154 lines
4.0 KiB
Matlab
154 lines
4.0 KiB
Matlab
function C = minus(A,B) % --*-- Unitary tests --*--
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% Overloads the minus operator (-). If A and B are dates objects, the method returns the number of periods between A and B (so that A+C=B). If
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% one of the inputs is an integer or a vector of integers, the method shifts the dates object by X (the interger input) periods backward.
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% Copyright (C) 2013 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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if isa(B,'dates')
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if ~isequal(A.freq,B.freq)
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error(['dates::minus: Input arguments ''' inputname(1) ''' and ''' inputname(2) ''' must have common frequencies!'])
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end
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if isempty(A) || isempty(B)
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error(['dates::minus: Input arguments ''' inputname(1) ''' and ''' inputname(2) ''' must not be empty!'])
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end
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if ~isequal(length(A),length(B))
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if length(A)==1
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A.time = repmat(A.time,B.ndat,1);
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A.ndat = B.ndat;
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elseif length(B)==1
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B.time = repmat(B.time,A.ndat,1);
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B.ndat = A.ndat;
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else
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error(['dates::minus: Input arguments ''' inputname(1) ''' and ''' inputname(2) ''' lengths are not consistent!'])
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end
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end
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C = zeros(length(A),1);
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id = find(~(A==B));
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if isempty(id)
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return
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end
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C(id) = A.time(id,2)-B.time(id,2) + (A.time(id,1)-B.time(id,1))*A.freq;
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elseif (isvector(B) && isequal(length(B),A.ndat) && all(isint(B))) || isscalar(B) && isint(B) || isequal(length(A),1) && isvector(B) && all(isint(B))
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C = dates();
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C.freq = A.freq;
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C.time = add_periods_to_array_of_dates(A.time, A.freq, -B);
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C.ndat = rows(C.time);
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else
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error('dates::plus: I don''t understand what you want to do! Check the manual.')
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end
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%@test:1
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%$ % Define some dates objects
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%$ d1 = dates('1950Q1','1950Q2','1960Q1');
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%$ d2 = dates('1950Q3','1950Q4','1960Q1');
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%$ d3 = dates('2000Q1');
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%$ d4 = dates('2002Q2');
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%$ % Call the tested routine.
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%$ try
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%$ e1 = d2-d1;
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%$ e2 = d4-d3;
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%$ t(1) = 1;
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%$ catch
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%$ t(1) = 0;
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%$ end
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%$
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%$ if t(1)
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%$ t(2) = dyn_assert(e1,[2; 2; 0]);
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%$ t(3) = dyn_assert(e2,9);
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%$ end
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%$ T = all(t);
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%@eof:1
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%@test:2
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%$ % Define some dates objects
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%$ d1 = dates('1950Y','1951Y','1953Y');
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%$ d2 = dates('1951Y','1952Y','1953Y');
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%$ d3 = dates('2000Y');
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%$ d4 = dates('1999Y');
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%$ % Call the tested routine.
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%$ try
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%$ e1 = d2-d1;
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%$ e2 = d4-d3;
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%$ t(1) = 1;
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%$ catch
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%$ t(1) = 0;
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%$ end
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%$
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%$ if t(1)
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%$ t(2) = dyn_assert(e1,[1; 1; 0]);
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%$ t(3) = dyn_assert(e2,-1);
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%$ end
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%$ T = all(t);
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%@eof:2
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%@test:3
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%$ % Define some dates objects
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%$ d1 = dates('2000Y');
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%$ d2 = dates('1999Y');
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%$ % Call the tested routine.
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%$ try
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%$ e1 = d1-1;
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%$ e2 = d2-(-1);
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%$ t(1) = 1;
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%$ catch
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%$ t(1) = 0;
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%$ end
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%$
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%$ if t(1)
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%$ t(2) = dyn_assert(isequal(e1,d2),1);
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%$ t(3) = dyn_assert(isequal(e2,d1),1);
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%$ end
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%$ T = all(t);
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%@eof:3
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%@test:4
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%$ % Define some dates objects
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%$ d1 = dates('2000Q1');
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%$ e1 = dates('1999Q4','1999Q3','1999Q2','1999Q1','1998Q4');
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%$ % Call the tested routine.
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%$ try
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%$ f1 = d1-transpose(1:5);
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%$ t(1) = 1;
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%$ catch
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%$ t(1) = 0;
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%$ end
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%$
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%$ if t(1)
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%$ t(2) = dyn_assert(isequal(e1,f1),1);
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%$ end
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%$ T = all(t);
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%@eof:4
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%@test:5
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%$ % Define some dates objects
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%$ d1 = dates('1999Q4','1999Q3','1999Q2','1999Q1','1998Q4');
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%$ e1 = dates('2000Q1')*5;
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%$ % Call the tested routine.
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%$ try
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%$ f1 = d1-(-transpose(1:5));
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%$ t(1) = 1;
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%$ catch
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%$ t(1) = 0;
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%$ end
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%$
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%$ if t(1)
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%$ t(2) = dyn_assert(isequal(e1,f1),1);
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%$ end
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%$ T = all(t);
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%@eof:5 |