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    %% Determine if Array Contains Calendar Duration Values  
% Determine if the output of an arithmetic calculation is a |calendarDuration|
% array.   

% Copyright 2015 The MathWorks, Inc.


%% 
% Add two |calendarDuration| arrays. 
d1 = calyears(1:4);
d2 = caldays(1:4);
d = d1 + d2

%% 
% Determine if the output is a |calendarDuration| array. 
tf = iscalendarduration(d)