add comments about rounding

src/@report_data/printData.m

@@ -37,6 +37,7 @@ precision  = 10^precision;
 data = setDataToZeroFromZeroTol(o, data);
 for i=1:size(data,1)
     fprintf(fid, '&');
+    % Use round half away from zero rounding
     output = round(data(i)*precision)/precision;
     if isnan(output)
         fprintf(fid, '%s', o.tableNaNSymb);

src/@report_data/writeDataForTable.m

@@ -99,6 +99,7 @@ for i = 1:nrows
             if val < o.zeroTol && val > -o.zeroTol
                 val = 0;
             end
+            % Use round half away from zero rounding
             val = round(val*rounding)/rounding;
             if isnan(val)
                 val = o.tableNaNSymb;

src/@report_series/printSeries.m

@@ -15,7 +15,7 @@ function o = printSeries(o, fid, dser, dates, precision)
 % SPECIAL REQUIREMENTS
 %   none
 
-% Copyright (C) 2014-2016 Dynare Team
+% Copyright (C) 2014-2019 Dynare Team
 %
 % This file is part of Dynare.
 %
@@ -47,7 +47,7 @@ for i=1:size(data,1)
         end
         fprintf(fid, '[');
     end
-
+    % Use round half away from zero rounding
     output = round(data(i)*precision)/precision;
     if isnan(output)
         fprintf(fid, '%s', o.tableNaNSymb);