From c3e06c70bcd0e737891d2f9da3dc6f28ecafe72d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Adjemian=20=28Charybdis=29?=
 <stephane.adjemian@univ-lemans.fr>
Date: Thu, 10 Oct 2013 18:28:26 +0200
Subject: [PATCH] Added dynDates::lt method. Overloads < opterator.

---
 matlab/@dynDates/lt.m | 84 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 matlab/@dynDates/lt.m

diff --git a/matlab/@dynDates/lt.m b/matlab/@dynDates/lt.m
new file mode 100644
index 000000000..81c79cb50
--- /dev/null
+++ b/matlab/@dynDates/lt.m
@@ -0,0 +1,84 @@
+function C = lt(A,B)
+
+% Overloads the < operator for dynDates objects.
+%
+% INPUTS 
+%  o A    dynDates object with n or 1 elements.
+%  o B    dynDates object with n or 1 elements.
+%
+% OUTPUTS 
+%  o C    column vector of max(n,1) elements (zeros or ones).
+
+% Copyright (C) 2013 Dynare Team
+%
+% 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 <http://www.gnu.org/licenses/>.
+
+if ~isequal(nargin,2)
+    error('dynDates::lt: I need exactly two input arguments!')
+end
+
+if ~isa(A,'dynDates') || ~isa(B,'dynDates')
+    error(['dynDates::lt: Input arguments ''' inputname(1) ''' and ''' inputname(2) ''' have to be a dynDates objects!'])
+end
+
+if ~isequal(A.freq,B.freq)
+    C = 0;
+    return
+end
+
+if isequal(A.ndat, B.ndat)
+    C = NaN(A.ndat,1);
+    for i=1:A.ndat
+        C(i) = compare_vectors(@lt, A.time(i,:), B.time(i,:));
+    end
+else
+    if isequal(A.ndat,1) && isequal(B.ndat,1)
+        C = compare_vectors(@lt, A.time, B.time);
+    elseif isequal(A.ndat,1)
+        C = NaN(B.ndat,1);
+        for i=1:B.ndat
+            C(i) = compare_vectors(@lt, A.time, B.time(i,:));
+        end
+    elseif isequal(B.ndat,1)
+        C = NaN(A.ndat,1);
+        for i=1:A.ndat
+            C(i) = compare_vectors(@lt, A.time(i,:), B.time);
+        end
+    else
+        C = 0;
+    end
+end
+
+%@test:1
+%$ % Define some dates
+%$ B1 = '1945Q1';
+%$ B2 = '1945Q2';
+%$ B3 = '1945Q3';
+%$ B4 = '1945Q4';
+%$ B5 = '1950Q1';
+%$
+%$ % Create dynDates objects.
+%$ dd = dynDates(B1,B2,B3,B4);
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(dynDates(B1)<dynDates(B2),1);
+%$ t(2) = dyn_assert(dynDates(B2)<dynDates(B1),0);
+%$ t(3) = dyn_assert(dynDates(B2)<dynDates(B1),0);
+%$ t(4) = dyn_assert(dd<dynDates(B5),ones(4,1));
+%$ t(5) = dyn_assert(dynDates(B5)<dd,zeros(4,1));
+%$ t(6) = dyn_assert(dynDates(B1)<dd,[0; ones(3,1)]);
+%$ T = all(t);
+%@eof:1