function e = SPAimerr(c)
% e = aimerr(c);
%
% Interpret the return codes generated by the aim routines.
%
% The return code c = 2 is used by aim_schur.m but not by aim_eig.m.

% Original author: Gary Anderson
% Original file downloaded from:
% http://www.federalreserve.gov/Pubs/oss/oss4/code.html
% Adapted for Dynare by Dynare Team.
%
% This code is in the public domain and may be used freely.
% However the authors would appreciate acknowledgement of the source by
% citation of any of the following papers:
%
% Anderson, G. and Moore, G.
% "A Linear Algebraic Procedure for Solving Linear Perfect Foresight
% Models."
% Economics Letters, 17, 1985.
%
% Anderson, G.
% "Solving Linear Rational Expectations Models: A Horse Race"
% Computational Economics, 2008, vol. 31, issue 2, pages 95-113
%
% Anderson, G.
% "A Reliable and Computationally Efficient Algorithm for Imposing the
% Saddle Point Property in Dynamic Models"
% Journal of Economic Dynamics and Control, 2010, vol. 34, issue 3,
% pages 472-489

if(c==1)  e='Aim: unique solution.';
elseif(c==2)  e='Aim: roots not correctly computed by real_schur.';
elseif(c==3)  e='Aim: too many big roots.';
elseif(c==35) e='Aim: too many big roots, and q(:,right) is singular.';
elseif(c==4)  e='Aim: too few big roots.';
elseif(c==45) e='Aim: too few big roots, and q(:,right) is singular.';
elseif(c==5)  e='Aim: q(:,right) is singular.';
elseif(c==61) e='Aim: too many exact shiftrights.';
elseif(c==62) e='Aim: too many numeric shiftrights.';
else          e='Aimerr: return code not properly specified';
end

return