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changeset 29879:ca30a6c1acc3

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num2str.m: Don't convert integer input to floating point. * scripts/general/num2str.m: Don't print integer input with a format string for floating point numbers. Add test with an integer that can't be represented in double precision.
author Markus Mützel <markus.muetzel@gmx.de>
date Wed, 14 Jul 2021 16:14:49 +0200
parents 2cc14e275a51
children dbc191149841
files scripts/general/num2str.m
diffstat 1 files changed, 6 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/scripts/general/num2str.m	Wed Jul 14 11:47:25 2021 +0200
+++ b/scripts/general/num2str.m	Wed Jul 14 16:14:49 2021 +0200
@@ -119,7 +119,11 @@
           if (any (! valid))
             ndgt = max (ndgt, 5);     # Allow space for Inf/NaN
           endif
-          fmt = sprintf ("%%%d.0f", ndgt);
+          if (isfloat (x))
+            fmt = sprintf ("%%%d.0f", ndgt);
+          else
+            fmt = sprintf ("%%%dd", ndgt);
+          endif
         endif
       else
         ## Logical input
@@ -220,6 +224,7 @@
 %!assert (num2str (NA), "NA")
 %!assert (num2str (complex (NA, 1)), "NA+1i")
 %!assert (num2str (complex (1, NA)), "1+NAi")
+%!assert (num2str (int64 (-flintmax ()) - 1), "-9007199254740993")
 
 ## ND-arrays are concatenated in columns
 %!shared m, x