Question

64bits system:

$i=2;print ~$i; # 18446744073709551613

32bits system:

$i=2;print ~$i; # 4294967293

How can I make $i 32 bits?

I need a portable bitwise operation in Perl in any system.

Answer 1

For portable bitwise operations in Perl, check out the Bit::Vector library on CPAN.

It supports a wide range of bitwise operations, for example:

use Bit::Vector;

my $vector = Bit::Vector->new_Dec(32, "2"); # 32-bit vector for the decimal value 2
$vector->Negate($vector);