I occasionally want to publish perl modules that require 64-bit integers and "pack 'Q'" support. The modules can be expanded to work on old and 32-bit perls by using BigInt, but I don't want to encumber the main users of the module with that performance hit for such rarely encountered environments. I'm looking for a generic toolkit of functions to solve this, and if it doesn't exist, I'm looking for a good CPAN name to publish mine.

For example, here is the shim I made to support "pack 'Q'" for 32-bit perl and the test I use to usually avoid needing it.

I also want to be able to declare 64-bit constants, for which I created this: (not yet published) 

sub _int64_native {
    $_[0] =~ /^(-?)0x(.*)/? hex($2)*($1? -1 : 1) : 0+$_[0]
}
sub _int64_bigint {
    Math::BigInt->new($_[0])
}
# Can scalars hold 64-bit ints natively?
if ((0x7FFFFFFE << 31) > 0 && (0x7FFFFFFE << 63) == 0) {
    *int64= \&_int64_native;
} else {
    *int64= \&_int64_bigint;
}

[download]

Which I can use like this: 

int64('-0x10000000000');

[download]

Before I go too far here, is there a CPAN module I'm overlooking?

If not, I'd like to make one. What should I name it?

In reply to Supporting 64-bit ints on 32-bit perl by NERDVANA

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