Re: Large integers

["Kurt D. Starsinic" <kstar@wolfetech.com>]

On Jun 28, Eric Roode wrote:
> Hello all,
> 
>     Can a Perl program tell whether it has 64-bit integers available
> to it, and modify its behavior accordingly?

    These will tell you how big your ints are (and could be):

        perl -V:use64bitint -V:use64bitall
        perl -V:longsize -V:d_longlong -V:longlongsize
        perl -V:ivtype -V:ivsize
        perl -MBit::Vector -e 'print Bit::Vector->Long_Bits'

    These will let you have 64-bit ints in Perl, regardless of your hardware:

        Bit::Vector (for exactly 64 bits)
        Math::BigInt (for at least 64 bits)
        Math::Pari (for anything you can imagine)

    - Kurt

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