Maybe you're on a 32-bit build of Perl?

On a 32-bit Perl(v5.20.1, i586-linux-thread-multi) i get:

FFFFFFFF
FFFFFFFF
FFFFFFFF

while on a 64-bit Perl(v5.28.0, x86_64-linux-thread-multi) I also get:

3243BCFE21EF4468
EF453276BDBDE566
2342ED65876AB55F


In reply to Re^2: Rounding off ? by rizzo
in thread Rounding off ? by Zomalaja

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