49 lines
1.3 KiB
Matlab
49 lines
1.3 KiB
Matlab
function [l,c,d] = isint(a)
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% This function tests if the input argument is an integer.
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%
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% INPUT
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% a [double] m*n matrix.
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%
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% OUTPUT
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% b [integer] m*n matrix of 0 and 1. b(i,j)=1 if a(i,j) is an integer.
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% c [integer] p*1 vector of indices pointing to the integer elements of a.
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% d [integer] q*1 vector of indices pointing to the non integer elements of a.
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%
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% SPECIAL REQUIREMENTS
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% None.
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%
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% NOTES
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% p+q is equal to the product of m by n.
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% Copyright © 2009-2017 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 <https://www.gnu.org/licenses/>.
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if ~isnumeric(a)
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l = false;
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if nargout>1
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c = [];
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d = [];
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end
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return
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end
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l = abs(fix(a)-a)<1e-15;
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if nargout>1
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c = find(l==true);
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d = find(l==false);
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end |