Change 14884 by jhi@alpha on 2002/02/26 11:17:42
Cray FP strikes again: things like 1.1 + 0.1 are easily
1.1999999999999996, or thereabouts (yes, even sprintf).
Affected files ...
.... //depot/perl/t/base/num.t#3 edit
Differences ...
==== //depot/perl/t/base/num.t#3 (text) ====
Index: perl/t/base/num.t
--- perl/t/base/num.t.~1~ Tue Feb 26 04:30:06 2002
+++ perl/t/base/num.t Tue Feb 26 04:30:06 2002
@@ -68,20 +68,25 @@
$a = -1.; "$a";
print $a + 1 == 0 ? "ok 19\n" : "not ok 19 #" . $a + 1 . "\n";
+sub ok { # Can't assume too much of floating point numbers.
+ my ($a, $b, $c);
+ abs($a - $b) <= $c;
+}
+
$a = 0.1; "$a";
-print $a + 1 == 1.1 ? "ok 20\n" : "not ok 20 #" . $a + 1 . "\n";
+print ok($a + 1, 1.1, 0.05) ? "ok 20\n" : "not ok 20 #" . $a + 1 . "\n";
$a = -0.1; "$a";
-print $a + 1 == 0.9 ? "ok 21\n" : "not ok 21 #" . $a + 1 . "\n";
+print ok($a + 1, 0.9, 0.05) ? "ok 21\n" : "not ok 21 #" . $a + 1 . "\n";
$a = .1; "$a";
-print $a + 1 == 1.1 ? "ok 22\n" : "not ok 22 #" . $a + 1 . "\n";
+print ok($a + 1, 1.1, 0.005) ? "ok 22\n" : "not ok 22 #" . $a + 1 . "\n";
$a = -.1; "$a";
-print $a + 1 == 0.9 ? "ok 23\n" : "not ok 23 #" . $a + 1 . "\n";
+print ok($a + 1, 0.9, 0.05) ? "ok 23\n" : "not ok 23 #" . $a + 1 . "\n";
$a = 10.01; "$a";
-print $a + 1 == 11.01 ? "ok 24\n" : "not ok 24 #" . $a + 1 . "\n";
+print ok($a + 1, 11.01, 0.005) ? "ok 24\n" : "not ok 24 #" . $a + 1 . "\n";
$a = 1e3; "$a";
print $a + 1 == 1001 ? "ok 25\n" : "not ok 25 #" . $a + 1 . "\n";
End of Patch.
