1 files changed, 12 insertions, 1 deletions
diff --git a/contrib/perl5/t/op/arith.t b/contrib/perl5/t/op/arith.t
index 43af807..fe2f0f4 100755
--- a/contrib/perl5/t/op/arith.t
+++ b/contrib/perl5/t/op/arith.t
@@ -1,6 +1,6 @@
 #!./perl
 
-print "1..4\n";
+print "1..8\n";
 
 sub try ($$) {
    print +($_[1] ? "ok" : "not ok"), " $_[0]\n";
@@ -10,3 +10,14 @@ try 1,  13 %  4 ==  1;
 try 2, -13 %  4 ==  3;
 try 3,  13 % -4 == -3;
 try 4, -13 % -4 == -1;
+
+my $limit = 1e6;
+
+# Division (and modulo) of floating point numbers
+# seem to be rather sloppy in Cray.
+$limit = 1e8 if $^O eq 'unicos';
+
+try 5, abs( 13e21 %  4e21 -  1e21) < $limit;
+try 6, abs(-13e21 %  4e21 -  3e21) < $limit;
+try 7, abs( 13e21 % -4e21 - -3e21) < $limit;
+try 8, abs(-13e21 % -4e21 - -1e21) < $limit;