diff --git a/matlab/@dynDates/colon.m b/matlab/@dynDates/colon.m
new file mode 100644
index 000000000..30ddd7365
--- /dev/null
+++ b/matlab/@dynDates/colon.m
@@ -0,0 +1,104 @@
+function sp = colon(a,b)
+
+%@info:
+%! @deftypefn {Function File} {@var{sp} =} colon (@var{a},@var{b})
+%! @anchor{@dynDates/colon}
+%! @sp 1
+%! Overloads the colon operator for the Dynare Dates class (@ref{dynDates}). Creates a @ref{dynTime} object.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}, initial date.
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}, last date.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! Dynare Time object instantiated by @ref{dynTime}.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{dynTime}, @ref{@@dynTime/setFreq}, @ref{@@dynTime/setTime}, @ref{@@dynTime/setSize}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if nargin~=2
+ error('dynTime::colon: I need exactly two input arguments!')
+end
+
+if ~( isa(a,'dynDates') && isa(b,'dynDates'))
+ error(['dynTime::colon: Input arguments ' inputname(1) 'and ' inputname(2) ' have to be a dynDates objects!'])
+end
+
+if a.freq~=b.freq
+ error(['dynTime::colon: Input arguments ' inputname(1) 'and ' inputname(2) ' must have common frequency!'])
+end
+
+if a>b
+ error(['dynTime::colon: ' inputname(1) ' must precede ' inputname(2) '!' ])
+end
+
+if a==b% Time range with only one date.
+ sp = dynTime();
+ sp = sp.setFreq(a.freq);
+ sp = sp.setSize(n+1);
+ sp = sp.setTime(1,a.time);
+else
+ n = b-a;
+ sp = dynTime();
+ sp = sp.setFreq(a.freq);
+ sp = sp.setSize(n+1);
+ sp = sp.setTime(1,a.time);
+ for t=2:n+1
+ a = +a;
+ sp = sp.setTime(t,a.time);
+ end
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define two dates
+%$ date_1 = '1950Q2';
+%$ date_2 = '1951Q4';
+%$
+%$ % Define expected results.
+%$ e.freq = 4;
+%$ e.time = [1950 2; 1950 3; 1950 4; 1951 1; 1951 2; 1951 3; 1951 4];
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = d1:d2;
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(d3.time,e.time);
+%$ t(2) = dyn_assert(d3.freq,e.freq);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/dynDates.m b/matlab/@dynDates/dynDates.m
new file mode 100644
index 000000000..ddf42463d
--- /dev/null
+++ b/matlab/@dynDates/dynDates.m
@@ -0,0 +1,142 @@
+function date = dynDates(a)
+
+%@info:
+%! @deftypefn {Function File} {@var{date} =} dynDate (@var{a})
+%! @anchor{dynDates}
+%! @sp 1
+%! Constructor for the Dynare dates class.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Date. For Quaterly, Monthly or Weekly data, a must be a string. For yearly data or if the frequence is not
+%! defined must be an integer. If @var{a} is a dynDates object, then date will be a copy of this object. If
+%! the constructor is called without input argument, it will return an empty dynDates object.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item date
+%! Dynare date object.
+%! @end table
+%! @sp 1
+%! @strong{Properties}
+%! @sp 1
+%! The constructor defines the following properties:
+%! @sp 1
+%! @item freq
+%! Scalar integer, the frequency of the time series. @var{freq} is equal to 1 if data are on a yearly basis or if
+%! frequency is unspecified. @var{freq} is equal to 4 if data are on a quaterly basis. @var{freq} is equal to
+%! 12 if data are on a monthly basis. @var{freq} is equal to 52 if data are on a weekly basis.
+%! @item time
+%! Row vector of integers (1*2) indicating the year and the week, month or quarter of the first observation.
+%! @end table
+%! @sp 1
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{set_time}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+date = struct;
+
+date.freq = NaN;
+date.time = NaN(1,2);
+
+date = class(date,'dynDates');
+
+switch nargin
+ case 0
+ return
+ case 1
+ if ischar(a)% Weekly, Monthly or Quaterly data.
+ quaterly = findstr('Q',a);
+ monthly = findstr('M',a);
+ weekly = findstr('W',a);
+ if ~isempty(quaterly)
+ date.freq = 4;
+ date.time(1) = str2num(a(1:quaterly-1));
+ date.time(2) = str2num(a(quaterly+1:end));
+ end
+ if ~isempty(monthly)
+ date.freq = 12;
+ date.time(1) = str2num(a(1:monthly-1));
+ date.time(2) = str2num(a(monthly+1:end));
+ end
+ if ~isempty(weekly)
+ date.freq = 52;
+ date.time(1) = str2num(a(1:weekly-1));
+ date.time(2) = str2num(a(weekly+1:end));
+ end
+ if isempty(quaterly) && isempty(monthly) && isempty(weekly)
+ error('dynDates:: Using a string as an input argument, I can only handle weekly (W), monthly (M) or quaterly (Q) data!');
+ end
+ elseif isa(a,'dynDates') % If input argument is a dynDates object then do a copy.
+ date = a;
+ else% If b is not a string then yearly data are assumed.
+ date.freq = 1;
+ date.time(1) = a;
+ date.time(2) = 1;
+ end
+ otherwise
+ error('dynDates:: Can''t instantiate the class, wrong calling sequence!')
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = 1950;
+%$ date_2 = '1950Q2';
+%$ date_3 = '1950M10';
+%$ date_4 = '1950W50';
+%$
+%$ % Define expected results.
+%$ e_date_1 = [1950 1];
+%$ e_freq_1 = 1;
+%$ e_date_2 = [1950 2];
+%$ e_freq_2 = 4;
+%$ e_date_3 = [1950 10];
+%$ e_freq_3 = 12;
+%$ e_date_4 = [1950 50];
+%$ e_freq_4 = 52;
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(d1.time,e_date_1);
+%$ t(2) = dyn_assert(d2.time,e_date_2);
+%$ t(3) = dyn_assert(d3.time,e_date_3);
+%$ t(4) = dyn_assert(d4.time,e_date_4);
+%$ t(5) = dyn_assert(d1.freq,e_freq_1);
+%$ t(6) = dyn_assert(d2.freq,e_freq_2);
+%$ t(7) = dyn_assert(d3.freq,e_freq_3);
+%$ t(8) = dyn_assert(d4.freq,e_freq_4);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/eq.m b/matlab/@dynDates/eq.m
new file mode 100644
index 000000000..473338d94
--- /dev/null
+++ b/matlab/@dynDates/eq.m
@@ -0,0 +1,93 @@
+function c = eq(a,b)
+
+%@info:
+%! @deftypefn {Function File} {@var{c} =} eq (@var{a},@var{b})
+%! @anchor{@dynDates/eq}
+%! @sp 1
+%! Overloads the eq (equal) operator for the Dynare dates class (@ref{dynDates}).
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! scalar integer equal to one if a==b, 0 otherwise.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+verbose = 0;
+
+if nargin~=2
+ error('dynDates::eq: I need exactly two input arguments!')
+end
+
+if ~( isa(a,'dynDates') && isa(b,'dynDates'))
+ error(['dynDates::eq: Input arguments ' inputname(1) 'and ' inputname(2) ' have to be a dynDates objects!'])
+end
+
+if verbose && a.freq~=b.freq
+ disp(['dynDates::eq: Input arguments ' inputname(1) 'and ' inputname(2) ' have no common frequencies!'])
+ c = 0;
+end
+
+c = isequal(a.time,b.time);
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = 1950;
+%$ date_2 = '1950Q2';
+%$ date_3 = '1950M10';
+%$ date_4 = '1950W50';
+%$ date_5 = '1950W32';
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$ d5 = dynDates(date_5);
+%$ i1 = (d1==d2);
+%$ i2 = (d2==d2);
+%$ i3 = (d4==d5);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(i1,0);
+%$ t(2) = dyn_assert(i2,1);
+%$ t(3) = dyn_assert(i3,0);
+%$ T = all(t);
+%@eof:1
+
diff --git a/matlab/@dynDates/format.m b/matlab/@dynDates/format.m
new file mode 100644
index 000000000..c17bb620e
--- /dev/null
+++ b/matlab/@dynDates/format.m
@@ -0,0 +1,91 @@
+function p = format(date)
+
+%@info:
+%! @deftypefn {Function File} {@var{p} =} format (@var{date})
+%! @anchor{@dynDates/format}
+%! @sp 1
+%! Produces a formatted date from a Dynare date object instantiated by @ref{dynDates}.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item date
+%! Dynare date object, instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item p
+%! A string containing the formatted date (for instance, '2000', '2000Q3', '2000M9' or '2000W43').
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+
+if nargin~=1
+ error('dynDates::format: I need exactly one input argument!')
+end
+
+if ~isa(date,'dynDates')
+ error(['dynDates::format: Input argument ' inputname(1) ' has to be a dynDates object!'])
+end
+
+switch date.freq
+ case 1
+ p = num2str(date.time(1));
+ case 4
+ p = [num2str(date.time(1)) 'Q' num2str(date.time(2))];
+ case 12
+ p = [num2str(date.time(1)) 'M' num2str(date.time(2))];
+ case 52
+ p = [num2str(date.time(1)) 'W' num2str(date.time(2))];
+ otherwise
+ error('dynDates::format: Unkonwn frequency!')
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = 1950;
+%$ date_2 = '1950Q2';
+%$ date_3 = '1950M10';
+%$ date_4 = '1950W50';
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1); DATE_1 = format(d1);
+%$ d2 = dynDates(date_2); DATE_2 = format(d2);
+%$ d3 = dynDates(date_3); DATE_3 = format(d3);
+%$ d4 = dynDates(date_4); DATE_4 = format(d4);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(num2str(date_1),DATE_1);
+%$ t(2) = dyn_assert(date_2,DATE_2);
+%$ t(3) = dyn_assert(date_3,DATE_3);
+%$ t(4) = dyn_assert(date_4,DATE_4);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/ge.m b/matlab/@dynDates/ge.m
new file mode 100644
index 000000000..484198837
--- /dev/null
+++ b/matlab/@dynDates/ge.m
@@ -0,0 +1,86 @@
+function c = ge(a,b)
+
+%@info:
+%! @deftypefn {Function File} {@var{c} =} ge (@var{a},@var{b})
+%! @anchor{@dynDates/ge}
+%! @sp 1
+%! Overloads the ge (greater or equal) operator for the Dynare dates class (@ref{dynDates}).
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! scalar integer equal to one if a>=b, 0 otherwise.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{@@dynDates/gt}, @ref{@@dynDates/eq}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if a>b
+ c=1;
+else
+ if a==b
+ c=1;
+ else
+ c=0;
+ end
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = '1950Q3';
+%$ date_2 = '1950Q3';
+%$ date_3 = '1950Q1';
+%$ date_4 = '1949Q2';
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$ i1 = (d1>=d2);
+%$ i2 = (d3>=d4);
+%$ i3 = (d4>=d2);
+%$ i4 = (d1>=d4);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(i1,1);
+%$ t(2) = dyn_assert(i2,1);
+%$ t(3) = dyn_assert(i3,0);
+%$ t(4) = dyn_assert(i4,1);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/gt.m b/matlab/@dynDates/gt.m
new file mode 100644
index 000000000..68e4782d4
--- /dev/null
+++ b/matlab/@dynDates/gt.m
@@ -0,0 +1,103 @@
+function c = gt(a,b)
+
+%@info:
+%! @deftypefn {Function File} {@var{c} =} gt (@var{a},@var{b})
+%! @anchor{@dynDates/gt}
+%! @sp 1
+%! Overloads the gt (greater than) operator for the Dynare dates class (@ref{dynDates}).
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! scalar integer equal to one if a>b, 0 otherwise.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+verbose = 0;
+
+if nargin~=2
+ error('dynDates::eq: I need exactly two input arguments!')
+end
+
+if ~( isa(a,'dynDates') && isa(b,'dynDates'))
+ error(['dynDates::eq: Input arguments ' inputname(1) 'and ' inputname(2) ' have to be a dynDates objects!'])
+end
+
+if verbose && a.freq~=b.freq
+ error(['dynDates::eq: Input arguments ' inputname(1) 'and ' inputname(2) ' have no common frequencies!'])
+end
+
+if a.time(1)>b.time(1)
+ c = 1;
+elseif isequal(a.time(1),b.time(1))
+ if a.time(2)>b.time(2)
+ c = 1;
+ else
+ c = 0;
+ end
+else
+ c = 0;
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = 1950;
+%$ date_2 = '1950Q2';
+%$ date_3 = '1950Q3';
+%$ date_4 = '1950Q1';
+%$ date_5 = '1949Q2';
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$ d5 = dynDates(date_5);
+%$ i1 = (d2>d3);
+%$ i2 = (d3>d4);
+%$ i3 = (d4>d2);
+%$ i4 = (d5>d4);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(i1,0);
+%$ t(2) = dyn_assert(i2,1);
+%$ t(3) = dyn_assert(i3,0);
+%$ t(4) = dyn_assert(i4,0);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/le.m b/matlab/@dynDates/le.m
new file mode 100644
index 000000000..70e2260e6
--- /dev/null
+++ b/matlab/@dynDates/le.m
@@ -0,0 +1,86 @@
+function c = le(a,b)
+
+%@info:
+%! @deftypefn {Function File} {@var{c} =} le (@var{a},@var{b})
+%! @anchor{@dynDates/le}
+%! @sp 1
+%! Overloads the le (less or equal) operator for the Dynare dates class (@ref{dynDates}).
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! scalar integer equal to one if a<=b, 0 otherwise.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{@@dynDates/lt}, @ref{@@dynDates/eq}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if a.
+
+verbose = 0;
+
+if nargin~=2
+ error('dynDates::eq: I need exactly two input arguments!')
+end
+
+if ~( isa(a,'dynDates') && isa(b,'dynDates'))
+ error(['dynDates::eq: Input arguments ' inputname(1) 'and ' inputname(2) ' have to be a dynDates objects!'])
+end
+
+if verbose && a.freq~=b.freq
+ error(['dynDates::eq: Input arguments ' inputname(1) 'and ' inputname(2) ' have no common frequencies!'])
+end
+
+if a.time(1)@var{B}).
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! Integer scalar, the number of years, quarters, months or weeks between @var{a} and @var{B}.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{@@dynDates/eq},@ref{@@dynDates/lt}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if ~( isa(a,'dynDates') && isa(b,'dynDates') )
+ error(['dynDates::minus: Input arguments ' inputname(1) ' and ' inputname(2) ' must be dynDates objects!'])
+end
+
+if a.freq~=b.freq
+ error(['dynDates::minus: ' inputname(1) ' and ' inputname(2) ' must have common frequency!'])
+end
+
+if a.
+
+verbose = 0;
+
+if nargin~=2
+ error('dynDates::ne: I need exactly two input arguments!')
+end
+
+if ~( isa(a,'dynDates') && isa(b,'dynDates'))
+ error(['dynDates::ne: Input arguments ' inputname(1) 'and ' inputname(2) ' have to be a dynDates objects!'])
+end
+
+if verbose && a.freq~=b.freq
+ disp(['dynDates::ne: Input arguments ' inputname(1) 'and ' inputname(2) ' have no common frequencies!'])
+ c = 1;
+end
+
+c = ~isequal(a.time,b.time);
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = 1950;
+%$ date_2 = '1950Q2';
+%$ date_3 = '1950M10';
+%$ date_4 = '1950W50';
+%$ date_5 = '1950W32';
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$ d5 = dynDates(date_5);
+%$ i1 = (d1~=d2);
+%$ i2 = (d2~=d2);
+%$ i3 = (d4~=d5);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(i1,1);
+%$ t(2) = dyn_assert(i2,0);
+%$ t(3) = dyn_assert(i3,1);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/plus.m b/matlab/@dynDates/plus.m
new file mode 100644
index 000000000..f02671c2b
--- /dev/null
+++ b/matlab/@dynDates/plus.m
@@ -0,0 +1,110 @@
+function c = plus(a,b)
+
+%@info:
+%! @deftypefn {Function File} {@var{c} =} plus (@var{a},@var{b})
+%! @anchor{@dynDates/plus}
+%! @sp 1
+%! Overloads the plus (addition) operator for the Dynare dates class (@ref{dynDates}). Given an initial date @var{a},
+%! computes a new date @var{c} by adding the number of periods @var{b}.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item b
+%! Positive scalar integer, the number of periods
+%! @end table
+%! @sp 2
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item c
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{@@dynDates/eq}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if ~isa(a,'dynDates')
+ error(['dynDates::plus: Input argument ' inputname(1) ' must be a dynDates object!'])
+end
+
+if b<0
+ error(['dynDates::plus: Input argument ' inputname(2) ' must be a positive integer'])
+end
+
+
+if b==0
+ c = a;
+ return
+end
+
+switch a.freq
+ case 1
+ c = a.time(1)-b.time(1);
+ case {4,12,52}
+ c = a.time(2)-b.time(2) + (a.time(1)-b.time(1))*a.freq;
+ otherwise
+ error('dynDates::minus: Unknown frequency!')
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_0_1 = 1950;
+%$ date_0_2 = 1950;
+%$ date_0_3 = 1940;
+%$ date_1_1 = '1950Q4';
+%$ date_1_2 = '1950Q1';
+%$ date_1_3 = '1940Q3';
+%$ date_2_1 = '2000M3';
+%$ date_2_2 = '1998M8';
+%$
+%$ % Call the tested routine.
+%$ d_0_1 = dynDates(date_0_1);
+%$ d_0_2 = dynDates(date_0_2);
+%$ d_0_3 = dynDates(date_0_3);
+%$ d_1_1 = dynDates(date_1_1);
+%$ d_1_2 = dynDates(date_1_2);
+%$ d_1_3 = dynDates(date_1_3);
+%$ d_2_1 = dynDates(date_2_1);
+%$ d_2_2 = dynDates(date_2_2);
+%$ e1 = d_0_1-d_0_2;
+%$ e2 = d_0_1-d_0_3;
+%$ e3 = d_1_1-d_1_2;
+%$ e4 = d_1_1-d_1_3;
+%$ e5 = d_2_1-d_2_2;
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(e1,0);
+%$ t(2) = dyn_assert(e2,10);
+%$ t(3) = dyn_assert(e3,3);
+%$ t(4) = dyn_assert(e4,41);
+%$ t(4) = dyn_assert(e5,19);
+%$ T = all(t);
+%@eof:1
\ No newline at end of file
diff --git a/matlab/@dynDates/subsref.m b/matlab/@dynDates/subsref.m
new file mode 100644
index 000000000..6d4a93b2e
--- /dev/null
+++ b/matlab/@dynDates/subsref.m
@@ -0,0 +1,53 @@
+function B = subsref(A,S)
+
+%@info:
+%! @deftypefn {Function File} {@var{us} =} subsref (@var{ts},S)
+%! @anchor{@dynDates/subsref}
+%! @sp 1
+%! Overloads the subsref method for the Dynare dates class (@ref{dynDates}).
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item A
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @item S
+%! Matlab's structure array S with two fields, type and subs. The type field is string containing '()', '@{@}', or '.', where '()' specifies
+%! integer subscripts, '@{@}' specifies cell array subscripts, and '.' specifies subscripted structure fields. The subs field is a cell array
+%! or a string containing the actual subscripts (see matlab's documentation).
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item B
+%! A matlab object (public member of the @ref{dynDates} object).
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @sp2
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+B = builtin('subsref', A, S);
\ No newline at end of file
diff --git a/matlab/@dynDates/uminus.m b/matlab/@dynDates/uminus.m
new file mode 100644
index 000000000..97a4f7f98
--- /dev/null
+++ b/matlab/@dynDates/uminus.m
@@ -0,0 +1,121 @@
+function b = uminus(a)
+
+%@info:
+%! @deftypefn {Function File} {@var{b} =} uminus (@var{a})
+%! @anchor{@dynDates/uplus}
+%! @sp 1
+%! Overloads the uminus (unary soustraction) operator for the Dynare dates class (@ref{dynDates}). Decrement the date by one year, quarter,
+%! month or week depending on the frequency.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{dynDates}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if ~isa(a,'dynDates')
+ error(['dynDates::uminus: Input argument ' inputname(1) ' must be a dynDates object.'])
+end
+
+b = dynDates(a);
+
+switch b.freq
+ case 1
+ b.time(1) = b.time(1)-1;
+ case 4
+ if b.time(2)==1
+ b.time(1) = b.time(1)-1;
+ b.time(2) = 4;
+ else
+ b.time(2) = b.time(2)-1;
+ end
+ case 12
+ if b.time(2)==1
+ b.time(1) = b.time(1)-1;
+ b.time(2) = 12;
+ else
+ b.time(2) = b.time(2)-1;
+ end
+ case 52
+ if b.time(2)==1
+ b.time(1) = b.time(1)-1;
+ b.time(2) = 52;
+ else
+ b.time(2) = b.time(2)-1;
+ end
+ otherwise
+ error('dynDates::minus: Unknown frequency!')
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = '1950Q1';
+%$ date_2 = '1950Q4';
+%$ date_3 = '1950M1';
+%$ date_4 = '1950M12';
+%$ date_5 = '1950W1';
+%$ date_6 = '1950W52';
+%$ date_7 = 2000;
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$ d5 = dynDates(date_5);
+%$ d6 = dynDates(date_6);
+%$ d7 = dynDates(date_7);
+%$ e1 = -d1;
+%$ e2 = -d2;
+%$ e3 = -d3;
+%$ e4 = -d4;
+%$ e5 = -d5;
+%$ e6 = -d6;
+%$ e7 = -d7;
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(e1.time,[1949 4]);
+%$ t(2) = dyn_assert(e2.time,[1950 3]);
+%$ t(3) = dyn_assert(e3.time,[1949 12]);
+%$ t(4) = dyn_assert(e4.time,[1950 11]);
+%$ t(5) = dyn_assert(e5.time,[1949 52]);
+%$ t(6) = dyn_assert(e6.time,[1950 51]);
+%$ t(7) = dyn_assert(e7.time,[1999 1]);
+%$ T = all(t);
+%@eof:1
diff --git a/matlab/@dynDates/uplus.m b/matlab/@dynDates/uplus.m
new file mode 100644
index 000000000..e4642cdb7
--- /dev/null
+++ b/matlab/@dynDates/uplus.m
@@ -0,0 +1,121 @@
+function b = uplus(a)
+
+%@info:
+%! @deftypefn {Function File} {@var{b} =} uplus (@var{a})
+%! @anchor{@dynDates/uplus}
+%! @sp 1
+%! Overloads the uplus (unary addition) operator for the Dynare dates class (@ref{dynDates}). Increment the date by one year, quarter,
+%! month or week depending on the frequency.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item b
+%! Dynare date object instantiated by @ref{dynDates}.
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @ref{dynDates}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2011 Dynare Team
+% stephane DOT adjemian AT univ DASH lemans DOT fr
+%
+% This file is part of Dynare.
+%
+% Dynare is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Dynare is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with Dynare. If not, see .
+
+if ~isa(a,'dynDates')
+ error(['dynDates::uplus: Input argument ' inputname(1) ' must be a dynDates object.'])
+end
+
+b = dynDates(a);
+
+switch b.freq
+ case 1
+ b.time(1) = b.time(1)+1;
+ case 4
+ if b.time(2)==4% Happy new year!
+ b.time(1) = b.time(1)+1;
+ b.time(2) = 1;
+ else
+ b.time(2) = b.time(2)+1;
+ end
+ case 12
+ if b.time(2)==12% Happy new year!
+ b.time(1) = b.time(1)+1;
+ b.time(2) = 1;
+ else
+ b.time(2) = b.time(2)+1;
+ end
+ case 52
+ if b.time(2)==52% Happy new year!
+ b.time(1) = b.time(1)+1;
+ b.time(2) = 1;
+ else
+ b.time(2) = b.time(2)+1;
+ end
+ otherwise
+ error('dynDates::uplus: Unknown frequency!')
+end
+
+%@test:1
+%$ addpath ../matlab
+%$
+%$ % Define some dates
+%$ date_1 = '1950Q3';
+%$ date_2 = '1950Q4';
+%$ date_3 = '1950M3';
+%$ date_4 = '1950M12';
+%$ date_5 = '1950W3';
+%$ date_6 = '1950W52';
+%$ date_7 = 2000;
+%$
+%$ % Call the tested routine.
+%$ d1 = dynDates(date_1);
+%$ d2 = dynDates(date_2);
+%$ d3 = dynDates(date_3);
+%$ d4 = dynDates(date_4);
+%$ d5 = dynDates(date_5);
+%$ d6 = dynDates(date_6);
+%$ d7 = dynDates(date_7);
+%$ e1 = +d1;
+%$ e2 = +d2;
+%$ e3 = +d3;
+%$ e4 = +d4;
+%$ e5 = +d5;
+%$ e6 = +d6;
+%$ e7 = +d7;
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(e1.time,[1950 4]);
+%$ t(2) = dyn_assert(e2.time,[1951 1]);
+%$ t(3) = dyn_assert(e3.time,[1950 4]);
+%$ t(4) = dyn_assert(e4.time,[1951 1]);
+%$ t(5) = dyn_assert(e5.time,[1950 4]);
+%$ t(6) = dyn_assert(e6.time,[1951 1]);
+%$ t(7) = dyn_assert(e7.time,[2001 1]);
+%$ T = all(t);
+%@eof:1
\ No newline at end of file