2001-2009 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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global M_ oo_ it_ options_
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if options_.bytecode && ...
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(options_.solve_algo < 0 || options_.solve_algo > 8)
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error('STEADY: for the moment, you must use solve_algo=1, 2, 3, 4, 5, 6, 7, 8 with bytecode option')
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end
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if ~options_.bytecode && options_.solve_algo == 8
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error('STEADY: you can''t yet use solve_algo=8 without bytecode option')
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end
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if options_.steadystate_flag
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[ys,check] = feval([M_.fname '_steadystate'],...
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oo_.steady_state,...
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[oo_.exo_steady_state; ...
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oo_.exo_det_steady_state]);
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if size(ys,1) < M_.endo_nbr
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if length(M_.aux_vars) > 0
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ys = add_auxiliary_variables_to_steadystate(ys,M_.aux_vars,...
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M_.fname,...
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oo_.exo_steady_state,...
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oo_.exo_det_steady_state,...
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M_.params);
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else
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error([M_.fname '_steadystate.m doesn''t match the model']);
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end
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end
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oo_.steady_state = ys;
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% Check if the steady state obtained from the _steadystate file is a steady state.
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check1 = 0;
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if isempty(options_.unit_root_vars)
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if options_.block && ~options_.bytecode
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check2 = zeros(size(M_.blocksMFS,1),1);
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for b = 1:size(M_.blocksMFS,1)
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n = size(M_.blocksMFS{b}, 1);
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ss = oo_.steady_state;
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if n
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check2(b) = max(abs(feval([M_.fname '_static'], b, ss, ...
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[oo_.exo_steady_state; oo_.exo_det_steady_state], M_.params))) > options_.dynatol;
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else
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[r, g1, ssss] = feval([M_.fname '_static'], b, ss, ...
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[oo_.exo_steady_state; oo_.exo_det_steady_state], M_.params);
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end
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end
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check1 = any(check2);
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idx = find(abs(ssss-oo_.steady_state)>10*options_.dynatol);
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if ~isempty(idx)
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check1 = 1;
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end
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elseif options_.block && options_.bytecode
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[check1, residuals] = bytecode('evaluate','static',oo_.steady_state,...
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[oo_.exo_steady_state; ...
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oo_.exo_det_steady_state], M_.params, 1);
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mexErrCheck('bytecode', check1);
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else
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check1 = 0;
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check1 = max(abs(feval([M_.fname '_static'],...
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oo_.steady_state,...
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[oo_.exo_steady_state; ...
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oo_.exo_det_steady_state], M_.params))) > options_.dynatol ;
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end
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end
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if check1
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resid;
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error(['The steadystate values returned by ' M_.fname ...
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'_steadystate.m don''t solve the static model!' ])
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end
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if ~isempty(options_.steadystate_partial)
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ssvar = options_.steadystate_partial.ssvar;
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nov = length(ssvar);
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indv = zeros(nov,1);
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for i = 1:nov
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indv(i) = strmatch(ssvar(i),M_.endo_names,'exact');
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end
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[oo_.steady_state,check] = dynare_solve('restricted_steadystate',...
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oo_.steady_state(indv),...
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options_.jacobian_flag, ...
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[oo_.exo_steady_state;oo_.exo_det_steady_state],indv);
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end
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elseif options_.block && ~options_.bytecode
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for b = 1:size(M_.blocksMFS,1)
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n = size(M_.blocksMFS{b}, 1);
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ss = oo_.steady_state;
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if n ~= 0
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[y, check] = dynare_solve('block_mfs_steadystate', ...
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ss(M_.blocksMFS{b}), ...
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options_.jacobian_flag, b);
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if check ~= 0
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error(['STEADY: convergence problems in block ' int2str(b)])
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end
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ss(M_.blocksMFS{b}) = y;
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end
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[r, g1, oo_.steady_state] = feval([M_.fname '_static'], b, ss, ...
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[oo_.exo_steady_state; ...
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oo_.exo_det_steady_state], M_.params);
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end
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elseif options_.bytecode
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if options_.solve_algo > 4
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[check, oo_.steady_state] = bytecode('static');
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mexErrCheck('bytecode', check);
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elseif options_.block
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for b = 1:size(M_.blocksMFS,1)
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n = size(M_.blocksMFS{b}, 1);
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ss = oo_.steady_state;
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if n ~= 0
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[y, check] = dynare_solve('block_bytecode_mfs_steadystate', ...
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ss(M_.blocksMFS{b}), ...
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options_.jacobian_flag, b);
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if check ~= 0
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error(['STEADY: convergence problems in block ' int2str(b)])
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end
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oo_.steady_state(M_.blocksMFS{b}) = y;
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else
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[check, r, g1, oo_.steady_state] = feval('bytecode', oo_.steady_state, ...
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[oo_.exo_steady_state; ...
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oo_.exo_det_steady_state], M_.params, 1, options_.solve_algo, 'static', 'evaluate', ['block = ' int2str(b)]);
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end;
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end
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else
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[y, check] = dynare_solve('bytecode_steadystate', ...
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oo_.steady_state, ...
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options_.jacobian_flag);
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if check ~= 0
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error('STEADY: convergence problems')
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end
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oo_.steady_state = y;
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end
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else
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[oo_.steady_state,check] = dynare_solve([M_.fname '_static'],...
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oo_.steady_state,...
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options_.jacobian_flag, ...
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[oo_.exo_steady_state; ...
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oo_.exo_det_steady_state], M_.params);
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end
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if check ~= 0
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error('STEADY: convergence problems')
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end
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