1function ida = get_aux_variable_id(var)
2
3% Returns the index of an auxiliary variable in M_.aux_vars
4%
5% INPUTS
6% - var   [string, integer]  Variable name or index in M_.endo_names.
7%
8% OUTPUTS
9% - ida   [integer]          Corresponding index in M_.aux_vars.
10
11% Copyright (C) 2018-2019 Dynare Team
12%
13% This file is part of Dynare.
14%
15% Dynare is free software: you can redistribute it and/or modify
16% it under the terms of the GNU General Public License as published by
17% the Free Software Foundation, either version 3 of the License, or
18% (at your option) any later version.
19%
20% Dynare is distributed in the hope that it will be useful,
21% but WITHOUT ANY WARRANTY; without even the implied warranty of
22% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23% GNU General Public License for more details.
24%
25% You should have received a copy of the GNU General Public License
26% along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
27
28global M_
29
30if isempty(var)
31    ida = 0;
32    return
33end
34
35if ischar(var)
36    id = find(strcmp(var, M_.endo_names));
37    if isempty(id)
38        ida = 0;
39        return
40    else
41        var = id;
42    end
43else
44    if ~isint(var) || var>M_.endo_nbr || var<1
45        error('Input must be the name of an endogenous variable or an integer between 1 and %s!', num2str(M_.endo_nbr))
46    end
47end
48
49if var<=M_.orig_endo_nbr
50    % var is not an auxiliary variable.
51    ida = 0;
52else
53    ida = find([M_.aux_vars.endo_index]==var);
54end