http://www.perlmonks.org?node_id=435567


in reply to Re^3: Perl oddities
in thread Perl oddities

As someone who has just posted a couple of times about undocumented behavior, I will not protest too loudly about being called on this one. Still, it's a convention that has been relied on and seems unlikely to change.

The obvious fix is:

sub ceil { my $n = shift; int($n) + ($n > int($n) ? 1 : 0); }

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