With Config.pm you could check for d_quad. Another funny way to find the internal integer size is 

perl -E 'say unpack "%b*", pack "j", -1'

[download]

Greetings,
-jo

$gryYup$d0ylprbpriprrYpkJl2xyl~rzg??P~5lp2hyl0p$

In reply to Re: Best way to check for 64-bit support by jo37
in thread Best way to check for 64-bit support by gflohr

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